NEW NORTH AMERICAN SPECIES OF BEES BELONGINGTO THE GENUS HALICTUS (CHLORALICTUS)
.
By Grace Adelbert Sandhouse,of the University of Colorado, Boulder.INTRODUCTION.Since the name Chloralictus was suggested by Robertson in 1902for certain of the metallic-colored Halictine bees, many interesting newspecies have been added to this subgenus. The Rocky MountainStates, with their very diverse habitats, have yielded a majority ofthe species, and still continue to yield many species. Through theefforts of Robertson considerable knowledge of the CMoralicti ofIllinois has been given us, and the Chloralictus fauna of the east-central States seems to be quite like that of Illinois. The numberof species reported from the vSouthern States has been remarkablysmall, a few having been recorded from Florida. In the PacificStates, California has yielded several very interesting species.In the collection of Prof. T. D. A. Cockerell, of the University ofColorado, is a number of Chloralictus?both male and females?fromwidely separated localities. Durmg the last year the writer has beenprivileged to work up this collection under the supervision of Pro-fessor Cockerell. The result has been an unusually large number ofnew species. In very few cases were there representatives of the twosexes from one locality; or, if so represented, the differences betweenthe sexes were so great that it was not considered advisable to at-tempt to match them until further data were obtained. Keys havebeen compiled for all of the species represented in Professor Cock-erell's collection as well as the new species, but it was not found prac-ticable to include in these key species known only from descriptions.KEY TO FEMALES OF HALICTUS (CHLORALICTUS).'Comparatively large, anterior wing at least 6 mm. long; wings somewhat dusky,except in connexus 1Smaller species, usually with paler wings 91. Abdomen blue or green 2Abdomen black 4
' See second paragraph of introduction for statement of species included in this key.No. 2532
?
Proceedings U. S. National Museum. Vol. 65, Art. 19.45554?25?Proc.N.M.vol.65 38 1
2 PROCEEDINGS OF THE NATIONAL, MUSEUM. vol. C5.
2. Mesothorax dark blue, coarsely granular (Costa Rica) sudus Vachal.Mesothorax green 33. Mesothorax shining olive green, with scattered punctures aquilae Cockerel 1
.
Mesothorax brassy green, closely punctured (Colorado). . olivarius, new species.4. Head and thorax dark blue or blue-green 5Head and thorax largely green; no blue tints 65. Mesothorax dullish, with rather close punctures; disk of propodeum withplicae largely confined to the bas.il part (New Mexico) euryceps EllisMesothorax somewhat shining, more sparsely punctured; disk of propodeumrugose (Massachusetts) nigroviridis Graenicher.6. Mesothorax rugoso-punctate (Iowa) bruneri Crawford
.
Mesothorax distinctly punctured 77. Mesothorax with small close punctures; disk of propodeum with somewhatdiscontinuous rugae (Colorado) zophops Ellis.Mesothorax coarsely punctured (Eastern States) 88. Wings clear; disk of propodeum brassy green, crescentic, plicate.connexus Cresson.(Tegulae and wings reddish) subconnexus Ellis.Wings not clear; tegulae dark; disk of propodeum blue, strongly rugose.nymphaearum Robertson.9. Cheeks with a large tubercle below; head large; abdomen with greenishluster (New Mexico) oleosus Cockerell.Cheeks not thus tuberculate 1010. Small species with punctured tegulae 11Tegulae not thus punctured 1511. Wings clear; stigma pale; head and thorax blue-green 12Wings somewhat dusky; head and thorax green, sometimes brassy 1312. Tegulae truncate posteriorly; disk of propodeum with irregularly anasto-mosing rugae (Illinois) tegularis Robertson.Tegulae pointed posteriorly; disk of propodeum granular (New Mexico).tegulariformis Crawford.13. Mesothorax green; disk of propodeum plicate (Massachusetts).ellisiae, new species.Mesothorax often brassy or coppery; disk of propodeum not plicate 1414. Mesothorax brassy with purplish reflections; tegulae strongly punctured ; diskof propodeum long with radiating rugae perparvus Ellis.Mesothorax golden green; disk of propodeum short, gTanular; tegulae deli-cately punctured pseudotegularis Cockerell.Mesothorax very dark olive green; disk of propodeum long, granular; tegulaestrongly punctured (California) helianthi Cockerell.15. Abdomen largely blue or green 16Abdomen red 30Abdomen black or brown 4316. Brilliant steel blue species; ^ving8 somewhat dusky; stigma dark (Illinois).coeruleus Robertson.Not so colored 1717. Wings white, very clear; stigma honey color; pubescence pure white 18Wings not thus clear; stigma darker; pubescence dull or yellowish white 2218. Mesothorax blue, sparsely punctured; abdomen polished, impunctate (NewMexico) semicoeruleus Cockerell.Mesothorax golden or blue-green, more closely punctured; abdomen punc-tured 1919. Head oval; disk of propodeum with discontinuous plicae pruinosus Robertson.Head normal, subcircular 20
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE 320. Apex of flagellum ferruginous; mesothorax opaque, closely punctured; diskof propodeum with irregularly anastomosing rugae (New Mexico).microlepoides Ellis.Flagellum not ferruginous; mesothorax polished, coarsely punctured 2121. Disk of propodeum brilliant blue, rugose pruinosiformis Crawford.Disk of propodeum color of mesothorax, rugulose (Colorado).glaucovirens Cockerell.22. Mesothorax very closely punctured with both coarse and finer punctures; diskof propodeum plicate (California) diversopunctatus Ellis,Mesothorax not thus punctured 2323. Head narrow; orbits almost parallel; flagellum yellow-testaceous beneath(Colorado) pavoninus Ellis.Head normal, subcircular; orbits converging 2424. Tegulae dark; dark blue-green species 25Tegulae light; lighter species 2625. Abdomen obovate; disk of propodeum shining, plicate (Colorado).sedi. new species.Abdomen more slender; disk of propodeum brilliant blue, with irregularlyanastomosing rugae (New Mexico) veganus Cockerell.26. Wings and tegulae reddish; mesothorax opaque, very closely punctured; diskof propodeum granular (Colorado) lazulis Ellis.Wings and tegulae not reddened 2727. Mesothorax polished olive green, delicately pimctured; disk of propodeumlong, plicae confined to basal part (Colorado) academicus, new species.Mesothorax golden green, closely punctured 2828. Head comparatively broad; disk of propodeum granular; pubescence yel-lowish; flagellum yellow-testaceous beneath (California).actinosus, new species.Head normal 2929. (These seem to be very closely related.)Flagellum dusky ferruginous at apex; disk of propodeum microscopicallytessellate between anastomosing rugae (Illinois) pilosus Smith.Species little smaller:Flagellum clear ferruginous at apex; scutellum golden green (Colorado)succinipennis Ellis.Scutellum color of mesothorax; disk of propodeum longer than in the twopreceding species, polished at the apex (Maine).pilosus leucocomus Lovell.30. Abdomen dusky red 31Abdomen clear red or orange-red 3531. Larger, 6-7 mm. long 32Smaller, less than 5 mm. long 3332. Wings faintly dusky; head and thorax olive green, very closely punctured(California) petrellus Cockerell.Wings very clear; head and thorax shining blue-green, more sparsely punc-tured (New Mexico) eophilus Ellis.33. Head and thorax blue-green; flagellum ferruginous, paler beneath.stultus Cresson-Head and thorax olive green; flagellum dark 3434. Abdomen largely dark and submetallic; the light parts orange-ferruginous(Florida) nymphalis Smith.Abdomen chestnut red, a little greenish on middle of third segment (Ne-braska) plctus Crawford.
4 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.35. Head and thorax quite densely clothed with ahort ochraceous hair (East-ern States) vierecki Crawford.Head and thorax not thus clothed 3636. Mesothorax blue, shining, delicately punctured 37Mesothorax green 3837. Face quadrate; disk of propodeum polished, with weak plicae on base only(Arizona) kunzei Cockerell.Face subcircular; disk of propodeum with anastomosing rugae (New Mex-ico) clarissimus Ellis.38. Disk of propodeum shining, plicate, abdomen hoary with yellowish hair(Wisconsin) graenicheri Ellis.Disk of propodeum granular or reticulated 3939. Mesothorax closely punctured 40Mesothorax sparsely or delicately punctured 4140. Head broad; disk of propodeum long, reticulated; flagellum dark (NewMexico) clematisellus Cockerell.Head normal; disk of propodeum short, granular; flagellum testaceous (Colo-rado) hudsoniellus Cockerell.41. Thorax and abdomen hoary with white hair; disk of propodeum short, withcoarsely anastomosing rugae (New Mexico) mesillensis Cockerell.Thorax and abdomen not thus hoary; disk of propodeum long 4242. Larger, about 6 mm. long; flagellum dark, dusky ferruginous at the apex;legs largely dark (Colorado) scrophulariae Cockerell.Smaller, 4.5 mm. long; flagellum yellow-testaceous beneath; legs largelytestaceous (North Dakota) testaceus Robertson.43. Small species, anterior wing about 3 mm. long; often with very clear wings. . 44Larger species 5544. Tegulae dark; wings faintly dusky ? 45Tegulae light; or if tegulae reddened, wings clear 4945. Head and thorax blue 46Head and thorax green 4746. Mesothorax very dark blue, finely and closely punctured; disk of propo-deum semicircular, finely granular (New Mexico).ruidosensis Cockerell, variety.Mesothorax more brilliant blue, more coarsely punctured; disk of propo-deum truncate posteriorly, granular with fine radiating plicae (St. Vincent,W. L) plumbeus Ashmead.47. Disk of propodeum granular; mesothorax opaque (Jamaica) jamaicae Ellis.Disk of propodeum not granular, plicate on basal portion; mesothoraxsomewhat polished 4848. Mesothorax brassy green; disk of propodeum short (Jamaica).liguanensls, new species.Mesothorax not brassy; disk of propodeum longer (Guatemala) deceptor Ellis.49. Wings milky white, or very clear white 50Wings yellowish 5350. Mesothorax opaque, granular; disk of propodeum granular (Virginia).coreopsis Robertson-Mesothorax shining blue, delicately punctured; disk of propodeum notor hardly granular 5151. Head, thorax, and abdomen hoary with white hair; disk of propodeumplicate on base only (New Mexico) pallidellus Ellis.Not thus hoary 52
ABT, 19. AMERICAN BEES OF THE GENUS HALICTUS?SANDHOUSE. 552. Head narrow; fiagellum clear ferruginous; disk of propodeum polished.semibrunneus Cockerell.Head normal; flagellura dark; disk of propodeum faintly granular with fineradiating plicae (Eastern States) sparsus Robertson.Disk of propodeum not granular; mesothorax more coarsely punctured(Western States) sparsus, variety Ellis MSP.53. Mesothorax polished, delicately punctured; disk of propodeum weakly pli-catulate on base only exiguus Smith.Mesothorax opaque; sculpturing of disk of propodeum, not confined to base. . 5454. Mesothorax with sparse shallow punctures; disk of propodeum plicate (Massa-chusetts) admirandus, new species.Mesothorax more closely punctured; disk of propodeum rugose (Nevada).nevadensis Crawford.55. Tegulae dark; wings dusky; stigma dark 56Tegulae light; or if somewhat dark, wings not dusky 6356. Head and thorax brassy or bronze green; abdomen with bronze reflections;disk of propodeum plicate on base only (Guatemala) umbripennis Ellis.Head and thorax not so 5757. Mesothorax polished, sparsely punctured; disk of propodeum with weak pli-cae largely confined to base (Colorado) tenax, new species.Mesothorax opaque, more closely punctured 5858. Mesothorax very closely punctured, giWng a granular appearance; disk ofpropodeum granular, apex polished (Colorado and New Mexico).ruidosensis Cockerell.Mesothorax not so closely punctured; disk of propodeum not granular. 5959. Larger; mesothorax very coarsely punctured; disk of propodeum very sharplytruncated, with coarse plicae (New Jersey) oceanicus Cockerell.Smaller; not so sculptured 6060. Abdomen and legs brown; mandibles red; disk of propodeum with radiatingrugulae (Grenada, W.I.) sanctivincenti Ashmead.Abdomen and legs black; mandibles dark 6161. Fiagellum dusky ferruginous; disk of propodeum short, the plicae not reach-ing the apex, which is polished (Maine) versans Lovell.Fiagellum black; plicae reaching the apex of disk of propodeum, which islonger (Colorado) 6262. Mesothorax with shallow, scattered punctures; apical margins of abdominalsegments testaceous; abdomen narrower at base pacatus, new species.Mesothorax quite closely punctured; apical margins of abdominal segmentsblack; abdomen broad at the base viridatulus Cockerell.63. Wings clear white; pubescence pure white, abundant 64Wings more or less yellowish; pubescence more sparse, dull or yellowish white. . 6764. Mesothorax very coarsely punctured; disk of propodeum with somewhat dis-continuous plicae; abdomen black albipennis Robertson.Mesothorax not so coarsely punctured ; abdomen brown 6565. Smaller; mesothorax blue, delicately punctured; disk of propodeum reticu-lated (New Mexico) alius, new species.Larger; mesothorax golden green, closely punctured; disk of propodeum notreticulated 6666. Disk of propodeum brilliant blue, granular (New Mexico), .perdifficilis Cockerell.Disk of propodeum color of mesothorax, plicate, polished at the apex (Leth-bridgeAlta.) laevissimus Smith.67. Face subquadrate; inner orbits arched above; clypeus and supraclypeal areapolished 68Not so; head narrow or subcircular 69
6 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.68. Meaothorax delicately punctured (Eastern States) hortensis Lovell.Mesothorax coarsely punctured (Western States) crassiceps Ellis.69. Head and thorax rugoso-punctate (See 6) (Iowa and Nebraska) . . bruneri Crawford.Head and thorax with more or less distinct punctures 7070. Head very narrow; flagellum clear ferruginous; mesothorax granular, withshallow punctures; disk of propodeum granular (North Carolina).longiceps Robertson.Not so 7171. Small and slender species; abdomen somewhat bluish; disk of propodeumobscurely sculptured (Colorado) tenuis Ellis.Not so 7272. Mesothorax golden or brassy green 73Mesothorax not so colored 8073. Mesothorax coarsely punctured 74Mesothorax with fine or delicate punctures 7774. Mesothorax with contiguous punctures; disk of propodeum with irregularlyanastomosing rugae (Colorado) perpunctatus Ellis.(Mesothorax not or hardly golden, but with similar punctation to that above;disk of propodeum with rugae not anastomosing (California) (Ellis MSS).perpunctatus, var. californiae ElUs, new variety.'Not so punctured 7575. Tegulae pale; wings clear; disk of propodeum microscopically tessellatebetween rugae; apex of abdomen somewhat greenish (Texas).disparilis Crawford.Tegulae and wings reddened, abdomen entirely black (New Jersey) 7676. Mesothorax polished; disk of propodeum strongly rugose. . .cressonli Robertson.Mesothorax opaque; disk of propodeum plicate cattellae Ellis.77. Small; mesothorax very closely punctured, bronzen; disk of propodeumgranular with radiating plicae (Jamaica) gemmatus Smith.Larger; not so 7878. Disk of propodeum obscurely sculptured; legs and abdomen brown, withyellowish pubescence (Illinois) zephjrrus Smith.Legs and abdomen black; disk of propodeum not so sculptured 7979. Legs entirely black; tegulae reddened; disk of propodeum plicatulate (NewMexico) caducus, new species.Legs not so, with knees red; tegulae pale; disk of propodeum with anasto-mosing rugae ( California) impavidus, new species.80. Mesothorax opaque, closely or coarsely punctured 81Mesothorax shining, delicately or sparsely punctured 8581. Tegulae reddish; mesothorax with coarse punctures; disk of propodeumplicate (Maine) viridatus Lovell.(Mesothorax somewhat brassy, more slender; plicae somewhat wrinkled.viridatus, variety a, new variety).'Tegulae pale; mesothorax finely punctured 8282. Disk of propodeum granular (Florida) 83Disk of propodeum not granular 84
>Mrs. Ellis had the following notes on this variety: '"California specimens of perpunctatus differ in themesothorax being smoother, the punctures being smaller; basal area of the metathorax with the rim alittle sharper in the variety. Two specimens, Pasadena."
'Mrs. Ellis had pointed out this variety, but a nime now preoccupied wis given. The writer haspreferred to designate the variety by a letter only. Mrs. Ellis's notes were as follows: "Variety o ismore slender and has the abdomen more metallic and the margins of the abdominal segments less testa-ceous."
AKT. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 783. Larger; pubescence yellowish; legs brown; abdomen brownish, apical mar-gins of segments broadly testaceous floridanus Robertson.Smaller; pubescence dull white; legs and abdomen black, .ashmeadii Robertson.84. Disk of propodeum shining, microscopically tessellate between discontinu-ous plicae versatus Robertson.Disk of propodeum dull, with irregular, wrinkled rugae (New Mexico).comis, new species.85. Tegulae somewhat reddened (Mountain States) 86Tegulae pale testaceous 8986. Smaller, slender species; plicae confined to base of disk of propodeum 87Larger, robust species; head broad; plicae reaching the apex of the disk ofpropodeum 8887. Disk of propodeum blue, shining, with few plicae meritus, new species.Disk of propodeum green; plicate at sides of disk; somewhat anastomosingrugae on median part of disk arcanus, new species.88. Disk of propodeum crescentic latus, new species.Disk of propodeum longer; plicae weak on median part of disk.phaceliarum Cockerell.89. Mesothorax and scutellum polished, dark, very sparsely punctured; disk ofpropodeum plicate on base only; flagellum ferruginous; mandibles clearred (Guatemala) tropicior Ellis.Not so; mesothorax blue-green, or lighter green 9090. Head broad; robust species; disk of propodeum plicate (Iowa).unicus, new species.Head normal or narrow; more slender species 9191. Abdomen brownish, slender, with quite abundant white hair; disk of propo-deum finely granular with few weak plicae (New Mexico) oblongus Lovell.Abdomen black, broader, first two segments without pubescence 9292. Legs entirely black; disk of propodeum microscopically tessellate betweenrugae 93Knees and tarsi reddened 9493. Abdomen sparsely pubescent (Maine) oblongus planatus Lovell.Abdomen with subappressed hair (Nebraska) politissimus Cockerell.94. Disk of propodeum plicate (Colorado) absimilis, new species.Disk of propodeum weakly rugulose on base only (Iowa).vintonensis, new species.KEY TO MALES OF HALICTUS (CHLOBALICTUS). <Legs entirely red; under side of abdomen red aquilae Cockerell.Legs not entirely red; under side of abdomen not red; or if reddish, then upperside also reddish 11. Thorax and abdomen testaceous bruesi Cockerell.Thorax not testaceous 22. Small species with punctured tegulae 3Tegulae not punctured 63. Mesothorax steel blue; flagellum pale beneath 4Mesothorax dark blue or greenish blue; flagellum little paler beneath 54. Disk of propodeum brilliant blue, crescentic, plicate; flagellum yellow-testaceous beneath (California) gaudialis, new species.Disk of propodeum color of mesothorax, longer, rugose; flagellum chrome-orange beneath (New Mexico) tegulariformis Crawford.
^ See second paragraph of introduction for statement of species included in this key.
8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.
5. Wings faintly reddish; face color of mesothorax (Colorado).paulolus, new species.Wings clear; stigma and nervures testaceous; face olive green (Guatemala).pseudotegularis Cockerell.6. Abdomen blue or green 7Abdomen not blue or green 117. Larger; golden green ; pubescence ochraceous; wings yellowish (Massachusetts ),pilosus Smith.Smaller; blue; pubescence pure white; wings very clear 88. Head broader than long; disk of propodeum with a semicircular inclosing rim.(New Mexico) exalbidus, new species.Head not so; disk of propodeum not so inclosed 99. Hoary with very dense white pubescence; disk of propodeum brilliant blue,plicate pruinosiformis Crawford.Not so 1010. Disk of propodeum with irregularly wrinkled rugae; first recurrent nervurejoining second transverso-cubital (New Mexico) albohirtus CrawfordDisk of propodeum polished, obscurely sculptured; second submarginal cellreceiving first recurrent nervure a little distance from the apex (Colorado).actuarius, new species.11. Abdomen red, suffused with blackish; head and thorax green; disk of pro-podeum plicate (Illinois) zephyrus Smith.Abdomen black or dark brown 1212. Clypeus entirely yellow, or at least the lower half yellow 13Clypeus not yellow, or the anterior margin obscurely yellowish 1813. Head and thorax olive green; flagellum dark (Colorado) sagax, new species.Head and thorax blue-green or blue; flagellum pale beneath 1414. Tegulae very pale; legs largely yellow 15Tegulae dark; legs largely dark 1615. Mesothorax somewhat brassy; abdomen punctured (New Mexico).hyalinus Cra^vfo^d.Mesothorax blue-green; abdomen not punctured (New Mexico).perexiguus, new species.16. Mesothorax delicately punctured; mandibles yellow (Colorado).occultus, new species.Mesothorax closely punctured ; mandibles dark (Colorado) 1717. Head and thorax blue-gi'een; disk of propodeum subcrescentic.evestigatus, new species.Head and thorax blue; disk of propodeum longer, brilliant blue.pikei, new species.18. Tegulae and stigma dark; wings dusky; usually larger species, exceptinsulus and obnubilus 19Tegulae and wings pale; or if tegulae reddened, then wings paler; usuallysmall species, except nymphaearum, connexus, and albipennis 2919. Small species, less than 5 mm. long 20Larger species 2120. Mesothorax blue-green; disk of propodeum plicate (Colorado).obnubilus, new species.Mesothorax blue; disk of propodeum plicate on base only (New Mexico).insulsus, new species.21. Head and thorax brassy olive green; disk of propodeum rugose.oblongus Lovell.Head and thorax blue or green, not brassy 2222. Sculpturing confined to disk of propodeum 23Sculpturing not confined to disk of propodeum 24
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 923. Disk of propodeum plicatulate; apex polished; mesothorax closely punc-tured (Colorado) ruidosensis Cockerell.Disk of propodeum with somewhat wrinkled plicae reaching the apex; meso-thorax more sparsely punctured (Colorado) consonus, new species.24. Mesothorax shining, sparsely or delicately punctured 25Mesothorax opaque, coarsely punctured 2625. Front above the antennae very closely punctured; disk of propodeum rugose( Colorado ) praepes, new species.Front above the antennae without true punctures; apex of disk of propo-deum elevated, tessellate, base weakly plicate (New Mexico).astutus, new species.26. Tegulae and wings reddened; flagellum ferruginous beneath; mesothoraxdark blue; pubescence on mesothorax and vertex yellowish (New Mexico).abundus, new species.Tegulae and wings not reddened; Ilagellum testaceous beneath 2727. Disk of scutellum dull; disk of propodeum dull with irregular rugae (NewMexico) tranquillus, new species.Disk of propodeum shining; disk of scutellum with two polished spots 2828. Mesothorax blue; disk of propodeum plicate (Colorado) pudicus, new species.Mesothorax green; disk of propodeum coarsely rugose viridatus Lovell.29. Large, 7 mm. long; disk of propodeum rugose 30Smaller 3230. Tegulae pale testaceous; mesothorax closely punctured (Texas).counexus Crawford.Tegulae reddened; mesothoiax very coarsely punctured 3131. Wings nailky white; stigma honey color; flagellum yellow-testaceous beneath.albipennis Robertson.Wings not so; flagellum testaceous beneath nymphaearum Robertson.32. Wings milky white; stigma and nervures honey color; mesothorax verycoarsely punctured; disk of propodeum plicate (Colorado).lactineus, new species.Not so 3333. Mesothorax opaque, microscopically tessellate, very closely punctured 34Mesothorax shining, sparsely or delicately punctured 3734. Head and thorax golden green; disk of propodeum plicate (Virginia).callidus, new species.Head and thorax blue or blue-green, not golden 3535. Flagellum clear ferruginous; mandibles yellow; propodeum with discontin-uous plicae (Virginia) apertus, new species.Flagellum testaceous, yellow-testaceous beneath; mandibles dark 3636. Tegulae reddish; diskof propodeum plicate; pubescence of abdomen yellowish(Virginia) genuinus, new species.Tegulae pale testaceous; disk of propodeum rugose; pubescence of abdomennot yellowish versatus, Robertson.37. Mesothorax coarsely punctured 38Mesothorax delicately punctured 4038. Head and thorax brassy green; tip of clypeus and mandibles yellowishvTexas) disparilis Crawford.Head and thorax blue 3939. Disk of propodeum strongly rugose, the rugae not confined to the disk(Connecticut) basilicus, new species.Disk of propodeum brilliant blue, plicae confined to the disk.nevadensis Crawford.
10 PROCEEDINGS OF THE NATIONAL. MUSEUM. voi,. 65.
40. Very small, anterior wing about 3 mm. long 41Larger 4341. Head and thorax brassy green; flagellum black; disk of propodeum withplicae on base only, apex polished (Vera Cruz, Mexico) exiguus Smith.Head and thorax blue; flagellum testaceous beneath 4242. Disk of propodeum deep blue, short, plicate; knees and tarsi yellow(Virginia) hortensis Lovell.Disk of propodeum brilliant blue, longer, with fine, somewhat wrinkledplicae; legs entirely dark (New Mexico) microlepoides Ellis.43. Tegulae somewhat reddened; legs black; mandibles dark 44Tegulae very pale; knees and tarsi red; mandibles red 4544. Flagellum testaceous beneath; face, mesothorax, scutellum and mesopleuraebrassy (Colorado) mactus, new species.Flagellum hardly paler beneath; not thus brassy (Colorado).pensitus, new species.45. (The following are very similar in size, color, punctation, etc.):Third joint of antennae somewhat longer than second 46Third joint of antennae hardly or no longer than second 4746. Disk of propodeum plicate (Colorado) accentus, new species.Disk of propodeum rugose (New Mexico) incompletus Crawford.47. Abdomen entirely black, punctured (Colorado) mollis, new species.Abdomen with piliferous punctures only, apical margins of segmentstestaceous 4848. Mesothorax sparsely and delicately punctured; disk of propodeum plicate(New Mexico) merosus, new species,Mesothorax more closely punctured; disk of propodeum rugose 4949. Disk of propodeum crescentic, with irregularly anastomosing rugae reachingthe apex; legs and abdomen brown (Virginia) malinus, new species.Disk of propodeum long, rugae reaching the apex which is polished; abdomenand legs black (Iowa) insolitus, new species.DESCRIPTIONS OF NEW SPECIES.HALICTUS (CHLORALICTUS) OLIVARIL'S, new species.Female.?About 8.5 mm. long; dark olive green; pubescence pale;facial quadrangle longer than broad; front closely punctured, thepunctures becoming more scattered on the sides of the face; antennaebrown, becoming bright ferruginous at the apex of the flagellum;orbits converging slightly below; clj^peus black, coarsely punctured;supraclypeal area brassy, sparsely punctured. Mesothorax goldengreen, very closely punctured; parapsidal grooves quite indistinct;scutellum closely punctured; disk of propodeum appears rugose, butis covered with finely wrinkled anastomosing rugae making an irreg-ular reticulate surface; truncation well defined laterally; tegulae paletestaceous, impunctate. Abdomen ovate, without distinct hair bands,but with pale pubescence covering the segments; apical margins ofsegments testaceous. Wings yellowish, faintly dusky; anterior wingabout 6 mm. long; stigma and nervures pale testaceous; basal ncrvurevery strongly bent; thh-d submarginal cell strongly contractedabove, more than twice as long as second on marginal; second sub-marginal higher than broad, receiving first recurrent nervure very
AET. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 11
near apex. Legs dark with dull whitish hairs; knees red; tarsisomewhat reddened; hind spui" pectinate with five medium longobtuse spines.Habitat.?Jumbo Keservoir, 9 miles east of Crook, Colorado,August 12, 1921 (Sandhouse). One specimen.Type.?Cat. No. 26399, U.S.N.M.This species seems to be quite distinct and different from anyother Chloralictus known to the writer.HALICTUS (CHLORALICTUS) ELLISIAE. new species.'Female.?About 5 mm. long; head and thorax dark olive green,abdomen black; pubescence dull white, rather sparse. Facial quad-rangle longer than broad; orbits converging slightly below; antennaedark brown; front very closely punctured; sides of face with coarser,deeper, more scattered punctures; supraclypeal area shining, sparselypunctured; lower two-thirds of clypeus black, with a few coarse punc-tures; mandibles black. Mesothorax microscopically lineolate andclosely punctured; scutellum very closely punctured, two smoothspots on the disk; disk of propodeum without a distinct inclosing rim,microscopically reticulate between rugae ; mesopieurae coarsely punc-tured; tegulae dark, punctured; truncation distinct, but not sharplydefined laterally. Abdomen broadly ovate, the only punctures pilifer-ous; segments sparsely clothed with yellowish-white pubescence; apicalmargins of segments brownish, transversely lineolate. Anterior wing3.5 mm, long; wings clear hyaline; stigma and nervures dark testa-ceous; second submarginal cell as broad as high at the base, but con-tracted above, receiving the first recurrent nervure near apex; thirdsubmarginal almost twice as long as second on marginal. Legs darkwith yellowish-white pubescence; inner spur pectinate with fourmoderately long teeth.Habitat.?Forest Hills, Massachusetts, August 5, 1911. Receivedfrom Dr. W. M. Wheeler. One specimen.Type.?Cat. No. 26400, U.S.N.M.Distinct from tegulariformis Crawford, from which it differs by thedarker tegulae and stigma; broader head; darker flagellum; moreclosely punctured mesothorax; more robust species; distinct sculp-turing of disk of propodeum.From tegularis Robertson by the shining head and thorax; darkerwings; tegulae darker, not reddish; darker flagellum; disk of pro-podeum not granular, but with fine plicae.From pseudotegularis Cockerell, which is a very small and slenderspecies, with golden green mesothorax and scutellum, and with diskof propodeum granular.
5 Mrs. Ellis referred this specimen to hr<rlensU Lovell, t)nt the punctured tegulae seem to be distinct.The species was named for Mrs. Ellis.
12 PROCEEDINGS OF THE NATIONAL, MUSEUM. vol.65.From perparvus Ellis, which is very small and dark, with delicatelypunctured tegulae; and has a golden green mesothorax and the diskof the propodeum granular.HALICTUS (CHLORALICTUS) SEDI. new species.Female.?About 6 mm. long; dark greenish blue; pubescence dullwhite, rather sparse. Facial quadrangle longer than broad; sides offace, supraclypeal area, and upper portion of clypeus brassy green;front very closely punctured, the punctures becoming more scatteredbelow; supraclypeal area and upper portion of clypeus with few deeppunctures; lower part of clypeus black, without punctures; flagellumblack, dark testaceous beneath. Mesothorax microscopically tessel-late, with delicate punctures; scutellum closely punctured, two pol-ished spots on the disk; disk of propodeum shining, with fine plicaeon the lateral, and anastomosing rugae on the median portions, pol-ished at the apex; mesopleurae indistinctly punctured; tegulae testa-ceous, impunctate; truncation well defined laterally. Abdomenobovate, polished, very delicately punctured, without distinct hairbands, but segments sparsely covered with hairs; apical margins ofsegments testaceous. Anterior wing about 4.5 mm. long; wings quiteclear; stigma and nervures pale testaceous; second submarginal cellas broad as high, receiving the first recurrent nervure near the apex!almost equidistant with the third submarginal on marginal; subcostalnervure very dark. Legs dark with dull white pubescence; hind spurpectinate with four moderately long teeth.Habitat.?Boulder, Colorado: 1 specimen June 21, on Sedum steno-petalum (Cockerell); 1 specimen May 20 (M. Pope).Type.?Cat. No. 26401, U.S.N.M.Distinguished by the highly polished abdomen,HALICTUS (CHLORALICTUS) ACADEMICUS, new species.Female.?About G mm. long; dark blue-green; pubescence yellowishwhite. Facial quadrangle longer than broad; orbits convergingslightly below; the only punctures on the face piliferous; antennaedark, flagellum ferruginous beneath; clypeus and supraclypeal areasmooth and highly polished, without punctures, flat; lower half ofclypeus black. Mesothorax shining, the only punctures piliferous;disk of propodeum rather long, microscopically tessellate, weaklyplicate on the base only; truncation distinct laterally; tegulae verypale testaceous, impunctate. Abdomen obovate, without distincthair bands, but the segments clothed with rather sparse pubescence;apical margins of segments testaceous. Wings faintly yellowish;anterior wing 4.2 mm. long; stigma and nervures pale testaceous;third submarginal cell subquadrate, a little longer than the second
ART. 19. A.MEKICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 1 3on the marginal; second submarginal higher than broad, receivingthe first recurrent nervure quite near the apex. Legs dark, quitedensely pubescent; knees and tarsi red.Habitat.?Boulder, Colorado, May 14 (Irene Bleasdale).Ty'pe.?Ca.i. No. 26402, U.S.N.M.Differs from lazulis Ellis by the darker color; more weakly punc-tured mesothorax; smooth clypeus and supraclypeal area; sculptur-ing of disk of propodeum distinct.Distinguished by the very delicately punctured mesothorax, andthe clypeus and supraclypeal area very flat and polished,HALICTUS (CHLORALICTUS) ACTINOSUS, new species.Female.?About 5.5-6 mm. long; golden or brassy green; pu-bescence yellowish white. Facial quadrangle about as long as broad;front and vertex very closely punctured, the punctures becomingmore scattered on the sides of the face; supraclypeal area and upperhalf of clypeus shining golden green with a few coarse punctures;lower half of clypeus black; inner orbits converging below; antennaedark, the flagellum rufo-testaceous beneath. Mesothorax microscop-ically lineolate, very closely punctured; scutellum with deep punc-tures, two small polished spots on the disk; disk of propodeumcoarsely granular with rather faint irregular rugae making a reticu-late surface, without an inclosing rim, but polished apically; mes-opleura irregularly punctured; truncation well defined laterally;tegulae very pale testaceous, impunctate. Abdomen obovate,impunctate; the segments clothed with dense pubescence; apicalmargins of segments pale testaceous. Wings faintly yellowish; ante-rior wing 4.5 mm. long; stigma and nervures pale testaceous ; secondsubmarginal cell almost as broad as long, and almost as long as thethird on the marginal; third submarginal gently contracted above,first recurrent nervure joining the second transverso-cubital ; sub-costa very dark. Legs dark with yellowish pubescence.Habitat.?California, labeled No. 846 ; collector and exact localityunknown.Type.?C^i. No. 26403, U.S.N.M.Differs: From vegans Cockerell in having a broader head; palertegulae and wings; head and thorax green; sculpturing of disk ofpropodeum distinct.From jloridanus Robertson by the broader head; clypeus andsupraclypeal area distinctly brassy; paler hairs; head and thoraxgolden green; disk of propodeum not granular.From succinipennis Ellis by the broader head; more closely punc-tured head and thorax; shorter disk of propodeum with distinctsculpturing.
14 PROCEEDINGS OF THE NATIONAX. MUSEUM. tol. Co.HAUCTUS (CHLORALICTUS) LIGUANENSIS, new species.Female.?About 5 mm. long; head and thorax ohve green; abdomenblack; pubescence rather short and dull white. Facial quadranglelonger than broad; orbits converging slightly below; antennae entirelydark, the flagellum hardly paler beneath; face very delicately punc-tured, the punctures more scattered below and on the sides of theface; lower half of clypeus shining black with a few punctures; upperhalf of clypeus and supraclypeal area lineolate and sparsely punctured;mandibles reddish. Mesothorax microscopically lineolate, delicatelypunctured, the punctures more scattered on the disk; median and pa-rapsidal grooves distinct, but not deeply impressed; sculpturing ofscutellum similar to that of the mesothorax, two polished spots onthe disk ; disk of propodeum without an inclosing rim, faintly tessellatewith a few plicae at the base of the area; truncation distinct later-ally; tegulae reddish, impunctate. Abdomen obovate, shining, im-punctate; segments clothed with rather scant pubescence. Wingsfaintly dusky; anterior wing about 3.5 mm. long; stigma andnervuresdark testaceous; second submarginal cell higher than broad, receiv-ing the first recurrent nervure near the apex; third submarginal alittle longer than second on marginal. Legs dark with yellowishhairs; knees and tarsi somewhat reddened.Habitat.?Liguanea Plains, Jamaica, November-December 1911(C. T. Brues).Type.?CU. No. 26404, U.S.N.M.Mrs. ElUs referred this specimen with doubt to jamaicae, but itseems to be distinct.Differs: From jamaicae Ellis by the darker tegulae; disk of pro-podeum not lineolate, and plicate at base only; scutellum with twopolished spots on disk ; face more sparsely punctured.From deceptor Ellis by the broader face; vertex with closer punc-tures; legs not entirely dark; mesothorax more sparsely punctured.HALICTUS (CHLORALICTUS) ADMIRANDUS. new species.Female.?About 5-5.5 mm. long; head and thorax blue-green;abdomen black; pubescence white, rather dense. Facial quadranglelonger than broad; orbits converging below; antennae brown-ferruginous, becoming ferruginous at the apex of the flagellum; facecovered with moderately close haii-s; front closely punctured, thepunctures more sparse on the sides of the face; supraclypeal areaand upper part of the clypeus blue-green, microscopically lineolateand delicately punctured; lower half of clypeus shining black, withfew coarse punctures; mandibles faintly reddish. Thorax quitedensely pubescent; mesothorax dull, microscopically tessellate, withquite close but shallow punctures; punctation of scutellum similarto that of the mesothorax, two punctureless spots on the disk; disk
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS?SANDHOUSE. 15
of propodeum without a distinct inclosing rim, shining, plicae extend-ing across the disk and reaching the apex; truncation clearly definedlaterally; tegulae very pale, impunctate. Abdomen obovate, shining;segments 1-2 rather sparsely pubescent; segments 3-5 clothed withdense, appressed hairs; apical margins of segments testaceous.Wings clear; anterior wing about 3.5 mm. long; stigma andnervures honey color, except the costal nervure which is darktestaceous; second submarginal cell higher than broad, receivingthe first recurrent nervure very near the apex; third submarginallittle longer than second on marginal. Legs dark, covered withwhite hairs; knees and tarsi clear red; hind spur not visible.Habitat.?Woods Hole, Massachusetts (Eleth Cattell).Type ?Cat. No. 26405, U.S.N.M.HALICTUS (CHLORAHCTUS) TENAX, new species.Female.?About 5.5-6 mm. long; head and thorax dark blue-green;abdomen black; pubescence yellowish white, sparse. Facial quad-rangle longer than broad; orbits converging slightly below ; antennaeentirely dark; face shining dark blue; vertex closely punctured;front with a brassy tint, sparsely punctured; supraclypeal areaand upper half of clypeus somewhat brassy, rather closely punc-tured; clypeus shining black below, with few coarse downward-open-ing punctures; apex of mandibles red. Mesothorax shining, micro-scopically lineolate; quite closely punctured, the punctures a lit-tle more scattered on the disk; scutellum closely punctured, twosmooth spots on the disk, each of these spots has two very large punc-tures; disk of propodeum without an inclosing rim, smooth, shining,dark blue, with a few plicae at the base of the disk only; truncationwell defined laterally; tegulae dark testaceous, impunctate. Abdo-men obovate, piceous, impunctate; segments 1-2 almost without hairs;segments 3-5 with sparse white hairs; apical margins of segmentsnarrowly testaceous. Wings faintly dusky; anterior wing 4 mm,long; stigma and nervures testaceous; second submarginal cell higherthan broad, receiving the first recurrent nervure near the apex; thirdsubmarginal about one and one-half times as long as second on mar-ginal. Legs dark with yellowish white pubescence; hind spur pecti-nate with three moderately long teeth; tips of hind basitarsi andapical tarsi reddened.Habitat.?Longs Peak Inn, Colorado, June 25, and August 13(Cockerell). Three specimens.Tyjje.?Cat. No. 26406, U.S.N.M.Differs from viridatulus Cockerell by the shining mesothorax withweak punctures, not lineolate; head, mesothorax, and propodeummore brilliant blue; disk of propodeum without such strong plicae.
16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.HAUCTUS (CHLORALICTUS) PACATUS, new species.Female.?About 6 mm. long; head and thorax dark green; abdomenblack ; pubescence white. Facial quadrangle longer than broad ; orbitsconverging below ; antennae dark, the flagellum scarcely paler beneath;front closely punctured; sides of face with shallow open punctures;supraclypeal area and upper portion of clypeus microscopically lineo-late and coarsely punctured ; lower half of clypeus shining black, withfew coarse punctures. Mesothorax broad, microscopically tessellate,with moderately close, but coarse punctures evenly distributed overthe surface; scutellum finely punctured, two polished spots on the disk;disk of propodeum without a distinct inclosing rim, microscopicallytessellate, with few slightly wrinkled plicae reaching the apex; trun-cation well defined laterally; tegulae dark testaceous, impunctate.Abdomen obovate, impunctate; the first segment almost withouthairs, the other segments sparsely clothed with short hairs. Wingssomewhat dusky; anterior wing about 4.5 mm. long; stigma andnervures testaceous; second submarginal cell slightly higher thanbroad receiving the first recurrent nervure near the apex; third sub-marginal little longer than second on marginal. Legs dark with yel-lowish white hairs; hind spur pectinate with four moderately longteeth.Habitat.?Peaceful Valley, Colorado, 1919 (Cockerell). Two speci-mens.Type.?C&t. No. 26407, U.S.N.M.HALICTUS (CHLORALICTUS) ALIUS, new species.Female.?About 5-5.5 mm. long; head and thorax blue-green;abdomen black; pubescence white. Facial quadrangle somewhatlonger than broad; flagellum rufo-testaceous, paler beneath; frontwith rather close shallow punctures, the punctures deeper and morescattered on the sides of the face; supraclypeal area and upper halfof clypeus delicately punctured ; lower half of clypeus shining black,coarsely punctured; fringed with yellowish hairs; mandibles red.Thorax clothed with rather abundant pubescence; mesothorax shin-ing, with faint microscopic lineolations and rather close, shallowpunctures; punctation of scutellum similar to that of the meso-thorax, two polished spots on the disk; disk of propodeum long,inclosed by a low rim, shining, microscopically tessellate, with faint,very irregularly anastomosing rugae; truncation distinct laterally;tegulae very pale testaceous, impunctate. Abdomen ovate, impunc-tate; segments 1-2 shining, spri'sely pubescent; segments 3-5 clothedwith dense subappressed hairs. Wings very clear; anterior wing4.25 mm. long; stigma and nervures very pale testaceous; secondsubmarginal cell considerably higher than broad, receiving first
ART. 19. A.MEEICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 17
recurrent nervure near the apex; third submarginal subquadrate,little longer than the second on marginal. Legs dark with dull whitehairs; knees, tips of tibiae, and tarsi pale rufo-testaceous; hind spurpectinate with four moderately long teeth.Hahitat.?La Cueva, Organ Mountains, New Mexico, September 2,at flowers of Nuttallia multijlora (Townsend)
.
2Vi>e.?Cat. No. 26408, U.S.N.M.HALICTUS (CHLORALICTUS) CADUCUS, new species.Female.?About 6.5 mm. long; head and thorax dark olive green;abdomen black; pubescence dull white. Facial quadrangle longerthan broad; orbits converging slightly below; face with a bronzereflection, clothed with rather sparse pubescence; antennae dark, theflagellum becoming dark ferruginous at the apex; vertex very closelypunctured; front with more scattered deep punctures; part of clypeusand supraclypeal area bronze green, sparsely punctured; lower half ofclypeus shining black, with a few downward-opening punctures,fringed below with yellowish hairs; mandibles dark, reddish at thetips. Mesothorax brassy green, shining, with faint microsopic tessel-lations and scattered punctures; scutellum brassy green, delicatelypunctured on the anterior part, the punctures coarser posteriorly,two polished spots on the disk; disk of propodeum without a distinctinclosing rim, slightly elevated posteriorly, median portion of diskfinely granular with a few anastomosing rugae, the lateral portionsplicatulate, the plicae extending on to the sides of the propodeum;truncation distinct laterally; tegulae reddish testaceous, impunctatie.Abdomen piceous, obovate; apical margins of segments testaceous;segments 1-2 shining, sparsely pubescent; segments 3-5, with appres-sed, dull white hairs. Wings clear yellowish; anterior wing 4.5 mm.long; stigma and nervures very pale testaceous; second submarginalcell almost as broad as long; first recurrent nervure joining secondtransverso-cubital; third submarginal sharply contracted above,about equidistant with the second on the marginal. Legs dark withdull white pubescence; hind spur pectinate with three teeth.Ha&itoi.?Santa Fe, New Mexico, October 3, at garden marigoldNo. 5620 (Cockerell).Type.?Csit. No. 26409, U.S.N.M.Differs; From versatus Robertson by the reddened tegulae; meso-thorax shining, with more scattered punctures; more slender species;face shining; more sparse pubescence; polished scutellum.From nevadensis Crawford by the larger size; more golden gr(;enface and mesothorax; more sparsely punctured mesothorax; disk ofpropodeum pJicatulate.
18 PKOCEEDINGS OF THE NATIONAL, MUSEUM. vol. 65.HAUCTUS (CHLOHAMCTUS) IMPAVIDIIS, new species.Female.?About 5.5-6 mm. long; head and thorax olive green;abdomen black; pubescence white. Facial quadrangle longer thanbroad; orbits converging below; face covered with rather abundantwhite hairs; front with close but shallow punctures, the puncturesmore scattered on the sides of the face; supraclypeal area and upperhalf of clypeus with a few deep punctures; lower half of cljpeus black,with very few coarse punctures, fringed with yellowish hairs ; antennaedark brown, the flagellum dark ferruginous beneath. Mesothoraxbrassy green, shining, quite closely punctured; scutellum shining, thedisk entirely covered with delicate punctures; disk of propodeumwithout an inclosing rim, the median portion with irregularly anasto-mosing rugae, the sides of the disk plicate: mesopleurae with coarseshallow punctures; truncation well defined laterally; tegulae very paletestaceous, impunctate. Abdomen obovate, impunctate; apical mar-gins of segments testaceous; segments 1-2 sparsely pubescent; seg-ments 3-5, with more abundant white hairs. Wings clear; anteriorwing 4.25 mm. long; stigma and nervures pale testaceous; secondsubmarginal cell broader at the base than it is high, but contractedabove, receiving the first recurrent nervure very near the apex; thirdsubmarginal gently contracted above, about one and one-half times aslong as second on the marginal. Legs dark with yellowish-whitepubescence; knees and tarsi reddened; hind spur pectinate withthree moderately long teeth.FTahitaf.?California, labeled No. 903. Collector and exact local-ity unknown.Type.?C&t. No. 26410, U.S.N.M.HALICTUS (CHLORALICTUS) COMIS, new species.Female.?About 5-5.5 mm. long; head and thorax blue-green; ab-domen black; pubescence white. Facial quadrangle somewhat longerthan broad; orbits converging slightly below; antennae dark reddishbrown, becoming scarcely paler at the apex of the flagellum; faceclothed with moderately dense short white hairs; front very closelypunctured ; supraclypeal area and upper one-third of clypeus micro-scopically tessellate and sparsely punctured; clypeus largely black,shining, with a few coarse punctures, fringed with yellowish hairs;mandibles dark red. Thorax closely covered with rather short whitehairs; mesothorax opaque, microscopically tessellate with rather close,deep punctures; punctation of scutellum similar to that of themesothorax; disk of propodeum crescentic, without an inclosing rim,microscopically tessellate between irregular rugae; truncation welldefined laterally; tegulae pale testaceous, impunctate. Abdomenobovate, impunctate, sparsely pubescent; apical margins of segments
ART. 19. AMEEICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 19brownish testaceous. Wings clear yellowish; anterior wing about4 mm. long; stigma and nervures very pale testaceous; second sub-marginal cell higher than broad, gently contracted above; receivingfirst recurrent nervure very near the apex; third submarginal quitesharply contracted above, little longer than second on marginal.Legs dark brown, with dull white hairs; hind spur pectinate withthree moderately long teeth; apical tarsi somewhat reddened.Hahitat.?Las Cruces (College Farm), New Mexico, on Melilotus,No. 2914 (Cockerell).Type.?Csit. No. 26411, U.vS.N.M.HALICTUS (CHLORALICTUS) MERITUS, new species.Female.?About 5.5 mm. long; head and thorax dark green; abdo-men black; pubescence white, rather sparse. Facial quadrangle some-what longer than broad; orbits converging slightly below; antennaedark, the flagellum hardly paler beneath; face with quite close,shallow punctures; above, the punctures become more dense; supra-clypeal area and upper half of clypeus microscopically Irneolate,sparsely punctured; lower half of clypeus black, very coarsely puns-turcd, fringed with yellowish hairs. Mesothorax shining, microscop-ically lineolate, punctured, the punctures about twace the diameterof a puncture apart; scutellum similarly punctured, with two pointedspots on the disk; disk of propodeum shining dark blue, crescentic,without an inclosing rim, with coarse plicae not reaching the apexwhich is polished; truncation not sharply defined, but distinctlaterally; tegulae red-testaceous, impunctate. Abdomen obovate,shining, impunctate; bases of segments with narrow bands of whiteappressed hair; apical margins of segments dark testaceous. Wingshyaline, faintly iridescent; anterior wing 4.25 mm. long; stigmaand nervures rather pale testaceous; second submarginal higher thanbroad, receiving the first recurrent nervure quite near the apex; thirdsubmarginal very broad at the base, contracted above, about one andone-third times as long as second on the marginal. Legs black withyellowish hairs.Habitat.?Halfway House, Pikes Peak, Colorado, May 30, at flowers.Fragaria (Cockerell).Type.?Cat. No. 26412,U.S.N.M.HALICTUS (CHLORALICTUS) ARCANUS, new species.Female,.?About 6 mm. long; head and thorax blue-green ; abdomenblack; pubescence white. Facial quadrangle longer than broad;orbits converging quite sharply below; face covered with rather sparsepubescence; antennae very dark brown, almost black, hardly palerbeneath ; front closely pimctured ; sides of face with scattered, outwardopening punctures; supraclypeal area and upper half of clypeus with
20 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.a brassy tinge, sparsely punctured; lower half of clypeus blackycoarsely punctured, fringed with yellowish hairs; mandibles red.Thorax clothed with moderately dense white hairs, more abundanton the sides; mesothorax shining, microscopically lineolate, the punc-tures about the diameter of a puncture apart; scutellum microscopi-cally tessellate, opaque, with deep punctures; disk of propodeumcrescentic, polished posteriorly, rugae almost parallel on the lateralportions of disk, anastomosing medially; truncation not sharply definedbut distinct laterally; tegulae red-testaceous, impunctate. Abdomen,obovate, impunctate, without distinct hair bands, but segments cov-ered with white subappressed hairs; first abdominal segment punc-tured on the median portion, the second segment punctured on thebase; segments 1-2 sparsely pubescent. Wings clear; anterior wing4.5 mm. long; stigma and nervures pale testaceous; second submar-ginal cell higher than broad, receiving the first recurrent nervure nearthe apex; third submarginal rather gently contracted above, aboutone and one-half times as long as second on marginal. Legs blackv/ith dull white hairs; hind spur pectinate with four moderatelylong teeth.Habitat.?White Mountains, New Mexico, July 20, on flowers, Ver-hascum thapsus (C. H. T. Townsend).Type?C&t. No. 26413, U.S.N.M.HALICTUS (CHLORALICTUS) LATUS, new species.Female.?About 6.5-7 mm. long; head and thorax dark olive green;abdomen black; pubescence yellowish white. Facial quadrangle aboutas broad as long; orbits converging shghtly below; face clothedwith moderately dense pubescence; front closely punctured, thepunctures more scattered and indistinct below the antennae; sup-raclypeal area microscopically lineolate, with few deep punctures;clypeus produced little below the lower margins of the eyes, lowerhalf shining black, with few coarse punctures, fringed with yellow-ish hairs. Thorax clothed with moderately abundant yellowish whitehairs; mesothorax broad, shining, microscopically tessellate, withscattered shallow punctures; median and parapsidal grooves deeplyimpressed; scutellum closely and coarsely punctured, two polishedspots on the disk; disk of propodeum crescentic, without an in-closing rim, shining, with coarse plicae extending to the posteriormargin, median portion of disk slightly elevated posteriorly, and tes-sellate; truncation distinct laterally; tegulae rufo-testaceous, impunc-tate. Abdomen obovate, impunctate; segments 1-2 almost withoutpubescence, shining; segments 3-5 covered with subappressed yellow-ish hairs. Anterior wing about 5 mm. long; wings hyaline; stigmaand nervures pale testaceous; second submarginal cell higher thanbroad, receiving the first recurrent nervure very near the apex; third
AET. 19. AMEEICAN BEES OF THE GENUS HALICTUS?SANDHOUSE. 21submarginal sharply contracted above and little longer than secondon the marginal. Legs black, with quite abundant yellowish hairs;hind spur pectinate with three moderately long teeth.Habitat.?Colorado Springs, Colorado, April 20, at flowers of willow{W. P. Cockerell).Type.?Cat. No. 26414, U.S.N.M.Distinguished from other CMoralictus by the broad head; and fromunicus by the reddish tegulae, olive-green mesothorax, hind spur withthree teeth, darker stigma and nervures.HALICTUS (CHLOKALICTUS) UNICUS. new species.Female.?About 6,5 mm, long; head and thorax dark blue-green;abdomen black; pubescence largely dull white. Facial quadrangleabout as broad as long; orbits converging below; face covered withmoderately dense pubescence; front with close shallow punctures;sides of face and supraclypeal area microscopically lineolate, with deepscattered punctures; clypeus largely shining black, with few verycoarse punctures, fringed with yellowish hairs; antennae dark, flagel-lum reddened beneath, especially apically. Thorax clothed withabundant white pubescence; mesothorax broad, microscopically line-olate, with coarse scattered punctures; scutellum sculptured similarlyto the mesothorax, two large polished spots on the disk; disk of pro-podeum crescentic, without an inclosing rim, with few coarse plicae,plicae somewhat wrinkled, especially on the median portion; trun-cation distinct laterally; tegulae pale testaceous, impunctate. Ab-domen broadly obovate, impunctate; first abdominal segment as broadas second; segments 1-2 shining, almost without pubescence; seg-ments 3-5 clothed with dense subappressed yellowish white hairs.Anterior wing 5 mm. long; wings clear; stigma and nervures honeycolor; second submarginal cell higher than broad, scarcely contractedabove, receiving the first recurrent nervure very near the apex; thirdsubmarginal very gently contracted above, about twice as long assecond on marginal. Legs black, with dense dull white hans; hindspur pectinate with four moderately long teeth.Habitat.?Seven miles east of Vinton, Iowa, June 29, 1922 (Sand-house),TVpe,?Cat. No. 26415, U,S,N,M,Easily distinguished from other CMoralictus by the broad head, andfrom latus by the paler tegulae and nervures; blue-green mesothorax;hind spur with four teeth.HALICTUS (CHLORALICTUS) ABSIMILIS, new species.Female.?About 6 mm, long; head and thorax blue- green; abdomenblack; pubescence white. Facial quadrangle longer than broad;inner orbits converging below; front above the antennae with close
22 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.
shallow punctures; sides of face, part of the clypeus and supracly-peal area microscopically lineolate, more sparsely punctured; lowerpart of clypeus black, shinin?, with a few coarse punctures; flaeellumdark testaceous, paler beneath and at the apex. Thorax quite denselypubescent; mesothorax shining, microscopically lineolate, with mod-erately close, shallow punctures, the punctures closer at the extremeposterior and lateral margins; punctation of scutellum similar tothat of the mesothorax, two large polished spots on the disk; disk ofpropodeum rather long, without a distinct inclosing rim, microscopi-cally tessellate, with more or less discontinuous plicae; truncationdistinct laterally; tegulae very pale testaceous, impunctate. Abdo-men obovate, shining, impunctate; segments 1-2 with sparse dullwhite pubescence; segments 3-5 densely clothed with subappresseddull white hairs; apical margins of segments 3-4 testaceous. Ante-rior wing 4.5 mm. long; wings hyaline; stigma and nervures paletestaceous; second submarginal cell higher than broad, receiving thefirst recurrent nervure near the apex; third submarginal subquad-rate, gently contracted above, httle longer than the second on mar-ginal. Legs dark, with dull white hairs; knees and tarsi dark red;hind spur pectinate with four moderately long teeth.Habitat.?Sterling, Colorado, July 10, 1920, on dandelion {Taraxa-cum) (Sandhouse)Type.?C&t. No. 26416, U.S.N.M.HALICTUS (CHLOBALICTUS) VINTONENSIS, new species.Female.?About 5 mm. long; head and thorax olive green; abdomenblack; pubescence dull or yellowish white. Facial quadrangle dis-tinctly longer than broad; inner orbits converging gently below; faceshining, clothed with quite abundant pubescence, rather closely anddelicately punctured; supraclypeal area sparsely punctured; clypeuslargely green, sparsely punctured, black below, fringed with yellowishhairs; antennae largely dark, flagellum dark testaceous beneath;mandibles red. Thorax shining with quite abundant pubescence;mesothorax smooth, with very delicate punctures; scutellum withdisk largely polished, dull and delicately punctured at posterior mar-gin; disk of propodeum long, without a distinct inclosing rim, micro-scopically tessellate, with irregular rugae on basal portion only;truncation distinct laterally; tegulae very pale testaceous, impunctate.Abdomen ovate, shining, quite sparsely pubescent, impunctate;apical half of segments 1-2 with bronzen reflections; anterior wing4.2 mm, long; wings hyaline; stigma and nervures pale testaceous;subcostal nervure very dark; second submarginal cell higher thanbroad, receiving the first recurrent nervure very near the apex; thirdsubmarginal hardly contracted above, almost twice as long as second
ART. ID. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 23on the marginal. Legs black, covered with dense yellowish pubes-cence; knees and tarsi clear red; hind spur pectinate with four mod-erately long teeth.Habitat.?Vinton, Iowa, June 23, 1922 (Sandhouse). Two speci-mens.Type.?Co-t. No. 26417, U.S.N.M.HALICTUS (CHLORALICTUS) GAUDIALIS, new species.Male.?About 4.5 mm. long; head and thorax brilliant blue; abdo-men black; pubescence pure white. Face clothed with dense pubes-cence; facial quadrangle longer than broad; inner orbits convergingsharply below; antennae dark brown, flagellum yellow-testaceousbeneath, second and third antennal joints of equal length; front closelypunctured, the punctures becoming hardly more scattered belowantennae and on supraclypeal area; clypeus largely black, producedabout two-thirds its length below the eyes, coarsely punctured.Thorax slender, with moderately dense pubescence; mesothorax shin-ing, coarsely and closely punctured; scutellum and metathorax closelypunctured; disk of propodeum cresccntic, shining, with a low inclos-ing rim posteriorly, plicae radiating slightly, reaching the apex;mesopleurae coarsely punctured; sides of propodeum punctured; trun-cation distinct, but not sharply defined laterally; tegulae dark, opaque,with close and deep punctures. Abdomen ovate, black, bases of seg-ments clothed with fine white hairs, delicately punctured; apicalmargins of segments polished. Wings clear; anterior wing 3.5 mm.long; stigma and nervures testaceous; second submarginal cell twiceas high as broad, leceiving the first recurrent nervure very near theapex; third submarginal broad at the base, contracted about one-halfabove, almost twice as long as second on the marginal. Legs black,or very dark brown; tarsi paler brown; pubescence moderately dense.Habitat.?La Jolla, California, August (Cockerell) . Two specimens.Type.?Q&t. No. 26418, U.S.N.M.HALICTUS ( CHLORALICTUS ) PAULULUS. new speceis.Male.?About 4 mm. long; head and thorax greenish blue; abdo-men black; pubescence white. Facial quadrangle distinctly longerthan broad; orbits converging sharjjly below; face clothed withdense white hairs; flagellum brown, rufo-testaceous beneath, secondand third antennal joints of equal length; front very closely punc-tured above the antennae, the punctures more scattered below; clypeuslargely black, coarsely punctured. Thorax clothed with moderatelyabundant pubescence, the hairs longeron the sides; mesothorax shin-ing, with close, coarse punctures, the punctures about the diameter
24 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.
of a puncture apart; median and parapsidal grooves indistinct; punc-tation of scutellum similar to that of the mesothorax; disk of pro-podeum crescentic, dull, finely roughened, rugose at the base only;mesopleurae punctate; truncation distinct laterally; tegulae dark,opaque, coarsely punctured. Abdomen ovate; without distinct hairbands, but segments clothed with quite sparse dull white hairs; apicalmargins of segments polished, dark testaceous. Wings yellowish;anterior wing 2.75 mm. long; stigma and nervures pale testaceous;second submarginal cell higher than broad, receiving the first recur-rent nervure near the apex; third submarginal about one and one-halftimes as long as the second on the marginal. Legs black, withrather sparse pubescence ; tarsi reddish.Habitat.?Crook, Colorado, August 29, 1920 (Sandhouse).Type.?Cat. No. 2G419, U.S.N.M.HALICTUS ( CHLORALICTUS) EXALBIDUS. new species.Male.?About 5 mm. long; brilliant blue; pubescence pruinose,abundant. Facial quadrangle about as broad as long; face withlong plumose hairs; orbits converging below; second and thirdantennal joints of equal length, flagellum rufo-testaceous, palerbeneath; front with close, deep punctures above the antennae, moresparse below; supraclypeal area and clypeus largely blue, more deli-cately punctured; the line between the clypeus and supraclypeal areavery faint. Mesothorax shining, coarsely punctured; median andparapsidal grooves distinct, but not deeply impressed; punctation ofscutellum similar to that of the mesothorax; metathorax shining,punctate; disk of propodeum small, semicircular, with a polishedinclosing rim, sliining, with irregularly Avrinkled rugae; mesopleuraecoarsely punctured; sides of propodeum punctured, the puncturesextending up to the edge of the disk; truncation distinct laterally,but not sharply defined; tegulae very clear, honey color, impunctate.Abdomen narrowly ovate, segments punctured to the extreme apicalmargins, which are testaceous. Wings clear; anterior wing 3.5 mm.long; stigma and nervures honey color, except the subcosta and thecosta beyond the stigma, which are testaceous; second submarginalcell higher than broad; first recurrent nervure joining second trans-verso-cubital; third submarginal somewhat broader than high, gentlycontracted above, about three times as long as second on the mar-ginal. Legs dark, with knees reddened; tarsi testaceous.HaUtat.?SantG Fe, New Mexico, August, No. 4228 (Cockerell).Type.?Csit. No. 26420, U.S.N .m'.Differs from alboJiirtus Crawford'^b}^ the more closely punctm*edmesothorax; sculptm'ing of the disk][of propodeum; broader head.From pruinosiformis Crawford by the reddened flagellum; moresparse pubescence; broader head.
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 25HAUCTUS (CHLORALICTUS) ACTUARIUS, new species.3Iale.?About 4.5 mm. long; brilliant blue; pubescence white,sparse. Facial quadrangle distinctly longer than broad; orbits con-verging sUghtly below; flagellum testaceous, yellow testaceous be-neath; second and third joints of antennae of equal length; frontshining, with close, rather delicate punctures above antennae; punc-tures below and on the supraclypeal area and clypeus delicate, butmore scattered; clypeus largely blue; mandibles dark reddish. Meso-thorax shining, coarsely punctured, the punctures about twice thediameter of a puncture apart; punctation of the scutellum similarto that of the mesothorax; metathorax punctured; disk of propodeumlong, shining, without an inclosing rim, plicate laterally, mediallywith irregularly anastomosing rugae; pleurae and sides of propodeumcoarsely punctured; truncation distinct laterally; tegulae honey color,impunctate. Abdomen narrowly ovate, punctured, very sparselypubescent; apical margins of segments testaceous; margins of seg-ments 1-2 punctured, of segments 3-5 punctureless. Wings veryclear; anterior wing about 3.25 mm. long; stigma and nervures honeycolor, except the subcostal nervure which is testaceous; second sub-marginal cell higher than broad, receiving the first recurrent nervurenear the apex; third submarginal practically quadrate, little con-tracted above, more than twice as long as second on the marginal.Legs largely black; knees red; tarsi yellow-testaceous.Hahitat? Boulder, Colorado, July 31, 1908 (S. A. Rohwer).Type.?C&t. No. 26421, U.S.N.M.Differs: From alhohirtus Crawford by the narrower thorax; lessabundant pubescence; sculpturing on the disk of propodeum.From pruinosiformis Crawford by the sparse pubescence; moreslender abdomen; sculpturing and color of the disk of propodeum.HALICTUS (CHLORALICTUS) SAGAX, new species.Male.?About 5.5-6 mm. long; head and thorax olive green; abdo-men black; pubescence white. Facial quadrangle longer than broad
;
inner orbits converging sharply below; face brassy, clothed withdense hairs; flagellum brown, paler beneath; third antennal jointlonger than second; front above the antennae sparsely pubescent,very closely punctured, below the antennae so closely covered withplumose hairs that no punctures are apparent; lower half of clypeusandjtips of mandibles reddish yellow. Thorax with sparse pubescence;mesothorax and scutellum sliining brassy green, smooth, coarselypunctured, the punctures much closer in the region of the medianand parapsidal grooves; disk of propodeum shining dark green, withvery coarse rugae extending to the posterior margin, thence over thelateral [sides and covering the entire posterior surface; truncation45554?25?Proc.N.M.vol.65 39
26 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.
very sharply defined; tegulae pale testaceous, impunctate. Abdomenovate, shining, sparsely pubescent, with delicate pihferous punctureson the bases of segments; apical margins of segments narrowly tes-taceous. Wings hyaline, faintly dusky; anterior wing 4 mm. long;stigma and nervures testaceous; subcostal nervure dark; second sub-marginal cell higher than broad, contracted above; first recurrentnervure joining the second transverso-cubital; third submarginal nar-row?that is, higher than broad?about twice as long as the secondon the marginal. Legs black with knees, tips of tibiae and tarsirufo-testaceous; pubescence pure white.Habitat.?Boulder, Colorado, July 28, and September 12, 1908(S. A. Rohwer). Two specimens.Type.?Cat. No. 26422, U.S.N.M.Quite similar to disparilis Cra^^^ord, from which it differs by themore sharply converging orbits; yellow clypeus; shape and sculp-turing of the disk of the propodeum,HALICTUS (CHLORALICTUS) PEREXIGUUS, new species.Male.?Ahont 5 mm. long; head and thorax greenish blue; abdo-men brown; pubescence white. Facial quadrangle longer thanbroad; orbits converging sharply below; eyes bulging, giving theface a circular appearance; antennae rufo-testaceous; second andthird joints of antennae of equal length; flagellum yellow-testaceousbeneath; front covered with appressed white hairs, above theantennae very closely punctured, below the punctures become moresparse; lower half of clypeus and mandibles yellow; clypeus pro-duced little below the lower margin of the eyes. Thorax withmoderately dense pubescence; mesothorax shining, with delicate,moderately close punctures; median and parapsidal grooves distinct,but not deeply impressed; scutellum and metathorax shining, deli-cately punctured; disk of propodeum long, shining, with irregularrugae not reaching the apex, which is polished; mesopleurae shining,dehcately punctured; truncation not sharply defined, but distinctlaterally; tegulae very pale, impunctate. Abdomen slender, theonly punctures piliferous; bases of segments clothed with rathersparse hairs; apical margins very pale testaceous. Wings clear;anterior wing 4 mm. long; stigma and nervures testaceous; secondsubmarginal cell higher than broad, receiving the first recurrentnervure near the apex; third submarginal little broader than high,contracted above, about equidistant with the second on the marginal.Legs yellow-testaceous; the femora and tibiae somewhat darker;pubescence dull white.Habitat.?Las Cruces, New Mexico, October 12 (Cockerell).Type.?Cat. No. 26423,U.S.N.M.
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 27HALICTUS (CHLORALICTUS) OCCULTUS, new speclea.Male.?About 6.5 mm. long; head olive green; thorax largely blue-green; abdomen black; pubescence white. Facial quadrangle dis-tinctly longer than broad; orbits converging sharply below; frontabove the antennae without hairs, very closely punctured, below theantennae the punctures are more scattered and the pubescence isdense; supraclypeal area opaque, microscopically lineolate, sparselypunctured; lower half of clypeus and mandibles very pale yellow;antennae dark testaceous, flagellum testaceous beneath; second andthird antennal joints of equal length. Thorax with moderately densepubescence; mesothorax shining, with delicate punctures, the diskblue, the lateral and posterior margins blue-green; punctation of scu-tellum similar to that of the mesothorax; disk of propodeum shiningblue, laterally with a few coarse plicae which extend over on the sides;the median portion is irregularly rugose; truncation distinct laterally;tegulae dark, impunctate. Abdomen slender, impunctate, sparselypubescent; the apical margins of the segments testaceous, A\'ith micro-scopic transverse lineolations. Wings clear hyaline; anterior wing 5mm. long; stigma and nervures testaceous; second submarginal cellhigher than broad, receiving the first recurrent nervure near the apex;third submarginal little broader than high, about one and one-halftimes as long as the second on the marginal. Legs black; knees,apices of tibiae and tarsi j^ellow; the front legs with tibiae entirelyyellow; pubescence on legs short, pure white.Habitat.?Florissant, Colorado, July 23, at flowers Potentilla(Cockerell).Type.?Cat. No. 26424, U.S.N.M.Differs: From Tiortensis Lovell by the larger size; brassy face andmesothorax; clear wings; legs black; narrower face.From nevadensis Crawford by the narrower, brassy face; palerflagellum; brassy mesothorax and scutellum; clear wings; sculpturingon disk of propodeum.HALICTUS (CHLORALICTUS) EVESTIGATUS, new species.Male.?About 6-6.5 mm. long; head and thorax blue-green; abdo-men black; pubescence white. Facial quadrangle somewhat longerthan broad; orbits converging slightly below; antennae dark brown,third joint longer than the second; flagellum yellow-testaceoi'sbeneath; front above antennae with close, shallow punctures, belowsparsely punctured and clothed with dense pubescence; the lower halfof the clypeus pale yellow; mandibles dark, red at the apex. Thoraxwith moderately dense short hairs; mesothorax and scutellum shining,with coarse punctm*es, the punctures hardly the diameter of a punc-ture apart; disk of propodeimi long, shining, without an inclosing rim,
28 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.emarginate posteriorly, with irregularly anastomosing rugae; trunca-tion distinct laterally; tegulae dark, impunctate. Abdomen ovate,shining piceous, sparsely pubescent; the bases of the segments punc-tate; the apical margins testaceous with microscopic, transverse line-olations. Wings hyaline; anterior wing 4.5 mm. long; stigma andnervures dark testaceous; second submarginal cell higher than broad,receiving the first recurrent nervure one-third of the distance fromthe apex; third submarginal broad, sharply contracted above, aboutone and one-half times as long as the second on marginal. Legs black
;
sparsely pubescent; tarsi yellow.Habitat.?Ward, Colorado, August 10 (Cockerell).Ty2)e.?Cat. No. 2G425, U.S.N.M.HALICTUS (CHLORALICTUS) PIKEI, new species.Male.?About 7 mm. long; head and thorax brilliant dark blue;abdomen black; pubescence white. Facial quadrangle considerablylonger than broad; orbits converging slightly below; antennae darktestaceous, the third joint longer than the second; flagellum yellow-testaceous beneath; face shining, sparsely pubescent; front above theantennae closely punctured, the punctures becoming more sparsebelow; lower half of clypeus pale yellow; mandibles dark, reddish atthe apex. Thorax with short hairs; mesothorax shining, the diskrather coarsely punctured, the punctures about the diameter of apuncture apart; outside the disk, the punctures are more delicate;scutellum greenish blue, shining, delicately punctured; disk of pro-podeum long, without a distinct inclosing rim, with very irregularrugae extending to the apex; mesopleurae shining, with shallowpunctures; truncation distinct laterally; tegulae dark, impunctate.Abdomen ovate, shining, sparsely pubescent; the only puncturespiliferous; the bases of the segments 4-5 with a bluish reflection;apical margins of segments brownish. Wings clear hyaline; anteriorwing 4.75 mm. long; stigma and nervures dark testaceous; basalnervure strongly bent; second submarginal cell higher than broad,receiving the first recurrent nervure very near the apex; third sub-marginal about t\vice as long as the second on the marginal. Legsblack, with dull white hairs; knees red; tarsi yellow.Hahitat.?Ynnting OfTice, Pikes Peak, Colorado, September 17(Cockerell).Type.?Cut. No. 26426, U.S.N.M.HALICTUS (CHLORALICTUS) OBNUBILUS, new species.Male.?About 4 mm. long; head and thorax dark blue-green;abdomen black; pubescence white, sparse. Facial quadrangle longerthan broad; orbits converging sharply below; antennae dark, secondand third joints of equal length; flagellum dark brown, hardly paler
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 29beneath; front above the antennae closely punctured; below theantennae, the supraclypeal area and clypeus with sparse deep punc-tures; lower half of clypeus black. Mesothorax shining, greenish,with faint microscopic lineolations; outside the disk, the puncturesare about the diameter of a puncture apart, on the disk, twice as farapart; scutellum and metathorax shining, punctured; disk of propo-deum crescentic, with a low, polished, inclosing rim, shining, withplicae extending to the posterior margin; mesopleurae shining, coarselypunctured; sides of propodeum delicately punctured; truncation dis-tinct laterally; tegulae dark; impunctate. Abdomen slender, shin-ing, the segments delicately punctured, except the apical margins ofthe segments which are polished; sparsely pubescent. Wings faintlydusky; anterior wing 2.5 mm. long; stigma and nervures dark; secondsubmarginal cell higher than broad; contracted above; first recurrentnervure joining the second transverso-cubital; third submarginalvery broad, contracted about one-half above, little longer than secondon the marginal. Legs black.Habitat.?Boulder, Colorado, July 18, 1908 (S. A. Rohwer).Type.?Qs.t. No. 26427, U.S.N.M.Differs : From ruidosennsis Cockerell by the smaller size : plicae onthe disk of propodeum reaching the posterior margin; mesothoraxbrassy; paler color,HALICTVS (CHLORALICTUS) INSULSUS. new species.Male.?About 5 mm. long; head and thorax dark blue; abdomenblack; pubescence white, sparse. Facial quadrangle about as broadas long; orbits converging below; antennae dark brown, the secondand third joints of equal length; flagellum little paler beneath; frontabove the antennae very closely punctured; the lower portion of thefront, supraclypeal area and clypeus more sparsely punctured; cly-peus black, produced more than half its length below the lower mar-gins of the eyes. Mesothorax and scutellum with moderately coarse,shallow punctures, about the diameter of a puncture apart; disk ofpropodeum without an inclosing rim, plicatulate at the base only,the apex is polished; mesopleurae with shallow punctures; sides ofpropodeum punctured; truncation not sharply defined, but distinctlaterally; tegulae dark, impunctate. Abdomen slender, the only punc-tures piliferous; the apical margins of segments brownish. Wingsfaintly dusky; anterior wing 4 mm. long; stigma and nervures dark;the second submarginal cell as broad at the base as it is high, butcontracted almost one-half above, receiving the first recurrent nervurevery near the apex; third submarginal about twice as long as thesecond on marginal. Legs black.Habitat.?Beulah, New Mexico, August 18 (W. Porter).Type.?C&t. No. 26428, U.S.N.M.
30 PBOCEEDINGS OF THE NATIONAL MUSEUM. vol.65.HALICTUS (CHLORALICTUS) CONSONUS, new species.Male.?About G.o-7 mm. long; head and thorax very dark blue-green; abdomen black; pubescence white. Facial quadrangle some-what longer than broad; inner orbits converging sharply below;antennae black, second and third joints of about equal length; fla-gellum dark testaceous beneath; front above the antennae very closelypunctured, the punctures becoming more open and sparse below;supraclypeal area and clypeus microscopically lineolate, sparselypunctured; clypeus black; mandibles black, slightly reddened api-cally. Thorax with short, rather dense pubescence; mesothoraxmicroscopically tessellate, quite closely pimctured, the puncturesmore sparse on the disk; scutellum punctured; disk of propodeumlong, shining, with plicae on the sides, the median portion with irreg-ularly anastomosing rugae, apex polished; truncation distinct later-ally; tegulae dark, impunctate. Abdomen shining, sparsely pubes-cent, narrowly ovate; segments with transverse linoolations; the onlypunctures piliferous; apical margins of segments polished. Wingsfaintly dusky; anterior wing 5 mm. long; stigma and nervures dark;second submarginal cell as broad as high, contracted slightly abore,receiving the first recurrent nervure near the apex; third submarginalhigher than broad, hardly contracted above, about one and one-halftimes as long as the second on marginal. Legs black, with dull whitepubescence, except on the tarsi where it is yellowish.Habitat.?Colcbrook, Connecticut, September 1-7 (W. M. Wiieeler).Type.?Ca.t. No. 26429, U.S.N.M.Differs : From ruidosensis Cockerell by the shape and sculpturing ofthe disk of propodeum; impunctate abdomen ; flagellum paler beneath.From mridatus Lovell by the darker thorax; more closely punc-tured mesothorax; sculpturing of disk of propodeum.HALICTUS (CHLORALICTUS) PRAEPES, new species.Male.?About 6.5-7 mm. long; head and thorax dark greenishblue; abdomen shining black ; pubescence white, rather sparse. Facialquadrangle longer than broad; orbits converging sharply below;antennae dark brown, third joint longer than second; flagellum tes-taceous beneath; front above the antennae very closely punctured;below, with more scattered, shallow punctures, and covered withdense pubescence ; lower portion of clypeus black ; clypeus and sup-raclypeal area without distinct punctures. Mesothorax shining, rathersparsely punctured; scutellum distinctly rounded upward, shining,almost without punctures; dish of propodeum slightly elevated pos-teriorly, shining, with few rugae extending across the disk and on tothe sides of the propodeum, faint reticulations between the rugae;truncation distinctly laterally, but not sharply defined; sides ofpropodeum rugose; tegulae dark, impunctate. Abdomen slenderly
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE, 31
ovate, shining, impunctate, almost without pubescence; apical marginsof segments dark testaceous. Wings quite clear; anterior wingabout 4.5 mm. long; stigma and nervures dark testaceous; basalnervure very gently arched; second submarginal cell higher thanbroad, receiving the first recurrent nervure near the apex; third sub-marginal not contracted above, about twice as long as the second onmarginal. Legs black.Habitat.?Vesiceiul Valley, Colorado, 1919 (Cockerell).Type.?Cat. No. 26430, U.S.N.M.Differs: From ruidosensis Cockerell by the shining, more sparselypunctured mesothorax and scutellum; sculpturing of the disk ofpropodeum; polished abdomen.From viridatus Lovell by the shining blue head and thorax; moresparsely and delicately punctured mesothorax; impunctate abdomen.HALICTUS (CHLORAUCTUS) ASTUTUS,new species.Male.?About 7 mm. long; head and thorax largely dark blue-green;abdomen black; pubescence dull white. Facial quadrangle distinctlylonger than broad; orbits converging below; face clothed with rathersparse, dull white hairs; front above the antennae without punctures,but rough, giving it a dull appearance; below the antennae, it is sparselypunctured; supraclypeal area and upper half of clypeus microscopicallytessellate, sparsely punctured; antennae dark, third joint scarcelylonger than the second; flagellum rufo-testaceous beneath. Thoraxwith moderately dense, long hairs; mesothorax smooth, shining, sparselyand coarsely punctured; scutellum duller, but with similar punc-tation, two smooth spots on the disk; disk of propodeum crescentic, in-closed by a rim posteriorly, with coarse rugae not quite reaching theapex, which is microscopically tessellate, but the rugae extend over thelateral margins of the disk; upper half of lateral sides and posteriorside of propodeum coarsely rugose: truncation clearly defined latter-ally; tegulae dark, impunctate. Abdomen narrowly ovate, impunc-tate; apical margins of segments polished and narrowly testaceous;the bases of the segments covered with sparse pubescence. Wingshyaline; anterior wing 5 mm. long; stigma and nervures dark; secondsubmarginal cell higher than broad, contracted above, receiving thefirst recurrent nervure very near the apex; third submarginal higherthan broad, hardly contracted above, twice as long as the second onmarginal. Legs black, with yellowish white pubescence; tarsi some-what reddened.Habitat.?Beulah, New Mexico, August 18 (W. Porter).Type.?Cat. No. 26431, U.S.N.M.Differs: From ruidosensis Cockerell by the shining, more sparselypunctured mesothorax; shape and sculpturing of the disk of propo-deum; impunc tate abdomen.
32 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.. 65.From viridatus Lovell by the shining blue, more sparsely punc-tured mesothorax; dusky wings; disk of propodeum plicate at thebase only; impunctate abdomen.HALICTUS (CHLORALICTUS) ABUNDUS. new species.Male.?About 7 mm, long; head and thorax dark blue; abdomenblack; pubescence short, dull white. Facial quadrangle distinctlylonger than broad; orbits converging sharply below; face with sparsepubescence; front above the antennae closely punctured, below, moresparsely punctured; supraclypeal area and clypeus microscopicallylineolate and coarsely punctured; antennae dark reddish brown,second and third joints of equal length; flagellum ferruginous beneath.Thorax with quite dense pubescence, mesothorax microscopicallylineolate, coarsely punctured; disk of scutellum with two largepolished spots; disk of propodeum nearly crescentic, shining, withcoarse irregularly anastomosing rugae reaching the apex, at the sidesthe rugae extend on to the sides of the propodeum; posterior side ofpropodeum coarsely rugose; truncation clearly defined; tegulaeferrugino-testaceous, impunctate. Abdomen ovate, polished, verysparsely pubescent; segments with apical margins polished. Wingsreddish, hyaline; stigma and nervures red-testaceous; anterior wing5.5 mm. long; second submarginal cell higher than broad, receivingthe first recurrent nervure very near the apex; third submarginalhardly broader than high, about one and one-half times as long asthe second on marginal. Legs black, sparsely pubescent; tarsireddish.Habitat,?Beulah, New Mexico, end of August (Cockerell andPorter). Seven specimens.Type.?C^Li. No. 26432, U.S.N.M.Differs: From raidosensis Cockerell by the more sparsely punc-tured mesothorax ; sculpturing of the disk of propodeum ; flagellumpaler beneath; wings lighter; tarsi reddened; abdomen obovate, notpunctured.From viridatus Lovell by the paler flagellum ; yellowish pubescence
;
mesothorax tessellate, more closely punctured; wings and tegulaereddened. HALICTUS (CHLORALICTUS) TRANQUILLUS, new species.Male.?About 7 mm. long; head and thorax blue; abdomen black;pubescence white, sparse. Facial quadrangle longer than broad, orbitsconverging below; face above the antennae very closely punctured;the punctures below and on the sides of the face more sparse; clypeusand supraclypeal area microscopically tessellate, with sparse, deeppunctures; antennae dark, second and third joints of equal length;
AET. 19. AMEEICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 33flagellum testaceous beneath. Mesothorax and scutellum opaque,microscopically tessellate; the disk sparsely punctured; outside thedisk the punctures are about the diameter of a puncture apart; diskof propodeum dull, slightly elevated posteriorly, microscopicallytessellate between irregular rugae; the rugae extend on to the sides ofthe propodeum; truncation distinct laterally; tegulae dark, impunc-tate. Abdomen ovate, shining, impunctate; very sparsely pubescent;apical margins of segments polished, narrowly testaceous. Wingshyaline; anterior wing 5.25 mm. long; stigma and nervures dark;second submarginal cell higher than broad, receiving the first recur-rent nervure a little distance from the apex; third submarginal sub-quadrate, hardly contracted above, about one and one-third timesas long as the second on the marginal. Legs black, with yellowishhairs; tarsi reddish.Habitat.?Santa Fe, New Mexico, July (Cockerell). No. 3467; onLinum lewisii.Type.?C&t. No. 26433, U.S.N.M.HAUCTUS (CHLORALICTUS) PUDICUS. new species.Male.?About 6.5 mm. long; head and thorax dark blue; abdomenblack; pubescence pure white, sparse. Facial quadrangle longerthan broad; orbits converging slightly below; front above the anten-nae with close, shallow punctures; the punctures becoming moresparse below, and at the sides of the face which is greenish; clypeusand supraclypeal area microscopically tessellate, delicately punctured;apices of mandibles red; antennae dark, second and third joints ofequal length; flagellum testaceous beneath. Mesothorax opaque,microscopically tessellate, with punctures about the diameter of apuncture apart, and more scattered on the disk; punctation of scu-tellum similar to that of the mesothorax, two shining spots on thedisk; disk of propodeum crescentic, shining, plicate, the plicae some-what discontinuous and extending over the margin on to the sides;truncation distinct laterally, but not sharply defined; tegulae dark,impunctate. Abdomen narrowly ovate, shining, impunctate, verysparsely pubescent; apical margins of the segments polished, narrowlytestaceous. Wings hyaline; anterior wing 5 mm. long; stigma andnervures dark testaceous; second submarginal cell higher than broad,receiving the first recurrent nervure very near the apex; third sub-marginal as high as broad, contracted sharply above, about equidis-tant with the second on the marginal. Legs black; knees somewhatreddened; tarsi yellow.Habitat.?Longs Peak, Colorado, August, at flowers gentian(Cockerell).Type.?Csit. No. 26434, U.S.N.M.45554?25?Proc.N.M.vol.65 40
34 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.HALICTUS (CHLORALICTUS) LACTINEUS, new species.Male.?About 6 mm, long; head and thorax greenish blue; abdo-men black; pubescence pure white. Facial quadrangle longer thanbroad; orbits converging slightly below; the entire face, clypeus andsupraclj^peal area closely punctured; lower half of clypeus black;mandibles red at the apex; antennae dark, third joint longer thanthe second; flagellum rufo-testaceous beneath. Thorax denselypubescent; mesothorax somewhat polished, microscopically lineolate,very coarsely punctured, the punctures about the diameter of a punc-ture apart; the disk with more scattered punctures; scutellum closelypunctured, with two large polished spots on the disk; disk of pro-podeum crescentic, shining, the plicae extending to the posteriormargin which is sharply elevated; at the sides the plicae extend onto the lateral sides of the propodeum; mesopleurae with coarse shal-low punctures; truncation sharply defined laterally; tegulae honeycolor, impunctate. Abdomen ovate, apical margins of segmentssomewhat polished, narrowly testaceous; segments 1-3 delicatelypunctured, quite sparsely pubescent; segments 4-5 with piliferouspunctures only, pubescence more abundant. Wings milky white;anterior wing 4.25 mm. long; stigma and nervures honey color; thesecond submarginal cell much higher than broad, receiving the firstrecurrent nervure very near the apex; third submarginal broad atthe base, contracted above, at least twice as long as the second onthe marginal. Legs black; knees, apices of tibiae and tarsi yellow.Habitat.?Boulder, Colorado, August 4, 1908 (S. A. Rohwer).Type.?Cat. No. 26435, U.S.N.M.Differs: From albipennis Robertson by the more sparsely punc-tured mesothorax; sculpturing of the disk of propodeum; smallersize; paler tegulae; wings more milky white.From connexus Crawford by the more coarsely punctured meso-thorax; sculpturing of the disk of propodeum; paler tegulae andwings; color of head and thorax.HALICTUS (CHLORALICTUS) CALLIDUS, new species.Male.?About 5.5 mm. long; head and thorax golden green; abdo-men black; pubescence pure white. Facial quadrangle longer thanbroad; orbits converging slightly below; face clothed with very densepubescence, closely punctured; antennae dark, second and third jointsof equal length; flagellum testaceous beneath; mandibles pale red-dish. Thorax with dense, short pubescence; mesothorax opaque,microscopically tessellate, closely punctured, punctures laterallycontiguous, on the disk the punctures are a little more than thediameter of a puncture apart; punctation of the scutellum similarto that of the mesothorax; disk of propodeum crescentic, shining,
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 35plicate, the plicae reaching the broad, low posterior rim; at thesides the plicae extend over the margin on to the lateral sides ofthe propodeum; mesopleurae with coarse, shallow punctures; trun-cation sharply defined laterally; tegulae pale testaceous, impunctate.Abdomen ovate, with rather close, short hairs; apical margins of seg-ments with faint, transverse lineolations, testaceous; segments 1-3closely punctured: segments 4-5 with piliferous punctures only.Wings clear; anterior wing 4.5 mm. long; stigma and nervures verypale testaceous; subcostal nervure very dark; basal nervure verystrongly bent; second submarginal cell higher than broad; the firstrecurrent nervure joining the second transverso-cubital ; third sub-marginal broad, contracted above, about one and one-half times aslong as the second on the marginal. Legs black; knees and tips oftibae and tarsi yellow.Habitat.?East F'alls Church, Virginia, July 20 (S. A. Rohwer), atflowers Daucus caroia.
- Type.? Cs^t. No. 2643G, U.S.N.M.Differs: From liortensis Lovell by the larger size; paler wings; headand thorax golden green; punctured abdomen; sculpturing of the diskof propodeum.From disparilis Crawford by the narrower face; opaque, moreclosely punctured mesothorax and scutellum; sculpturing of the diskof propodeum; abdomen closely punctured, with greenish reflections.HALICTUS (CHLORALICTUS) APERTUS, new species.Male.?About 5 mm. long; head and thorax dark blue; abdomenblack; pubescence white. Facial quadrangle longer than broad;orbits converging sharply below; face clothed with quite dense pubes-cence; front above the antennae very closely punctured, the puncturesmore sparse below and on the sides of the face; punctures sparse onthe supraclypeal area and clypeus, which are dull and microscopicallytessellate; anterior margin of clypeus obscurely yellowish; third jointof antennae longer than second; flagellum dark testaceous, palerbeneath. Thorax with close, short hairs; mesothorax and scutellumopaque, microscopically tessellate, appearing almost finely granular,very closely punctured, the punctures more sparse on the disk; diskof propodeum crescentic, shining, with microscopic transverse lineo-lations between the plicae, which reach the apex; the plicae extend onto the sides of the propodeum; truncation distinct laterally; tegulaevery pale testaceous, impunctate. Abdomen obovate, densely pubes-cent, with delicate piliferous punctures; apical margins of segmentsmicroscopically lineolate; testaceous. Wings hyaline; about 3.5 mm.long; stigma and nervures testaceous; second submarginal cell higherthan broad, receiving the first recurrent nervme a little distance from
36 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.the apex; third submarginal subquadrate, contracted little above,hardly longer than the second on the marginal. Legs black; knees,tips of tibiae, and tarsi reddish yellow.Habitat.?East Falls Church, Virginia, July 22; and Chain Bridge,Virginia, (type locality), June 14 (S. A. Rohwer). Two specimens.Type.?C&t. No. 26437, U.S.N.M.Differs from hortensis Lovell by more robust species; mesothoraxopaque, closel}^ punctured; orbits converging more sharply below;paler flagellum; sculpturing of the disk of propodeum; paler wings.HALICTUS (CHLORALICTUS) GENUINUS, new species.Male.?About 5.5 mm. long; head and thorax blue-green; abdomenblack; pubescence white. Facial quadrangle somewhat longer thanbroad; orbits converging below; face densely pubescent; front abovethe antennae closely punctured, the punctures becoming more sparsebelow; antennae dark, the second and third joints of equal length;flagellum testaceous beneath; mandibles red at the apex. Thorax,with quite dense, short hairs, mesothorax opaque, microscopicallytessellate, very closely punctured, the punctures on the disk abouttwice as far apart; punctation of the scutellum similar to that of themesothorax; two smooth spots on the disk; disk of propodeum cres-centic, shining, inclosed posteriorly by a low rim, plicae reaching theposterior margin and extending on the sides of the propodeum; trun-cation distinct laterally; tegulae testaceous, impunctate. Abdomennarrowly ovate; apical margins of segments transversely lineolate;bases of segments with delicate piliferous punctures and dense, shorthairs. Wings clear hyaline; anterior wing 4.25 mm. long; stigmaand nervures pale testaceous; second submarginal cell higher thanbroad, contracted above, receiving the first recurrent nervure a littledistance from the apex; third submarginal almost as broad as high,contracted above, one and one-half times as long as the second on themarginal. Legs black, with quite abundant hairs; knees, tips oftibiae, and tarsi reddened.Habitat.?Chain Bridge, Virginia, June 14 (S. A. Rohwer).Type.?C&t. No. 26438, U.S.N.M.Differs from ^or^ensis Lovell by the larger, more robust size; darkerflagellum; more closely punctured mesothorax; darker tegulae; sculp-turing of the disk of propodeum.HALICTUS (CHLORALICTUS) BASILICUS, new species.Male.?About 5.5-6 mm. long; head and thorax blue-green; abdo-men black ; pubescence white. Facial quadrangle considerably longerthan broad; orbits converging sharply below; entire face closely punc-tured and clothed with dense pubescence; antennae dark, second and
ART. 19. iMEEICAN BEES OF THE GENUS HALICTUS?SANDHOUSE, 37third joints of equal length; flagellum testaceous beneath; lower half ofclypeus black. Thorax with quite dense, short hairs; mesothoraxshining, with faint microscopic lineolations, coarsely and deeplypunctured, the punctures about twice as far apait on the disk;punctation of the scutellum similar to that of the mesothorax, twolarge, sliining spots on the disk; disk of propodeum subcrescentic,shining, with coarse, irregular rugae extending over the margin andcovering the sides of propodeum; mesopleurae with coarse, shallowpunctures; truncation sharply defined laterally; tegulae honey color,impunctate. Abdomen ovate, shining, very sparsely pubescent;segments 1-2 delicately punctured; apical margins of segmentspolished, dark testaceous. Wings clear; anterior wing 4 mm. long;stigma and nervures very pale testaceous; second submarginal cellconsiderably higher than broad, receiving the first recurrent nervurenear the apex; third submarginal higher than broad, about twice aslong as the second on marginal, receiving the second recurrent ner-vure near the apex. Legs shining, black, with moderately close hairs;knees, tips of tibiae, and tarsi ye low.Habitat.?Colebrook, Connecticut, September 1-7 (W. M. Wheeler).Type.?C&t. No. 26439, U.S.N.M.Differs: From hortensis Lovell by the larger size; narrower face;clear wings; more abundant pubescence; sculpturing of the disk ofpropodeum.From nevadensis Crawford by the narrow face; paler flagellum andtegulae; clear wings; sculpturing of the disk of propodeum; broader,polished abdomen; knees red; tarsi clear yellow.HALICTUS (CHLORALICTUS) MACTUS, new species.Male.?About 5 mm. long; head and thorax dark blue-green; face,mesothorax, scutellum, and mesopleurae with a brassy tinge; abdo-men black; pubescence white. Facial quadrangle little longer thanbroad; orbits converging slightly below; face shining, sparsely pu-bescent; front closely punctured, the punctures more scattered andshallow below; antennae dark, second and third joints of equallength; flagellum testaceous beneath; lower half of clypeus shiningblack, sparsely punctured. Thorax with short, rather dense pubes-cence; mesothorax polished, with deep punctures a little more thanthe diameter of a puncture apart; punctation of scutellum much likethat of the mesothorax, two smooth spots on the disk; metathoraxshining, punctured; disk of propodeum dark blue, long, inclosed pos-teriorly by a low rim, with very irregular, discontinuous rugae; meso-pleurae shining, coarsely punctured; truncation well defined laterally;tegulae red-testaceous, impunctate. Abdomen narrowly ovate; seg-ments except for a very narrow, polished apical margin, with delicate,piliferous punctures and short hairs. Wings clear; anterior wing
38 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 05.3.75 mm. long; stigma and nervures pale testaceous; second submar-ginal cell higher than broad, the first recurrent nervure joining thesecond transverso-cubital; third submarginal broad below, contractedabove, little longer than the second on marginal. Legs black; tarsiwith yellowish hairs.Habitat?Longs Peak Trail, Colorado, July 18 at flowers Senecio(W. P. Cockerel!).Type.?Csit. No. 26400, U.S.N.M.HALICTUS (CHLORALICTUS) PENSITUS, new species.Male.?About 5 mm. long; head and thorax blue-green; abdomenblack; pubescence white. Facial quadrangle longer than broad ; orbitsconverging below; face shining, rather densel}^ pubescent; front closelypunctured; the punctures more scattered below; clypeus sparselypunctured, lower half black; antennae browTi, second and third jointsof equal length; flagellum dark testaceous beneath. Thorax denselypubescent; mesothorax shining, with punctures about the diameterof a puncture apart, a little more scattered on the disk; punctationof scutellum similar to that of the mesothorax; two polished spotson the disk; disk of propodeum long, shining, with more or less irreg-ular plicae not quite reaching the apex, which is polished ; mesopleuraecoarsely punctured; truncation distinct laterally; tegulae dark, im-punctate. Abdomen narrowly ovate; apical margins of segmentsvery narrowly testaceous, polished; bases of segments delicatel}" punc-tured, clothed with quite abundant pubescence. Wings clear; anteriorwing 3.75 mm. long; stigma and nervures pale testaceous; secondsubmarginal cell higher than broad, receiving the first recurrent nervurenear the apex; third submarginal contracted about one-half above,hardly longer than the second on the marginal, receiving the secondrecurrent nervure about one-fourth from the apex. Legs black.Habitat.?Boulder, Colorado, July 20 to August 1, 1908 (S. A.Rohwer). Four specimens.Type.?Cat. No. 26441, U.S.N.M.Differs: From hortensis Lovell by the larger size; more abundantpubescence; clear wings; reddish tegulae; head and thorax blue-green;sculpturing of the disk of propodeum; legs black.
, From nevadensis Crawford by the clear wings ; abundant pubescence;sculpturing of the disk of propodeum.HALICTUS (CHLORALICTUS) ACCENTUS, new species.Male.?About 6 mm. long; head and thorax olive green; abdomenblack; pubescence white. Facial quadrangle longer than broad;orbits converging below; antennae dark, third joint somewhat longerthan second; flagellum rufo-testaceous; front very closely punctured;below the punctures are more scattered; clypeus closely punctured;the anterior margin of clypeus and mandibles chrome-orange.
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 39Thorax with rather dense pubescence; mesothorax polished, closelypunctured, the punctures about the diameter of a puncture apartexcept on the disk where they are about twice as far apart; punc-tation of the scutellum similar to that of the mesothorax; disk ofpropodeum dark green, subcrescentic, shining, with coarse plicaereaching the apex, inclosed by a low, irregular rim; truncationdistinct laterally; tegulae very pale testaceous, impunctate. Abdo-men ovate, shining; apical margins of segments polished; bases ofsegments with delicate piliferous punctures, clothed with short hairs.Wings clear, faintly yellowish; anterior wing 4.5 mm. long; stigmaand nervures pale testaceous; second submarginal cell higher thanbroad; first recurrent nervure joining the second transverso-cubital
;
third submarginal broader than high, contracted above, one and one-half times as long as second on marginal. Legs black; knees, tipsof tibiae, and tarsi yellowish.Habitat.?Boulder, Colorado, August 1, 1908 (S. A. Rohwer); Uni-versity Campus (Cockerell) (type).Type.?Cat. No. 26442, U.S.N.M.Differs: From lioriensis Lovell by the larger, more robust size;narrower face; face and mesothorax golden green; flagellum rufo-testaceous beneath; sculpturing of the disk of propodeum; palerwings.From nevadensis Crawford by the narrower face; flagellum palebeneath; mandible yellowish; paler tegulae; sculpturing of the diskof propodeum; mesothorax more delicately punctured; knees andtarsi yellowish.From disparilis Crawford by the more sharply converging or-bits; face more closely punctured; more delicately punctured meso-thorax; less brassy face and mesothorax; sculpturing of the disk ofpropodeum. HAUCTUS (CHLORALICTUS) MOLLIS, new species,Male.?About 5.5 mm. long; head and thorax blue-green; abdomenblack; pubescence white. Facial quadrangle longer than broad; orbitsconverging slightly below; face sparsely pubescent; front closelypunctured; the punctures more sparse below; clypeus brassy, thelower one-third black; antennae dark, second and third joints ofequal length; flagellum dark, hardly paler beneath; mandibles dark;red at the apex. Thorax with quite dense, long hairs; mesothoraxpolished; punctures on the mesothorax about the diameter of apuncture apart, more sparse on the disk; scutellum closely punctured .two polished spots on the disk; disk of propodeum long, with irregu-larly anastomosing rugae reaching the apex, which is polished; mesopleurae and sides of propodeum coarsely punctured, brassy; trunca,tion not sharply defined laterally; tegulae very pale; impunctate.
40 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.Abdomen ovate, polished; segments punctured, sparsely pubescent.Wings clear; anterior wing 4 mm. long; stigma and nervures paletestaceous; second submarginal cell much higher than broad, receiv-ing the first recurrent nervure near the apex; third submarginalbroad, more than twice as long as the second on marginal. Legsblack; knees somewhat reddened; tarsi bro^vnish, with yellowish hairs.Habitat.?Florissant, Colorado, July 16 at flowers DasipTiora fruti-cosa (Cockerell).Type.?C&t. No. 26443, U.S.N.M.Differs from nevadensis Crawford by the pale tegulae; clear Avings;shining, more sparsely pubescent abdomen; margins of abdominalsegments dark; sculpturing of the disk of propodeum.HALICTUS (CHORALICTUS; MEROSUS, new species.Male.?About 5 mm. long; head and thorax dark blue; abdomendark brown ; pubescence white. Facial quadrangle longer than broad
;
orbits converging sharply below; face quite densely pubescent; frontwith close, but shallow punctures; the punctures are more sparsebelow; second and third joints of equal length; flagellum darktestaceous; yellow-testaceous beneath; mandibles reddish. Thoraxsparsely pubescent; mesothorax polished, with sparse, delicate punc-tures; scutellum delicately punctured, with two large, polished spotson the disk; disk of propodeum very dark blue,subcrescentic, shining,with a few irregular plicae reaching the apical margin; pleurae veryrough; truncation distinct laterally; tegulae pale, impunctate. Ab-domen ovate, shining; apical margins polished, testaceous; bases ofsegments sparsely pubescent. Wings yellowish; anterior wing 3.25mm. long; stigma and nervures testaceous; second submarginal cellhigher than broad, contracted about one-half above, receiving the.first recurrent nervure near the apex; third submarginal higher thanbroad, contracted above, more than twice as long as second on mar-ginal. Legs dark brown, with dull white hairs; knees, tips of tibiae,and tarsi yellow.Habitat.?Santa Fe, New Mexico, September 21, No. 5608 (Cock-erell) .Type.?Cat. No. 26444, U.S.N.M.Differs from microlepoides Ellis by the paler flagellum; delicatelypunctured mesothorax; sculpturing of the disk of propodeum; brown-ish legs and abdomen; darker wings.HALICTUS (CHLORALICTUS) MALINUS, new species.Male.?About 5.5 mm. long; head and thorax blue-green; abdomendark brovvn; pubescence white. Facial quadrangle little longer thanbroad; orbits converging sharply below; entire face densely pubescent;front closely punctured; the punctures more scattered below; second
AET. 19. AMEKICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 41and third antennal joints of equal length; flagellum testaceous,yellowish beneath; mandibles somewhat orange-yellow. Thoraxwith moderately dense pubesceuce; mesothorax shining, delicatelypunctured; scutellum with similar punctation; two polished spotson the disk; disk of propodeum dark green, crescentic, shining, withirregularly anastomosing rugae covering the entire area; tegulae honeycolor, impunctate; truncation not sharply defined, but distinct later-ally. Abdomen ovate, impunctate; apical margins of segments trans-versely lineolate, testaceous; bases of segments clothed with ratherabundant pubescence. Wings clear; anterior wing 3.5 mm. long;stigma and nervures very pale testaceous ; second submarginal cellhigher than broad, receiving the first recurrent nervure a little dis-tance from the apex; third submarginal subquadrate, little contractedabove, almost twice as long as the second on marginal. Legs brown;knees, tips of tibiae, and tarsi yellow.Habitat.?^East Falls Church, Virginia, July 16, at flowers Cicutamaculata and July 20, at flowers Daucus carota (type). Twospecimens (S. A. Rohwer.)Type.?C&t. No. 26445, U.S.N.M.Differs : From Tiortensis Lovell by the narrower face ; paler wingsand tegulae; paler flagellum; sculpturing of the disk of propodeum;mesothorax more closely punctured.From nevadensis Crawford by the more delicately punctured meso-thorax; flagellum pale beneath; sculpturing of the disk of propodeum;abdomen brown, the only punctures piliferous; legs brown, with kneesand tarsi yellowish.HALICTUS (CHLORALICTUS) INSOLITUS, new species.Male.?About 4.5-5 mm. long; head and thorax green; abdomenblack; pubescence white. Facial quadrangle longer than broad;orbits converging slightly below; front with very close, but shallowpunctures; below the punctures are more sparse; clypeus largelyblack, quite closely punctured; antennae dark, third joint hardlylonger than the second; flagellum rufo-testaceous beneath; mandiblesreddish yellow. Thorax with moderately close, short hairs; meso-thorax microscopically lineolate, closely and delicately punctured;punctation of scutellum similar to that of the mesothorax; disk ofpropodeum subcrescentic, with irregular rugae reaching the apex,which is sHghtly elevated; tmncation distinct laterally; tegulae verypale testaceous, impunctate. Abdomen slender, shining, impunctate
;
apical margins of segments polished, testaceous; bases of segmentsclothed with sparse, short hairs. Wings faintly dusky; anteriorwing 3.5 mm. long; stigma and nervures testaceous; second submar-ginal higher than broad ; first recurrent nervure meeting the secondtransverso-cubital ; third submarginal contracted about one-third
42 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65.above, receiving the second recurrent nervure near the apex; twiceas long as the second on marginal. Legs black, shining; knees, tipsof tibiae, and tarsi yellow.Habitat.?Vinton, Iowa, June 23, 1922 (Sandhouse).Type.?Q&i. No. 26446, U.S.N.M.Differs from exiguus Smith by the paler flagellum ; more slenderspecies; head and thorax not so brassy; sculpturing of the disk ofpropodeum.NEW LOCALITY RECORDS OF DESCRIBED SPECIES.The following records are new
:
HALICTUS EURYCEPS Ellis.New Mexico: 3 females, Beulah, August 25, 1899 (W. Porter).HALICTUS SUBCONNEXUS Ellis.New York: 1 female, Garrison (Eleth Cattell).HALICTUS PRUINOSIFORMIS Crawford.Colorado: 1 female, 4 miles north of Boulder, June 18 at flowersPetalostemon oligopTiyllus (T. and W. Cockerell) ; 1 female, ColoradoSprings (Cockerell). HALICTUS LAZULIS Ellis.Colorado: 1 female. Longs Peak Inn, June 25 (Cockerell).HALICTUS PAVONINUS Ellis.Colorado: 1 female, Longs Peak Inn, June 26 (Cockerell).HALICTUS SUCCINIPENNIS Ellis.Colorado: 1 female, Boulder, April 14, 1907, at flowers Physaria(S. A. Rohwer); 1 female, Boulder, May 21, 1922 (Elsie M. Foster).HALICTUS EOPHILUS Ellis.New Mexico: 1 female, Albuquerque, May 10, No. 1271 (Cockerell).HALICTUS STULTUS Cresson.New Mexico: 1 female, Cockerell No. 706; 2 females, Mesilla,May9-10, on Actinella richardsoni and Erigeron divergens (Cockerell).HALICTUS SPARSUS Robertson.Iowa: 4 females, Vinton, June 23, 1922 (Sandhouse).Virginia: 2 females, East Falls Church, May 7 and July 16 at flow-ers Cicuta macidata (S. A. Rohwer).New Mexico: 4 females, Santa Fe, July and August at Linum lew-isii and Lepachys Cockev&W^os. 3469,3472, 3387, and 3936; 3 females.Las Vegas, July 22 and August 14 at Grindelia squamosa and Cleome(W. Porter and Cockerell) ; 2 females, Pecos, June 15, and July 8 (W.Porter) and (Grabham).Colorado: 1 female Manitou, April 28 on Salix (Cockerell).
ART. 19. AMERICAN BEES OF THE GENUS HALICTUS?SANDHOUSE. 43HALICTUS ALBIPENNIS Robertson.Colorado: 1 female, Boulder, May 21, 1922 (Elsie M. Foster); 1female, June 18, at Petalostemon oligophyllus (T. and W. Cockerell).HALICTUS BRUNERI Crawford.Iowa: 2 females, Vinton, June 29, 1922 (Sandhouse).HALICTUS PERPUNCTATUS Ellis.Colorado: 1 female, Boulder, May 20, 1922 (F. D. Becker).HALICTUS CRESSONII Robertson.New York: 1 female, Garrison (Eleth Cattell).*HALICTUS VERSATUS Robertson.Iowa: 1 female, Vinton, June 29, 1922 (Sandhouse).HALICTUS OBLONGUS Lovell.Colorado: 2 females, Boulder, May 9, 1907, at flowers Taraxacum(S. A. Rohwer); 1 male. Peaceful Valley, August (Cockerell).New Mexico: 3 females, Santa Fe, July and August, one on Pent-stemon Cockerell Nos. 3825, 4227, and 4394; 1 female, Pecos, June24 (W. P. Cockerell); 1 female. Las Vegas, April 20, at flowers ofwild plum (Cockerell).Connecticut: 1 male, Colebrook, September 1 (W. M. Wheeler).HALICTUS NYMPHAEARUM Robertson.Massachusetts: 1 male, Woods Hole, (Eleth Cattell).HALICTUS HORTENSIS Lovell.Massachusetts: 1 male. Forest Hills, May 14 (collector not known)
.
New York: 1 female, Garrison, (Eleth Cattell).Virginia: 3 males. East Falls Church, July 16-20 at flowers ofDaucus carota and Oicuta maculata (S. A. Rohwer).HALICTUS INCOMPLETUS Crawford.New Mexico: 1 male, Aztec, September 19, 1898 (C. E. Mead).