STUDIES OF THE SUBTRIBE TACHYINA (COLEOPTERA: CARABIDAE: BEMBIDIINI) SUPPLEMENT A: LECTOTYPE DESIGNATIONS FOR NEW WORLD SPECIES, TWO NEW GENERA, AND NOTES ON GENERIC CONCEPTS^ Terry L. Erwin National Museum of Natural History, Smithsonian Institution, Washington, D. C. 20560 ABSTRACT — The New World species-group names of the carabid subtribe Tachyina are arranged alphabetically by genus. Lectotype designation are made where necessary and species are assigned accordingly to their proper genus. Two new genera, Costitaehys and Meotachys are described. Three species described in the genus Polyderis, testaceoUmbata Motschulsky, glahrcUa Mots., and brevisciila Mots., are reassigned to the genus Pcrigona of the Perigonini. A key is provided to Tachyina genera and notes on generic concepts are given. Introduction The purposes of this paper are to clarify generic concepts in New World Tachyina, designate lectotypes, list synonymies, provide a key to genera, and describe two new genera. All of this became possible after studying the World fauna to determine how New World groups relate to Old World groups. Much of this work has now been done and my series of revisions for the World Tachyina has begun to be i,ssued (Erwin, 1973a, 1974). The work here has been strictly limited without giving reasons for many of the actions taken. Reasons will be provided in forthcoming revisions where space will allow full development of ideas from facts, and analyses of these facts. Methods During 1971, I was able to study almost all primary type material for New World Tachyina as well as to study numerous Old World forms in the British Museum in London and in the Museum d'Histoire Naturelle in Paris. I labelled all lectotypes designated below with my own labels, hence these specimens can easily be found. For the most part, I have been able to synonymize names where appropriate; however, in some genera below further synonymization may be made in my revisionary works now in preparation. The following abbreviations indicate the various museums and private collections from which specimens were borrowed and in which listed specimens can be found: ^ This study was supported in part by the American Philosophical Society ( Pen- rose Fund #5795 ) through fimds provided for type studies at the British Museum (Natural History), Museum National d'Histoire Naturelle, Paris, and the Moscow University Museum. 123 124 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 AMNH American Museum of Natural History, New York, New York 10024; L. Herman, Jr. BMNH British Museum (Natural History), London, England; P. Hammond. CAS California Academy of Sciences, San Francisco, California 94118; H. B. Leech. CNC Canadian National Collection of Insects, Biosystematic Research Institute, Ottawa, Ontario; E. C. Becker. FDAC Florida State Collection of Arthropods, Gainesville, Florida 32601; R. E. Woodruff. HUB Institut fiir Spezielle Zoologie und Zoologisches Museum der Humboldt- Universitat zu Berlin, East Berlin, DDR; F. Hieke. IRSN Institut Royal des Sciences Naturelles de Belgique, Brussels, Belgium; G. Demoulin. MCZ Museum of Comparati\'e Zoology, Cambridge, Massachusetts 02138; P. J. Darlington, Jr. MHNP Museum National d'Histoire Naturelle, Paris; A. Bons. MMM Moscow Museum, Moscow, U.S.S.R.; S. I. Kelejnikova. SRM Swedish Riksmuseum, Stockliolm, Sweden; T. Nyholm. UCBP Paleontological Museum, University of California, Berkeley, California; J. H. Peck. UMU Zoological Institute, University, Uppsala, Sweden. USNM Smithsonian Institution, Washington, D. C. 20560. ZMC Universitetets Zoologiske Museum, Copenhagen; S. L. Tu.xen. ZMHF Universitetets Zoologiske Musevmi, Helsinki; H. Silfverberg. In the key and descriptions of new genera I refer to elytral setae by code numbers. Refer to Erwin ( 1974 ) for the "map" of elytral chaetotaxy. In tlie list of species the type locality is cited as given in the original description, or I have added the country if none was given. In some cases, I cite the actual locality label on the type. The genera and species are listed alphabetically and cross referenced by the older generic name. I cite several cases where the sex of the type specimen was undetermined due to specimen condition. This means that I feared the specimen would disarticulate if relaxed and separated from the card on which it was glued. Discussion of Genera Revisions of all genera of Tachyina are now in preparation. Two have been published (Erwin, 1973a, 1974) and one is in press. These studies provide the background for new combinations and different rankings listed below, many of which are not fully explained herein. It is tlie pui-pose of this section to acquaint the reader with the generic concepts below and relate these concepts to the world fauna. I discuss only the New World groups in detail here, mentioning the Old World forms where appropriate. The genus Xystosomus is the most primitive of the New World Tachyina. Tachijs trunci Darlington, of Queensland, Australia, has PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 125 similar character states and may be related. Xystosomus contains at least 32 species and has been revised (Erwin, 1973a). Further details may be sought in that paper. Tachymenis is the only other New World genus with members hav- ing a truncate anterior tibial apex. Its members live under bark, in rotten logs or stvnnps, or in deep leaf litter in cloud forests. I know over 100 species, although only 13 have been described. These beetles are a very common component of the tropical forest ecosystems (dry or wet) and are apparently restiicted to hardwoods. Members of one small group of species have reduced eyes and are apterous. There is no Old World counterpart of this group. The following genera, through Costitachys, have members with the anterior tibia notched, but have no mental fovae. The genus Tachyta has six New World species with a combined range extended from Alaska to Belize. The group is much more diverse in the Old World with at least 5 African species and 9 Oriental- Australian species. These beetles live under bark of conifers and hardwoods, and at least one Oriental species is arboreal, occurring on leaves in the vmderstory. Tachyta is composed of two subgenera, one of which is as yet unnamed (Erwin, 1975, in press). Elaphropiis is extremely large with many diverse groups which I will recognize formally as subgenera. In general, these beetles are convex to subdepressed and have a short, arcuate recurrent groove on the apex of the elytron. The group's greatest diversity is in the Oriental Region and in Africa. Many North and Middle American species are obligatory or facultative myrmecophiles; many others are riparian. The New World species are many in the north, decreasing in number southward toward northern South America where the group is replaced by mem- bers of Pericompsus in the riparian habitat. Members of some species are found in caves, but are not troglobitic. The sister groups Lymnastis and Micratopus are Old and New World counterparts ( vicariants ) , respectively. Their highly modified mouth- parts and the single supra-orbital seta caused T. L. Casey (1914) to place them in a tribe of their own. I have studied the single known specimen of the monotypic Straneoites of Africa. This bizarre species is intermediate in many respects between Lymnastis and Paratachys. Further study must be made to elucidate tlie relationship, however. These deep soil forms are extremely common in some situations, es- pecially at light during dispersal flights. Males were once thought to be rare in Micratopus species, but this is due to the lack of secondary sexual characteristics. I know about 40 species of Micratopus although only 5 have been described. Two Lymnastis occur in the New World, one in Cuba, and one in Hawaii. At least tlie Hawaiian species was intioduced as it occurs in soil around imported nursery stock. The Cuban species is wing dimoiphic, however, and should be closely 126 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 studied; its possible relationship to the Old World fauna will only be known after further study. The last genus of this group is Costitachijs, described herein as new. All other New World genera have members with a bifoveate mentmn and an apically notched anterior tibia. Paratachys is by far the largest Tachyina genus in the World; the New World species known to me now number over 300, most of them undescribed. These species are very similar externally, but the form of the internal sac of the male genitalia is exceptionally diverse from species to species. There are numerous species groups which are easily recognized, although not as easily as in Elaphropus. If subgenera were to be used in this group they would necessarily be based on male genitalia, therefore, I will use the species group concept in the revision of this genus. The diversity of species is almost matched by the diversity of habitats in which the species are found. Unlike the more ecologically restiicted genera discussed above and below, Paratachys members are riparian, in forest floor litter, bogs, swamps, bromeliads, grass roots, and so on. Members of the genus Tachys are halophilous in nature, all species occurring on the sea coast or near inland alkali deposits. Many species are estuarine and some are intertidal. These beetles easily cross salt- water gaps and are established on many islands. The Galapagos and Hawaiian Islands each have one endemic species and the former also have a more widespread species. The majority of species are in North America, but a few occur in the Oriental and Palaearctic Regions. Pericompsus contains 68 species and has been revised ( Erwin, 1974 ) . Further details may be sought in that paper. Members of Polyderis are found in all zoogeographic regions and on oceanic islands. These beetles are very small, one species with mem- bers being only 0.7 mm in length. It is quite probable that individuals are transported by man in soil and only a worldwide revision will uncover ti'ue identities in this genus. I know well over 50 species at this writing, among them many apterous and small-eyed forms. The remaining New World genera contain small numbers of species. Liotachys is monotypic, its single species occurring in the Amazon Basin. Meotachys contains about 19 species, 11 of them undescribed. This group has a combined range extended from Mexico to Brazil and is closely related to Paratachys. Porotachys is presently known from two species, one in Europe (recently introduced into eastern North America) and one in the Oriental Region. Species Herein Removed From Tachyina Bemhidium nigriceps Dejean, 1831:44. Lectotype, sex undetermined, here designated, in MHNP. Type-locality. — Georgia, as designated by Lindroth (1968:651). Recognized by LeConte (1848:474) as probably genus Perigona; confirmed by Lindroth (1955:22). I agree. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 127 Pohjderis testaceolhnbata Motschulsky, 1862:33. Lectotype, sex un- determined, here designated, in MMM. Type-locality. — Mobile, Ala- bama. This is Perigona nigriceps (Dejean). New synonymy. Polyderis glabreUa Motschulsky, 1862:34. Lectotype, sex undeter- mined, here designated, in MMM. Type-locality. — Mobile, Alabama. This is Perigona nigriceps (Dejean). New synonymy. Polyderis breviiiscula Motschulsky, 1862:34. Lectotype, sex undeter- mined, here designated, in MMM. Type locality. — Panama. Tliis is genus Perigona, hence Perigona breviiiscula Motschulsky, new com- bination. This is one of the several species of Central American Peri- gona which is apterous, small-eyed, rufo-testaceous, and small (about 3.0 mm). Provisional Key to the Genera of Tachyina Occurring in the New World" 1. Elytra impunctate, each witli 8 longitudinal caiinae extended from near base to apex; pronotum with 5 carinae; head with 3 carinae Costitachys, new genus — Elytra, pronotimi, and head without carinae or if elytra are carinate they are also punctate — . 2 2. Mentum with 2 deep foveae, each circular or horseshoe shaped 8 — Mentum without deep foveae, but with or without shallow bilateral depressions 3 3(2). Anterior tibia nearly or perfectly truncate apically - 4 — Anterior tibia strongly notched apicolaterally 5 4(3). Elytral disc witliout setae Ed 2 through 6; convex beetles Xystosomus Schaum — Elytral disc with setae at Ed 3 and 5; convex or depressed beetles with strongly reflexed pronotal margins Tachymenis Motschulsky 5(3). Elytra and abdominal sterna sparsely pubescent, usually rest of surface also; color testaceous to flavotestaceous; head slightly or strongly retracted into pronotum; recurrent groove of elytron absent or barely engraved .— 6 — Elytra and abdominal sterna not pubescent; color testaceous to black; head not retracted into pronotum; recurrent groove well marked 7 6(5). Apical abdominal sternum of both sexes witli 4 long setae along posterior margin, lateral setae sickle-shaped Micratopus Casey — Apical abdominal sternum of male with 2 long setae, female with 4 setae, setae straight Lymnastis Motschulsky 7(5). Recurrent groove of elytron short, arcuate, and closer to suture than side margin; form convex or subdepressed Elaphropus Motschulsky — Recurrent groove of elytron elongate, straight, and very close to side margin; form depressed Tachyta Kirby 8(2). Recurrent groove of elytron elongate, prolonged anteriorly beyond setae Ed 6 then curved posteriorly in the form of a hook 9 — Recurrent groove of elytron short, arcuate, and not prolonged beyond seta Ed 6, or elongate and close to side margin 10 See EiAvin (1974) for discussion of the term interneur. 128 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 9(8). Elytral interneiir 8 subsulcate posterior to middle with apical portion of sulcus bent medially just posterior of Eo 5 and 6; recurrent groove hooked around Ed 6 Paratachtjs Casey — Elytral interneur 8 subsulcate but not bent medially near Eo 5 and 6; recurrent groove hooked into Ed 6 or effaced laterad of Ed 6 Tachijs Stephens 10(8). Pronotum without hind angles, form pedunculate; interneur 8 absent ex- ternally Liotachys Bates — Pronotum with hind angles, or at least form not at all pedunculate; inter- neur 8 entire, or present at least anteriorly and/or posteriorly 11 11(10). Recurrent groove elongate and very close and parallel to side margin -.__ Porotachys Netolitzky — Recurrent groove absent, almost effaced, or short, arcuate, and well-en- graved and nearer the suture than to side margin or at least not parallel to side margin 12 12(11). Elytral interneurs punctate or sulcate-striate 13 — Elytral interneurs effaced or very shallowly striate, form small and de- pressed or subdepressed; color testaceous to flavous .. Polyderis Motschidsky 13(12). Elytral interneur 8 with posthumeral foveae or fovea, usually at basal fourth or middle OR elytron with 8 entirely punctate interneurs Pericompsus Leconte — Elytral interneur 8 without foveae nor elytron with more than 5 inter- neurs externally visible Meotachys, new genus Genus Costitachys Erwin, new genus Type-species: Costitachys inusitatus, new species, here designated. Description: Form (Fig. 1): Broad and subdepressed. Easily recognized from other Tachyina by the carinae of the head, pronotum, and elytra. Color: Flavotestaceous throughout, antennae slightly paler. Head: Clypeus and dorsum of head with 3 longitudinally oriented carinae; 1 supra-orbital seta per eye; eyes micro-setiferous; mentum without foveae, with minute tooth along anterior margin; antennae short, extended to base of protliorax, and articles pubescent from 2-11. Prothorax: With 5 longitudinally oriented carinae; without setae at base or along lateral margin; tibia obliquely notched apically. Mesothorax: Elytron with 8 longitudinally oriented carinae, sixth continuous with rounded humeral margin; marginal explanation nonsetulose and nonserrate; recur- rent groove absent; chaetotaxy formula Eo la, 2a, 3a, 4a, 5c, 6b, 7, 8a; Ed 1, 7b. Abdomen: Last visible sternum of female with 2 setigerous pores; male unknown. Size: Length, 2.60 mm; width, 1.12 mm. Distribution: Known only from the type locality of Santarem, Para, Brazil. Discussion: Though I have seen only one female specimen, the char- acteristics are so remarkable in comparison with the world Tachyina Fig. 1. Habitus of Costitachys inusitatus, female, Santarem, Brazil. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 129 130 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 that I feel fully justified in describing the new species and erecting the new genus. Etymology: Latin, costa, meaning rib and referring to the longi- tudinal carinae of the head, pronotum, and elytra; plus Tachys, the nominate genus of the subtribe, hence the Tachys with ribs. Costitachtjs initsitatiis Erwin, new species Fig. 1 Type-specimen: The holotype female is in MCZ; it was collected by F. G. Werner in April, 1963. Type-locality: Santarem, Para, Brazil. Description: Form (Fig. 1): Broad and subdepressed. Color, head, prothorax, mesothorax, abdomen, and size as described under generic description. Distribution: Known only from the type locality of Santarem, Para, Brazil. Etymology: Latin, imisitatus, meaning unusual and referring to the bizarre structure of the dorsal surface of these beetles in relation to other Tachyina. Genus Meotachys Erwin, new genus Fig. 2 Type-species: Tachys amplicoUis Bates, 1882:142, here designated. Description: Form (Fig. 2): Broad and convex or subdepressed. Easily recog- nized from other Tachyina by tlie foveate mentum, short arcuate recurrent groove on the elytral apex, and the medially deflected anterior apex of the posterior section of interneur 8 between Eo setae 5 and 6. In addition the females have 4 setigerous pores arranged in a straight row across abdominal sternum V. Color: Testaceous, rufotestaceous, or flavous with paler appendages than body. I have specimens of 1 undescribed species with piceous elytra and rufous head and pronotum. Head: Frontal furrows short and foveate or elongate and extended behind eyes; antennae elongate, extended beyond humerus; mentum bifoveate, anterior edge entire; antennal pubescence on apical half of article 2 and on all of articles 3-11. Prothorax: Prosternum glabrous; tibia with obliquely notched apex; pronotum with punctate or smooth basal transverse impression. Mesothorax: Elytra with punctate-striate or striate interneurs; recurrent groove short, arcuate, and extended anteriorly just past Ed seta 7a; chaetotaxy formula Eo la, 2b, 3a, 4c, 5b, 6a, 7, 8a, Ed. 1, 3, 5b, 7a, 8; plica present. Abdomen: Sterna III and IV with or without accessory setae in addition to the regular ambulatory setae; sternum V with short scattered setae, male also with 2 long setae, female with 4 long setae arranged in a transverse row. -> Fig. 2. Habitus of Meotachys amplicoUis, female, El Palmar, Veracruz, Mexico. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 131 132 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Secondary sexual characteristics: Besides the setae of sternum V mentioned above, the males have the probasitarsus dilated medially and the dilation is spini- fonn, beneath which is a small pad of squamate setae. Size: Length, 1.5 to 4.6 mm; width, 0.7 to 1.6 mm. Distribution: The combined ranges of the species known to me at this time extend from Nayarit and San Luis Potosi States in Mexico south to Matto Grosso State in Brazil. Discussion: Besides the eight species Hsted herein, I have studied 11 undescribed species. The genus is poorly represented in collections and it is possible that special collecting techniques are necessary to find these beetles. The largest nonriparian series I have seen came from litter (W. L. Brown, collector) or Berlese samples (J. M. Campbell, collector ) . Etymology: Latin, meatus, meaning way, path, passage, referring to the foveae of the mentum as passages into the head, plus Tachys, the nominate genus of the subtribe. LIST OF GENERIC AND SPECIES-GROUP NAMES OF NEW WORLD TACHYINA [Barytachys Chaudoir, see Elaphorpus.] [Blemus LeConte, see Micratopiis.] Costitachys Erwin Costitachys Erwin (see above). Type-species: Costitachys iinisitatus Erwin (see above); by original designation and monotypy. Costitachys inusitatus Erwin Costitachys inusitatus Erwin (see above). Holotype, a female, in MGZ. Type- locality: Santarem, Para, Brazil. Elaphropus Motschulsky Elaphropus Motschulsky, 1839:73. Type-species: Elaphropus carahoides Mot- schulsk y1,862: 7mb 4y;onotypy. Tachylopha Motschulsky, 1862:27. Type-species: Lopha ovata Motschulsky, 1851:509; by monotypy. Tachyura Motschulsky, 1862:27. Type-species: Elaphrus quadrisignatus Duft- schmidt, 1812:205; subsequent designation by Jeannel, 1941:434. Barytachys Chaudoir, 1868:213. Type-species: Bemhidium incurvum Say, 1834: 440; subsequent designation by Jeannel, 1941:434. Sphaerotachijs G. Miiller, 1926:95. Type-species: Bemhidium haemorrhoidale Dejean, 1831:58; by monotypy. The subsequent designation by Jeannel (1941: 434) was unnecessary. Trepanotachys Alluaud, 1933:17. Type-species: Bemhidium haemorrhoidalis Dejean, 1831:58; original designation. Objective junior synonym of Sphaerotachys G. Miiller. Tachyphanes Jeannel, 1946:362. Type-species: Bemhidium amahile Dejean, 1831:45; original designation. [Elaphropus apacheana (Casey), see Elaphropus dolosus.] PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 133 Elaphropus anceps ( LeConte ) , new combination Tachys anceps LeConte, 1848:470. Lectotype, a female, here designated, in MCZ, No. 5583. Type-locality: Nebraska. [Elaphropus axcilla (Casey), see Elaphropus xanthopus.] Elaphropus anthrax ( LeConte ) , new combination Tachys anthrax LeConte, 1851:192. Lectotype, a male, here designated, in MCZ, No. 5580. Type-locality: San Diego, California. [Elaphropus barnesi (Stehr), see Elaphropus tripunctatuin.] Elaphropus brevis (Casey), new combination Tachyura brevis Casey, 1918:182. Lectotype, a female, here designated, in USNM, No. 46918. Type-locality: Fort Monroe, Virginia. This is not die same species as E. granarius (Dejean) as supposed by Lindroth, 1966:414. Elaphropus brunnicollis ( Motschulsky ), new combination Tachyura brunnicollis Motschulsky, 1862:28. Lectotype, sex undetermined, here designated, in MMM. Type-locality: Mobile, Alabama. Barytachys gemellus Casey, 1884:71. Lectotype, a female, here designated, in USNM, No. 46916. Type-locality: Cape May, New Jersey. New synonymy. Tachys subpunctatus Blatchley, 1924:164. Holotype probably at Purdue Uni- versity, not seen. Type-locality: Dunedin, Florida. From the description and material in tlie USNM I believe T. subpunctatus to be the same as E. brunnicollis. New synonymy. Elaphropus ceylanicus ( Nietner ) , new combination Bembidium ceylanicus Nietner, 1858:423. Types in Berlin Zoological Museum according to Darlington ( 1962:446). Type-locaHty : Ceylon. Tachys mucescens Blackburn, 1878:158. Lectotype, a female, here designated, in BMNH. Type-Iocahty: Honolulu, Hawaii. Britton, 1948:239. Elaphropus cockerelli ( Fall ) , new combination Tachys cockerelli Fall, 1907:218. Lectotype, a female, here designated, in MCZ, No. 23871. Type-locality: Romeroville, New Mexico. Elaphropus congener ( Casey ) , new combination Tachyura congener Casey, 1918:181. Lectotype, a female, here designated, in USNM, No. 46914. Type-locaHty: Austin, Texas. Lindroth (1966:417) synony- mized this with E. anceps LeConte, but the species are clearly different. Elapropus conjugens (Notman), new combination Tachys conjugens Notman, 1919:229. Types probably in Staten Island Museum, New York, not seen. Type-locality: Rincon Mountains, Arizona. This is the first available name for Hayward's unavailable junior primary homonym, Tachys trechi- jo r mis. Tachys trechiformis Hayward, 1900:216. Lectotype, a male, here designated, in MCZ, No. 7051. Type-locality: Verde River, Arizona. This name is a junior primary homonym of Tachys trechiformis Jordan. Tachys trechoicles Csiki, 1928:201. New name for T. trechiformis Hayward not Jordan, however Jordan's species belongs to genus Paratachys Casey. Elaphropus cruciatus ( Chaudoir ) , new combination Tachys cruciatus Chaudoir, 1868:214. Lectotype, a male, here designated, in MHNP. Type-locality: Panama, from the type label and listed second by Chaudoir. Elaphropus dolosus (LeConte), new combination Tachys dolosus LeConte, 1848:470. Lectotype, a female, here designated, in MCZ, No. 5584. Type-locality: Rocky Mountains. 134 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Tachijs rapax LeConte, 1851:192. Lectotype, a male, here designated, in MCZ, No. 5586. Type-locality: Gila River, Arizona. New synonymy. Tachijs audax LeConte, 1851:193. Lectotype, a female, here designated, in MCZ, No. 5585. Type-locality: Colorado River, Arizona. New synonymy. Tachyura apacheana Casey, 1918:184. Lectotype, a male in USNM, No. 46922. Type-locality: Riverside, Arizona. New synonymy. Elaphropus fatuus (Casey), new combination Tachyura fatua Casey, 1918:187. Lectotype, a male, here designated, in USNM, No. 46930. Type-locality: Lake Worth, Florida. Elaphropus ferrugineus (Dejean), new combination Bembidium ferrtigineum Dejean, 1831:59. Holotype apparently lost; specimen labelled as type in MHNP does not fit Dejean's description (see also Lindrotli, 1955:14, 1966:423, 424). Type-locality: Iowa City, Iowa, designated py Lindrotli, 1966:423. Tachys ovipennis Chaudoir, 1868:215. Lectotype, sex undetemiined, here desig- nated, in MHNP. Type-locality: Amerique septentrionale. Lindroth, 1966:423. [Elaphropus fracta (Casey), see Elaphropus ruhicaiida.] Elaphropus fuscicornis (Chaudoir), new combination Tachys fuscicornis Chaudoir, 1868:214. Lectotype, a female, here designated, in MHNP. Type-locality: Louisiana. [Elaphropus gaudens (Casey), see Elaphropus ruhricauda.] [Elaphropus gemellus (Casey), see Elaphropus hrunnicollis.] [Elaphropus glossema (Casey), see Elaphropus granarium.] Elaphropus granarius (Dejean), new combination Bembidium granarium Dejean, 1831:61. Holotype, a male, in MHNP. Type- locality: Mt. Washington, New Hampshire, designated by Lindroth, 1966:414. Barytachys glossema Casey, 1884:70. Lectotype, a male, here designated, in USNM, No. 46917. Two-Iocalit>' : Philadelphia, Pennsylvania. Casey ( 1918:182 ) recognized the synonymy, and it was confinned by Hayward (1900:233) and Lind- roth (1966:414). I fully agree. Elaphropus incltrvus (Say), new combination Bembidium incurvum Say, 1834:440. Neotype, designated liy Lindroth and Freitag (1969:338) in MCZ. Type-locality: Indiana. Tachyura parallela Casey, 1918:182. Lectotype, a female, here designated, in USNM, No. 46915. Type-locality: Boston Neck, Rhode Island. Lindroth, 1966: 416. Tachys rhodensis Csiki, 1928:195. New name for T. parallela Casey not Mot- schulsky. [Elaphropus laetifica (Casey), see Elaphropus vernicata.] [Elaphropus laredoana (Casey), see Elaphropus tripunctatum .] Elaphropus levipes (Casey), new combination Tachyura levipes Casey, 1918:186. Lectotype, a male, here designated, in USNM, No. 46927. Type-locality: Long Island, New York. Lindroth ( 1966:420) wrongly synonymized this with T. xanthopus Dejean. Elaphropus liebecki (Hayward), new combination Tachys liebecki Hayward, 1900:207. Lectotype, a male, here designated, in MCZ, No. 7049. Type-locality: Texas. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 135 Elaphbopus mellitus (Casey), new combination Tachijura mellita Casey, 1918:176. Lectotype, a female, here designated, in USNM, No. 46907. Type-locality: Tepehuanes, Diirango, Mexico. Elaphropus microspilus (Bates), new combination Tachys microspilus Bates, 1882: 142. Lectotype, a male, here designated, in BMNH. Type-locality: San Geronimo, Guatemala. Elaphropus monticola (Casey), new combination Tachtjura monticola Casey, 1918:179. Lectotype, a male, here designated, in USNM, No. 46910. Type-locality: Jemez Springs, New Mexico. Elaphropus mundulus (Bates), new combination Tachys inundulus Bates, 1882:141. Lectotype, a male, here designated, in BMNH. Type-locality: Cordoba, Mexico. Elaphropus nebulosus (Chaudoir), new combination Tachys nehulosits Chaudoir, 1868:214. Lectotype, a female, here designated, in MHNP. Type-locality: Louisiana. Lindroth (1966:417) wrongly synonymized this with T. anceps LeConte. Tachyura solita Casey, 1918:178. Lectotype, a female, here designated, in USNM, No. 46908. Type-locality: Galveston, Texas. New synonymy. Tachyura soror Casey, 1918:179. Lectotype, a female here designated, in USNM, No. 46909. Type-locality: Austin, Texas. New synonymy. Elaphropus obesulus (LeConte), new combination Tachys obesulus LeConte, 1851:192. Lectotype, a female, here designated, in MCZ, No. 5581. Type-locality: Valley of the Gila River, Arizona. Elaphropus obtusellus (Bates), new combination Tachys obtuseUus Bates, 1882:141. Lectotype, a female, here designated, in BMNH. Type-localit>': Vera Cruz, Mexico. Elaphropus occultus (LeConte), new combination Tachys occultus LeConte, 1848:470. Lectotype, a male, here designated, in MCZ, No. 5582. Type-locality: Georgia. Hayward (1900:233) and Lindroth (1966:414) wrongly synonymized this with T. granarius Dejean. [Elaphropus parallela (Casey), see Elaphropus incurvus.] Elaphropus parvulus (Dejean), new combination Bembidium parvulum Dejean, 1831:57. Lectotype, a male, here designated, in MHNP. Type-locality: Spain. This European species has been introduced into western Washington. Elaphropus pericallis (Bates), new combination. Tachys pericallis Bates, 1882:141. Lectotype, a male, here designated, in BMNH. Type-localit>': Rio Naranjo, Guatemala. [Elaphropus profuga (Casey), see Elaphropus sedula.] Elaphropus purgatus (Bates), new combination Tachys purgatus Bates, 1882:142. Lectotype, a male, here designated, in BMNH. Type-locality: Puebla, Mexico. Elaphropus rexoicus ( Casey ) , new combination Tachyura renoica Casey, 1918:183. Lectotype, a female, here designated, in USNM, No. 46920. Type-locality: Reno, Nevada. Elaphropus rubicauda ( Casey ) , new combination Tachyura rubricauda Casey, 1918:186. Lectotype, a female, here designated, in USNM, No. 46928. Type-locality: Galveston, Texas, named in the first place. 136 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Tachyura fracta Casey, 1918:188. Lectotype, a male, here designated, in USNM, No. 46932. Type-locality: Waco, Texas, named in the first place. New synonymy. Tachyura gaudens Casey, 1918:188. Lectotype, a male, here designated, in USNM, No. 46933. Type-locality: Valley of the Rio Grande between Brownsville and El Paso. New synonymy. Elaphropus saturatus ( Casey ) , new combination Tachyura saturata Casey, 1918:187. Lectotype, a female, here designated, in USNM, No. 46931. Type-locality: Asheville, Nortli Carolina. Elaphropus sectator (Casey), new combination Tachyura sectator Casey, 1918:180. Lectotype, a male, here designated, in USNM, No. 46911. Type-locality: Provo, Utah. Tachyura sectator sospes Casey, 1918:180. Lectotype, a female, here designated, in USNM, No. 46912. Type-locality: Arizona. New synon>any. Elaphropus sedulus ( Casey ) , new combination Tachyura sedula Casey, 1918:184. Lectotype, a female, here designated, in USNM, No. 46923. Type-locality: Santa Cruz, California, named in the first place. Tachyura profuga Casey, 1918:185. Lectotype, a female, here designated, in USNM No. 46924. Type-locality: Reno, Nevada. New synonymy. [Elaphropus solita (Casey), see Elaphropus nehulosus.] [Elaphropus soror (Casey), see Elaphropus nehulosus.] Elaphropus tahoensis Casey, new combination Tachyura tahoensis Ca.sey, 1918:183. Holotype, a female, in USNM, No. 46921. Type-locality: Lake Tahoe, California. Casey (1918:183) mentions he saw only one specimen. [Elaphropus serva (Casey), .see Elaphropus tripunctatum.] Elaphropus tripunctatus ( Say ) , new combination Bemhidium tripunctatum Say, 1834:439. Neotype, designated by Lindroth and Freitag (1969:338), in MCZ. Type-locality: Indiana. Tachyura serva Casey, 1918:189. Holotype, a female, in USNM, No. 46935. Type-locality: Bluff Point, Lake Champlain, New York. New synonymy. Tachyura laredoana Casey, 1918:189. Holotype, a female, in USNM, No. 46934. Type-locality: Laredo, Texas. New synonymy. Tachyura harnesi Stehr, 1946:284. Type not seen, probably in Ohio State Uni- versity' Collection; the description is good and there can be no doubt this is E. tripunctatum (Say). Type-locality: Muskingum River, Muskingum township, Washington County, Ohio. New synonymy. Elaphropus tritax ( Darlington ) , new combination Tachys tritax Darlington, 1935:175. Holotype, a male, in MCZ, No. 22015. Type-locality: Camp Perrin, Haiti. [Elaphropus unionis (Csiki), see Elaphropus vernicata.] Elaphropus unistriatus (Bilimek), new combination Bemhidion unistriatum Bilimek, 1867:902. Location of type unknown. Type- locality: Cueva Cacaliuamilpa, Mexico. Bolivar y Pieltain and Hendrichs (1965) recognized this as a Tachyina and placed it in Tachyura. Elaphropus vernicatus (Casey), new combination Tachyura vernicata Casey, 1918:181. Lectotype, a female, here designated, in USNM, No. 46913. Type-locality: Probably Indiana. Lindroth (1966:417) wrongly synonymized this with T. anccps LeConte. Tachyura laetifica Casey, 1918:183. Lectotype, a female, here designated, in PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 137 USNM, No. 46919. Type-locality: St. Louis, Missouri. Lindroth (1966:419) regarded this as a separate species from E. anceps and with him I agree. However, since E. vemicata is not a synonym of E. anceps, but rather is a synonym of E. laetifica, E. vemicata has seniority. Tachijura tinionis Csiki, 1928:202. New name for T. laetifica Casey not Bates. Elaphropus vivAX (LeConte), new combination Tachtjs vivax LeConte, 1848:468. Lectotype, a male, here designated, in MCZ, No. 5578. Type-locality: Rocky Mountains. Tachtjs mendax LeConte, 1848:469. Lectotype, a female, here designated, in MCZ, No. 5589. Type-locality: New England, named in the first place. Casey (1918:185) and Hayward (1900:233) regarded this taxon wrongly as conspecific with E. xanthopus (Dejean) while Chaudoir (1868:215) regarded it wrongly as conspecific with E. ferrugenius (Dejean). New synonymy. Tachys capax LeConte, 1863:20. Lectot>pe, a female, here designated, in MCZ, No. 5579. Type-locality: Washington, D. C. New synonymy. Elaphropus xanthopus ( Dejean ) , new combination Bemhidium xanthopus Dejean, 1831:60. Lectotype, a male, here designated, in MHNP. Type-locality: Long Island, New York designated by Lindroth (1966: 420). Tachijura xanihopus laxipennis Casey, 1918:185. Holotype, a female, in USNM, No. 46925. Type-locality: Boston Neck, Rliode Island, New synonymy. Tachijura xanthopus fameJica Casey, 1918:185. Holotype, a male, in USNM, No. 46926. Type-locality: Boston Neck, Rhode Island. New synonymy. Tachijura ancilla Casey, 1918:186. Lectotype, a female, here designated, in USNM, No. 46929. Type locaUty: Southern Pines, North Carolina. Elaphropus yunax ( Darlington ) , new combination Tachijs yunax Darlington, 1939:87. Holotype, a male in MCZ, No. 23509. Type- locality: Sanchez, Dominican Republic. [EoTACHYS Jeannel, see Paratachys.] [IsoTACHYS Casey, see TacJiys.] Liotachys Bates Liotachys Bates, 1871b:267. Type-species: Liotachys antennatus Bates, 1871b: 268, by monotypy. Liotachys antennatus Bates Liotachys antennatus Bates, 1871b:268. Lectotype, a female, here designated, in MHNP. Type-locality: Santarem, Brazil (on the Amazon). Lymnastis Motschulsky Lymnastk Motschulsky, 1862:27. Type-species: Lymnaeum nidicus Motschul- sky, 1851:507; subsequent designation by Jeannel (1932:170). Paralimnastis Jeannel, 1932:176. Type-species: Limnastis swaluwenhergi Jean- nel, 1932:176; by monotypy and original designation. New synonymy. Limnastis, auct. Lymnastis Americana Darlington Limnastis americanus Darlington, 1934:83. Holotype, a male, in MCZ, No. 19504. Type-locaUty: Soledad, Cuba. [Lymnastis capito Bates, see Polyderis capita.] Lymnastis swaluwenbergi Jeannel Limnastis sivahtwenhergi Jeannel, 1932:176. Holotype, sex undetermined be- cause of specimen condition, in MHNP. Type-locality: Honolulu, Oahu, Hawaii. 138 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Meotachys Erwin Meotachtjs Erwin (see above). Type species: Tachtjs ampIicoUis Bates, 1882: 142; by original designation. Meotachys amplicollis ( Bates ) , new combination Tachtjs amplicollis Bates, 1882:142. Lectot>'pe, a female, here designated, in BMNH. Type-locality: Teapa, Mexico. Meotachys insularuai (Bates), new combination Tachys insulanim Bates, 1884:288. Lectotype, a male, here designated, in BMNH. Type-locality: San Miguel, Pearl Islands, Panama. Meotachys fraterculus (Bates), new combination Tachtjs fraterctihis Bates, 1871b:268. Holotype, a female, in MHNP. Type- locality: Santarem, Brazil. Meotachys jansoni (Bates), new combination Tachys jansoni Bates, 1882:143. Lectotype, a female, here designated, in BMNH. Type-locality: Chontales, Nicaragua. Meotachys platyderus (Bates), new combination Tachys platyderus Bates, 1871b:268. Lectotype, a female, here designated, in MHNP. Type-locality: Santarem, Brazil, according to the label of the type. Meotachys rufulus ( Motschidsky), new combination Tachytira rufiila Motschidsky, 1862:28. Lectot>'pe, sex undetermined, here desig- nated, in MMM. Type-locality: Obispo, Panama. Meotachys squiresi ( Bates ) , new combinatoin Tachys sqtiiresi Bates, 1871b:269. Holotype, a female, in MHNP. Type-locaHty: Bio Janeiro, Brazil. Meotachys sulcipennis (Bates), new combination Tachys sulcipennis Bates, 1871b:269. Holotype, a female, in MHNP. Type- locality: Ega (Tefe), Brazil. Micratopus Casey Micratoptis Casey, 1914:42. Type-species: Micratoptis ftisciceps Casey, 1914: 43; by monotypy. Ble77ms LeConte, 1848:473. Type-species: Blemtis aenescens LeConte, 1848: 473; by monotypy. Biennis was preoccupied by Blemus Stephens at the time of LeConte's citation of Blemtts Dejean, a nomen nudum. LeConte, in effect, became the author of Dejean's concept, but by that time Stephens had used the name for something else. Micratopus aenescens ( LeConte ) Biennis aenescens LeConte, 1848:473. Lectotype, a female, here designated, in MCZ, No. 5577. Type-locality: Georgia. Micratopus ftisciceps Casey, 1914:43. Lectotype, sex undetermined, here desig- nated, in USNM, No. 46973. Type-locality: Vicksburg, Mississippi. Barr, 1971: 34. [Micratopus fusciceps Casey, see Micratoptis aenescens.] Micratopus insularis Darlington Micratopus instilaris Darlington, 1934:86. Holotype, sex undetermined, in USNM. Type-locality: San Juan, Puerto Rico. Micratopus parviceps Darlington Micratopus parviceps Darlington, 1934:85. Holotype, sex undetermined, in USNM. Type-locality: Jatibonico, Cuba. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 139 MiCRATOPUS wiTHYCOMBEi Jeannel Micratopus withycombei Jeannel, 1932:168. Lectotype, a female, here desig- nated, in BMNH. Type-locality: Sainte-Augustine, Trinidad. Micratopus exiguus (R. F. Sahlberg), new combination Bembidium exiguiim R. F. Sahlberg, 1844a:54. Lectotype, probably female, here designated, in ZMHF. Type-locality: Petropolis, Brazil, from tlie label. This species was listed in Coleopterorum Catalogus as occurring in Ochotsk, Siberia. Sahlberg did not give a locality in his original description, although the carabid species described were supposed to have come from Ochotsk, Siberia (Sahlberg, 1844:3). The specimen labelled "B. exigttum" in ZMHF fits the Sahlberg descrip- tion quite well and I have no doubt that this specimen is what Sahlberg described. How then can we explain die labels "Petropolis, Brazil" and the fact that the species represented is South America, not Siberian? During 1844, Sahlberg also wrote an article describing Brazilian Carabidae (Sahlberg, 1844b). I believe he placed the B. exigimm description in his Siberian work, when it should have been in the Brazilian paper. [MiCROTACHYs Cascy, see Polyderis.] [MioPTACHYS Bates, see Tachymenis.] [Neotachys Kult, see Polyderis.] [Parallmnastis Jeannel, see Lymnastis.] Paratachys Casey Paratachys Casey, 1918:174. Type-species: Paratachys austinicus Casey, 1918: 174; by original designation. Eotachys Jeannel, 1941:426. Type-species: Elaphrus bistriatus Duftschmidt, 1812:205; by original designation. Erwin, 1971:236. Paratachys abruptus (Darlington), new combination Tachys abruptus Darlington, 1934:80. Holotype, a male, in AMNH. Type- locality: Gourbeyre, Guadeloupe. I have seen the two paratypes in MCZ, No. 19496, but not the holotype. Paratachys aexeipennis ( Motschulsky ) , new combination Tachys aeneipennis Motschulsky, 1862:29. Lectotype, a male, here desginated, in MMM. Type-locality: Mobile, Alabama. Paratachys aequinoctialis (Motschulsky), new combination Polyderis aequinoctialis Motschulsky, 1862:33. Lectotype, sex imdetermined because of specimen condition, here designated, in MMM. Type-locality: Panama. Paratachys albipes (LeConte), new combination Tachys albipes LeConte, 1863:20. Lectotype, a male, here designated, in MCZ, No. 5575. Type-locality: Louisiana. Tachys putzeyi FleutiaiLX and Salle, 1889:368. Lectotype, a female, here desig- nated, in MHNP. Type-locality: Camp Jacob, Guadeloupe. New synonymy. Paratachys arcanicola (BlackbiuTi), new combination Tachys arcanicola Blackburn, 1878:158. Lectotype, a male, here designated, in BMNH. Type-locality: Oahu, Hawaii. Paratachys austinicus Casey Paratachys austinicus Casey, 1918:174. Lectotype, a female, here designated, in USNM, No. 46905. Type-locality: Austin, Texas. Paratachys beaumonti (Casey), new combination Tachys beaumonti Casey, 1918:196. Lectotype, a male, here designated, in USNM, No. 46941. Type-locality: Colon, Panama. 140 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Paratachys bonariensis (Steinheil), new combination Tachys bonariensis Steinheil, 1869:247. Lectotype, a badly damaged male, here designated, in MHNP. Type-locality: Buenos Aires, Argentina. Paratachys carib ( Darlington ) , new combination Tachys carib Darlington, 1935:176. Holotype, a male, in MCZ, No. 22017. Type-locality: Ennery, Haiti. Paratachys castaneicolor (Bates), new combination Tachys castaneicolor Bates, 1882:139. Lectotype, a male, here designated, in BMNH. Type-locality: Guatemala (near the city), Guatemala. Paratachys chiriquinus ( Bates ) , new combination Tachys chiriquinus Bates, 1882:130. Lectotype, a male, here designated, in BMNH. Type-locality: Volcan de Chiriqui, Panama. Paratachys colonicus Casey Paratachys colonicus Casey, 1918:175. Lectotype, a female, here designated, in USNM, No. 46906. Type-locality: Colon, Panama. Paratachys columbiensis (Hayward), new combination Tachys columbiensis Hayward, 1900:231. Lectotype, a female, here designated, in MCZ, No. 7054. Type-locality: "Ch-rlottet I. Fla" from the type label. Paratychys cubax ( Darlington ) , new combination Tachys cubax Darlington, 1934:78. Holotype, a male, in MCZ, No. 19500. Type- locality: Soledad, Cuba. Paratachys cycloderus (Bates), new combination Tachys cycloderus Bates, 1871c: 11. Lectotype, a male, here designated, in MHNP. Type-locality: Rio Janeiro, Brazil. Paratachys delamarei (Jeannel), new combination Eotachys delamarei Jeannel, 1962:613. Holotype, a female, in MHNP. Type- locality: "Sierra de San Javier, Parque Aconquija, Argentina, 700m." Paratachy's diminutus (Bates), new combination Tachys diminutus Bates, 1871c: 11. Lectotype, sex undetermined because of specimen condition, here designated, in MHNP. Type-locality: Santarem, Brazil. Paratachys diploharpinus ( Bates ) , new combination Tachys diploharpinus Bates, 1878:602. Lectotype, a female, here designated, in BMNH. Type-locality: Chontales, Nicaragua. Paratachys dominicanus (Darhngton), new combination Tachys dominicanus Darlington, 1934:81. Holotype, a male, in AMNH. Type- locality: Long Ditton, Dominica. I have seen the 3 paratypes in MCZ, No. 19497, but not the holotype. Paratachys dromioides (Bates), new combination Tachys dromioides Bates, 1871b:269. Lectotype, a male, here designated, in MHNP. Type-locality: Ega (Tefe), Brazil, from the type label. Paratachys edax ( LeConte ) , new combination Tachys edax LeConte, 1851:194. Lectotype, a male, here designated, in MCZ, No. 5573. Type-locality: Not given on tlie label; Gilroy Hot Springs, Santa Clara County, California herewith designated. Paratachys filax (Darlington), new combination Tachys filax Darlington, 1934:83. Holotype, a female, in USNM. Type-locality: Cayamas, Santa Clara, Cuba. Paratachys flavicollis ( Motschulsky ) , new combination PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 141 Tachys flavicollis Motschulsky, 1862:28. Lectotype, a female, here designated, in MMM. Type-locality: Obispo, Panama. Tachys midtistriata Motschulsky, 1862:29. Lectotype, a female, here designated, in MMM. Type-locality: ? Panama. Motschulsky (1862:29) noted this was probably a variety of P. flavicollis. Pahatachys hyalinus (Casey), new combination Tachys hyalinus Casey, 1918:200. Lectotype, a female, here desginated, in USNM, No. 46946. Type-locality: Austin, Texas. Tachys temporalis Casey, 1918:200. Lectotype, a female, here designated, in USNM, No. 46947. Type-locality: New York, near the city. New synonymy. Paratachys hydrophilus (Gemiain), new combination Bcmhidittm hydrophilus Germain, 1906:616. Jeannel (1962:613) states the "type" is in Museum of Santiago (? University ). Type-locality: "Chili central." I have seen specimens in MHNP tliat Jeannel compared with Germain specimens, but I have not seen type material. Paratachys laevigatus (Boheman), new combination Trechus laevigatus Boheman, 1858:17. Lectotype, a female, here designated, in RMS. Type-locality: Buenos Aires, Argentina. Paratachys latalatus ( Csiki ) , new combination Tachys latalatus Csiki, 1928:185. New name for T. latipcnnis Hayward, not Sharp. Tachys latipcnnis Hayward, 1900:277. Lectotype, a male, here designated, in MCZ. Type-locality: San Estaban, Baja California, Mexico. Hay ward's T. lati- pcnnis is a junior primary homonym of T. latipcnnis Sharp (1886:374). Paratachys limbatellus ( Bates ) , new combination Tachys limbatellus Bates, 1884:288. Lectotype, a male, here designated, in BMNH. Type-locality: Bugaba, Panama. Paratachys lugubris (Motschulsky), new combination Tachys lugubris Motschulsky, 1862:30. Lectotype, sex undetennined because of specimen condition, here designated, in MMM. Type-locality: Obispo, Panama from the type label. Paratachys minutissimus ( Sahlberg ) , new combination Trechus minutissimus Sahlberg, 1844b :5 14. Lectotype, a female, here desig- nated, in ZMHF. Type-locality: Rio Janeiro, Brazil according to the label on type. Paratachys monstictus ( Bates ) , new combination Tachys monstictus Bates, 1871c: 11. Lectotype, a female, here designated, in MHNP. Type-locality: Rio Tapajos, Brazil. Paratachys oblitus (Casey), new combination Tachys oblitus Casey, 1918:195. Lectotype, a female, here designated, in USNM, No. 46937. Type-locality: New Jersey. Tachys cuneatus Casey, 1918:195. Lectotype, a male, here designated, in USNM, No. 46938. Type-locality: New York, near the city. New synonymy. Tachys cuneatus appalachius Casey, 1918:195. Lectotype, a female, here desig- nated, in USNM, No. 46939. Type-locality: Asheville, North Carolina. New synonymy. Tachys iowensis Casey, 1918:195. Lectotype, a male here designated, in USNM, No. 46940. Type-locality: Cedar Rapids, Iowa. New synonymy. Tachys gentilis Casey, 1918:197. Lectotype, a male, here designated, in USNM, No. 46943. Type-locality: ? Indiana. New synonymy. 142 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Tachys ohliquus Casey, 1918:201. Lectotype, a female, here designated, in USNM, No. 46949. Type-locality: Willets Point, Long Island, New York. New synonymy. Paratachys panamensis (Casey), new combination Tachys panamensis Casey, 1918:194. Lectotype, a female, here designated, in USNM, No. 46936. Type-locality: Colon, Panama. Paratachys paulax ( Darlington ) , new combination Tachys paulax Darlington, 1934:80. Holotype, a male, in USNM. Type-locality: Cayamas, Santa Clara, Cuba. Paratachys piceolus (Laferte), new combination Tachys piceolus Laferte, 1841:48. Lectotype, a male, here designated, in MHNP. Type-locality: Puerto Rico. Paratachys proximus (Say), new combination Bembidium proximus Say, 1823:88. Neotype, designated by Lindroth and Freitag (1969:338), in MCZ. Type-locality: BrookHne, Massachusetts, designated by Lindrodi (1966:432). Tachys nuhifer Casey, 1918:200. Lectotype, a female, here designated, in USNM, No. 46948. Type-locality: Vicksburg, Mississippi. New synonymy. Paratachys pumilus (Dejean), new combination Bembidium pumilum Dejean, 1831:43. Lectotype, a female, here designated, in MHNP. Type-locality: Amerique septentrionale, as originally given, herewith restricted to New York. Tachys corniscus LeConte, 1848:472. Lectotype, a female, here designated, in MCZ, No. 5571. Type-locality: New York, as restricted by Lindroth (1966:435). New synonymy. Paratachys rectangulus ( Notman ) , new combination Tachys rectangulus Notman, 1919:229. Holotype, a male, in Leng collection, probably in CAS. Type-locality: North America. I have not yet seen the type, however the description clearly indicates the species belongs to Paratachys. Paratachys rhodeanus ( Casey ) , new combination Tachys rhodeanus Casey, 1918:198. Lectotype, a female, here designated, in USNM, No. 46944. Type-locality: Boston Neck, Rhode Island. Paratachys sagax (Casey), new combination Tachys sagax Casey, 1918:197. Lectotype, a male, here designated, in USNM, No. 46942. Type-locality: Highland Park, Illinois. Paratachys scitulus ( LeConte ) , new combination Tachys scitulus LeConte, 1848:471. Lectotype, a female, here designated, in MCZ, No. 5568. Type-locality: Columbia, Pennsylvania. Tachys pallescens Casey, 1918:199. Lectotype, a male, here designated, in USNM, No. 46945. Type-locality: Keokuk, Iowa. New synonymy. Paratachys sequax ( LeConte ) , new combination Tachys sequax LeConte, 1848:472. Lectotype, a female, here designated, in MCZ, No. 5570. Type-locality: Rocky Mountains. Paratachys spadix (Casey), new combination Tachys spadix Casey, 1918:202. Holotype, a male, in USNM, No. 46950. Type- locality: El Paso, Texas. Tachys laxicollis Casey, 1918:202. Holotype, a female, in USNM, No. 46951. Type-locality: Houston, Texas. New synonymy. PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 143 Paratachys striax ( Darlington ) , new combination Tachys siriax Darlington, 1934:82. Holotype, a male, in MCZ, No. 19502. Type- locality: Soledad, Cuba. Paratachys subangulatus ( Bates ) , new combination Tachys subangulatus Bates, 1871c: 11. Lectotype, a male, here designated, in MHNP. Type-locality: Rio Janeiro, Brazil. Paratachys trechulus ( Darlington ) , new combination Tachys trcchidus Darlington, 1935:177. Holotype, a male, in MCZ, No. 22018. Type-locality: Blue Mountain Forest Reserve, Jamaica. Paratachys umbripennis (Chaudoir), new combination Tachys umbripennis Chaudoir, 1868:213. Lectotype, a female, here designated, in MHNP. Type-locality: Louisiana, according to label of type. Hayward ( 1900: 235) wrongly synonymized this with P. pumilum Dejean. Paratachys ventricosus ( LeConte ) , new combination Tachys ventricosus LeConte, 1863:20. Lectotype, a male, here designated, in MCZ, No. 5574. Type-locality: Louisiana. Tachys oopterus Chaudoir, 1868:212. Lectotype, a male, here designated, in MHNP. Type-locahty: Louisiana. Hayward (1900:227). Paratachys vernilis (Casey), new combination Tachys vernilis Casey, 1918:202. Lectotype, a male, here designated, in USNM, No. 46952. Type-locality: Brownsville, Texas. Paratachys vorax ( LeConte ) , new combination Tachys vorax LeConte, 1851:194. Lectotype, a female, here designated, in MCZ, No. 5569. Type-locality: Gila River, Arizona. [Pericompsus LeConte, see Erwin (1974).] [PoLYDERiDius Jeanuel, see Pohjderis.] Polyderis Motschulsky Pohjderis Motschulsky, 1862:27. Type-species: Tachys brevicornis Chaudoir, 1846:193; subsequent designation by Jeannel, 1941:424. Microtachys Casey, 1918:210. Type-species: Bembidium laevum Say, 1823:88; subsequent designation by Jeannel, 1941:424, Lindroth, 1966:424. Jeannel, 1941: 424. Neotachys Kult, 1961:2. Type-species: Tachys algiricus Lucas, 1846:79; by monotypy and original designation. Lindroth, 1966:424. Polyderidius Jeannel, 1962:611. Type-species: Pohjderidius rapoporti Jeannel, 1962:612; original designation. New synonymy. [Polyderis aequinoctialis Motschulsky, see Paratachys aequinoctialis.] Polyderis antigua Erwin Pohjderis antigua Erwin, 1971:234. Holotype, a female, in Chiapas Amber (Late Oligocene or early Miocene), No. 12974/B-7456, in UCBP. Type-locality: Chia- Mpeaxsi,co. Polyderis atoma ( Blackburn ) , new combination Tachys atomus Blackburn, 1878:158. Lectotype, a female, here designated, in BMNH. Type-locahty: Oahu, Hawaii. Polyderis capito ( Bates ) Lymnastis capito Bates, 1884:287. Lectotype, sex undetermined because of specimen condition, here designated, in BMNH. Type-locality: San Geronimo, Guatemala. Britton (1948:238) wrongly synonymized tliis name with P. atomus; die two species represented are quite distinct. Erwin, 1971:234. 144 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 PoLYDERis CURVANS ( Batcs ) , iiew combination Tachtjs curvans Bates, 1882:143. Lectotype, a male, here designated, in BMNH. Type-locality: San Geronimo, Guatemala. PoLYDERis DiAPHANA ( Casey ) , ncw combination Tachtjs diaphanus Casey, 1918:214. Lectot\i:)e, a male, here designated, in USNM, No. 46965. Type-locality: Austin, Texas. POLYDERIS LAEVIS ( Say ) Bembidium laeviim Say, 1823:88. Neotype, designated by Lindroth and Freitag (1969:339) in MCZ. Type-locahty: Arlington, Massachusetts designated by Lind- 1ro9t6h6,:426. Bemhidium troglodytes Dejean, 1831:44. Holotype, probably female, in MHNP. Type-localit>': Amerique Septentrionale. Dejean mentions a single individual (1831:44). This name was recognized as a synonym early, LeConte, 1848:472. Tachys congestus Casey, 1918:212. Lectotype, a female, here designated, in USNM, No. 46962. Type-locality: Norfolk, Virginia. New synonymy. Tachys unistriatus Casey, 1918:212. Lectotype, a male, here designated, in USNM, No. 46963. Type-locality: Pennsylvania. New synonymy. Tachys fhimenalls Casey, 1918:213. Lectotype, a female, here designated, in USNM, No. 46964. Type-locality: Vicksburg, Mississippi. New synonymy. Tachys rectus Casey, 1918:213. Lectotype, a female, here designated in USNM, No. 46961. Type-locality: Alexandria, Louisiana. New synonymy. Tachys unistriolatus Csiki, 1928:202. New name for T. unistriatus Casey, not Putzeys. POLYDERIS MIXUSCULA Motscllulsky Pohjderis mimiscula Motschulsky, 1862:36. Lectotype, sex undetermined, here selected in MMNL Type-locality: Obispo, Panama. PoLYDERis RUFOTESTACEA ( Hayward ) Tachys rufotestaceus Hayward, 1900: 217. Lectotype, a male, here designated, in MCZ, No. 7052. Type-locality: Pomona, California, from t>'pe labels. Lindroth, 1966:426. PoLYDERis RAPOPORTI ( Jcannel ) , new combination Pohjderiditis rapoporti Jeannel, 1962:612. Holotype missing from MHNP; other authentic specimens present. Type-locality: Serra de San Javier, Parque Aconquija, Argentina (700m). PoLYDERis TANTiLLA ( Motschulsky ) , ncw Combination Tachys tantilla Motschulsky, 1862:30. Lectotype, sex undetennined, here selected, in MMM. Type-locality: Obispo, Panama. Porotachys Netolitzky Porotachys Netolitzky, 1914:174. Type-species: Trechus hisulcatus Nicolai, 1822:26; by monotypy. Porotachys hisulcatus ( Nicolai ) Trechus hisulcatus Nicolay, 1822:26. Lindroth (1966) thought the type lost. Type-locality: Halle, Gennany. Tachys frontalis Hayward, 1900:212. Lectotype, a male, here designated, in MCZ, No. 7050. Type-locality: Peekskill, New York. Lindroth, 1966:424. [Sphaerotachys G. Miiller, see Elaphropus.] [Tachylopha Motschulsky, see Elaphropus.] PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 I45 Tachymenis Motschulsky Tachtjmenis Motschulsky, 1862:27. Type-species: Beinhidium flavicaudus Say, 1823:87; designated by Casey, 1918:220. Jeannel (1941:440) missed Casey's paper and designated Bemhidion namnn Gyllenhal. Mioptachys Bates, 1882:144. Type-species: Mioptachys trcchuides, here desig- nated as this is tlie first named species Bates mentioned. New synonymy. TACH'i'AiENis AUTUMXALis (Batcs), new combination Tachyta autumnalis Bates, 1882:137. Lectotype, a male, here designated in BMNH. Type-locality: Cordoba, Vera Cruz, Mexico. Tachymenis crucigera ( Bates ) , new combination Tachyta crucigera Bates, 1871c: 12. Lectotype, a male, here designated, in MHNP. Type- locality : Rio Janeiro, Brazil. Tachymenis cucujoides (Bates), new combination Tachyta cucujoides Bates, 1882:138. Lectotype, a male, here designated in BMNH. Type-locality: Belize, Belize. Tachymenis flavicauda ( Say ) Beinhidium flavicaudus Say, 1823:87. Neotype designated by Lindrotli and Freitag (1969:339) in MCZ. Type-locality: White Sulphur Springs, West Vir- ginia, as designated by Lindroth (1966:441). Tachymenis marginicoUis Motschulsky, 1862:32. Lectotype, sex undetermined because of specimen condition, here designated, in MMM. Type-locality: New Orleans, Louisiana. Bates (1882) recognized this name as a possible synonym of T. flavicauda. Casey (1918) and Lindroth (1966) declared it such, and I agree. Tachymenis insularis ( Darlington ) Xystosomus insularis Darlington, 1939:86. Holotype, a male, in MCZ, No. 23508. Type-locality: Loma Vieja, Dominican Republic. Erwin, 1973a: 1. [Tachymenis marginicollis Motschulsky, see Tachymenis flavicauda.] Tachymenis melania ( Bates ) , new combination Tachyta melania Bates, 1871c: 12. Lectotype, a male, here designated, in MHNP. Type-locality: Rio Janeiro, Brazil. Tachymenis neotropica (Csiki), new combination Tachys neotropicus Csiki, 1928:189. New name for Tachys marginicollis Schaum (1863:89) not Motschulsky. Tachys marginicollis Schaum, 1863:89. Type series presumed lost. Dr. Hieke of HUB sent me 21 specimens under this name from Schaum collection, however all were pale, not "Niger, subaeneus" as Schaum stated, and they were labelled Panama, not Venezuela. The description leaves little doubt that Tachymenis is the correct genus however. Tachymenis noctis ( Darlington ) , new combination Tachys noctis Darlington, 1935:174. Holotype, a male, MCZ No. 22014. Type- localiay: Rocke Croix, Massif de la Hotte, Haiti. Tachymenis ocularis Casey Tachymenis ocularis Casey, 1918:222. Lectotype, a female, here designated, in USNM, No. 46972. Type-locality: Quiriqua, Guatemala. Tachymenis oopteroides ( Bates ) , new combination Mioptachys oopteroides Bates, 1882:144. Lectotype, sex undetermined because of specimen condition, in BMNH. Type-locality: Totonicapam, Guatemala. 146 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Tachymenis parallela (Bates), new combination Tachyta parallela Bates, 1871c: 12. Lectotype, a male, here designated, in MHNP. Type-locality: Ega (Tefe), Brazil. Tachtjs batesi Csiki, 1928:169. New name for T. parallela Bates, not Motschul- sky. [Tachymenis reflexicollis Motschulsky, see Tachymenis flavicauda.] Tachymenis trechoides (Bates), new combination Mioptachys trechoides Bates, 1882:144. Lectotype, sex undetermined because of specimen condition, here designated, in BMNH. Type-locality: Totonicapam, Guatemala. Tachymenis xanthura ( Bates ) , new combination Tachyta xanthura Bates, 1871c: 12. Holotype, a female, labelled as such by me, in MHNP. Bates mentioned specifically that he saw only one specimen. Type- locality: Rio Janeiro. [Tachyphanes Jeannel, see Elaphropus.] Tachys Stephens Tachys Stephens, 1829:4. Type-species: Tachys scutellaris Stephens, 1829:5; subsequent designation by Hope (1838:61). Isotachys Casey, 1918:204. Type-species: Tachys vittiger LeConte, 1851:193; subsequent designation by Lindroth (1966:427). Isotachys was treated as a sub- genus by Casey (1918) and Lindroth (1966). In my analysis of the world fauna, I do not think the included species deserve more than "species group" status. [Tachys abruptus Darlington, see Parataclujs ahruptus.] [Tachys aeneipenms Motschulsky, see Paratachys aeneipcnnis.] [Tachys albipes LeConte, see Paratachys albipes.] [Tachys AxMplicollis Bates, see Meotachys amplicollis.] [Tachys anceps LeConte, see Elaphropus anceps.] [TAcirys anthrax LeConte, see Elaphropus anthrax.] [Tachys arcanicola Blackbum, see Paratachys arcanicola.] Tachys argentinicus Csiki Tachys argentinicus Csiki, 1928:168. New name for T. dromioides Jensen-Ha- arup not Bates. Bates' species belongs to Paratachys. Tachys dromioides Jensen-Haarup, 1910:554. Lectotype, a male, here desig- nated, in ZMC. Type-locality: "Prov. Mendoza," Argentina. This name is a junior primary homonym of T. dromioides Bates, 1871b:269. [Tachys atomus Blackburn, see Polyderis atomus.] [Tachys audax LeConte, see Elaphropus dolosus.] [Tachys batesi Csiki, see Tachymenis parallela.] [Tachys beaumonti Casey, see Paratachys heaumonti.] [Tachys beebei Mutchler, see Tachys vittiger.] [Tachys bonariensis Steinheil, see Paratachys honariensis.] Tachys bradycellinus Hayward Tachys bradycellinus Hayward, 1900:224. Holotype, a male, in MCZ, No. 7053. This specimen was noted as a unique by Hayward (1900:224). Type-locality: Louisiana. Tachys bryanti Lindroth Tachys bryanti Lindroth, 1966:430. Holotype, a male, in CAS, No. 10007. Type-locality: Edmonton, Alberta, Canada. [Tachys capax LeConte, see Elaphropus vivax.] PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 I47 [Tachys carib Darlington, see Paraiachijs carib.] [Tachys castaneicolor Bates, see Paraiachijs casianeicolor.] [Tachys chiriquinus Bates, see Paratachtjs chihquimis.] [Tachys cockerelli Fall, see Elaphropus cockeielli.] [Tachys conjugens Notnian, see Elaphropus conjiigens.] Tachys corax LeConte Tachys corax LeConte, 1851:194. Lectotype, a female, here designated, in MCZ, No. 5572. Type-locality: "Colorado desert (New River)." Tachys fimehris Casey, 1918:205. Lectotype, a female, here designated, in USNM, No. 46954. Type-locality: Provo, Utah. New synonymy. Tachys esurialis Casey, 1918:209. Lectotype, a female, here designated, in USNM, No. 46953. Type-locality: San Diego, California. New synonymy. [Tachys cohimbiensis Hayward, see Paratachys coJumhietisis.] [Tachys congestus Casey, see Pohjderis laevis.] [Tachys corruscus LeConte, see Paratachys piimihun.] [Tachys cruciatus Chaudoir, see Elaphropus cruciatus.] [Tachys cubax Darlington, .see Paratachys cubax.] [Tachys cuneatus Casey, see Paratachys oblitus.] [Tachys curvans Bates, see Polyderis curvans.] [Tachys cycloderus Bates, see Paratachys cycloderus.] [Tachys diaphanus Casey, see Polyderis diaphanus.] [Tachys diminutus Bates, see Paratachys diminutus.] [Tachys diploharpinus Bates, see Paratachys diploharpimis.] [Tachys dolosus LeConte, see Elapliroptis dolosus.] [Tachys dominicanus Darlington, see Paratachys dominicanus.] [Tachys dromioides Bates, see Paratachys droniioides.] [Tachys edax LeConte, see Paratachys edax.] [Tachys ensenade Mutchler, see Tachys vittigar.] [Tachys esurialis Casey, see Tachys corax.] [Tachys falli Hayward, see Tachyta fallL] [Tachys fasciatus (Boheman), .see Tachys oahuensis.] [Tachys filax Darlington, see Paratachys filax.] [Tachys flavicollis Motschulsky, see Paratachys flavicollis.] [Tachys flumenalis Casey, see Polyderis laevis.] [Tachys fraterculus Bates, see Meotachys fraterculus.] [Tachys frontalis Hayward, see Porotachys hisulcatus.] [Tachys fuscicornis Chaudoir, see Elaphropus fuscicornis.] [Tachys funebris Casey, see Tachys corax.] [Tachys gentilis Casey, see Paratachys oblitus.] Tachys halophilus Lindroth Tachys halophilus Lindroth, 1966:428. Holotype, a male, in CNC. Type- locality: Woodside, N.W. Portage-la-Prairie, Manitoba, Canada. [Tachys hispaniolae Darlington, see Tachyta hispaniolae .] [Tachys hyalinas Casey, see Paratachys hyalinas.] [Tachys insularum Bates, see Meotachys insidarum.] [Tachys iowensis Casey, see Paratachys oblitus.] [Tachys jansoni Bates, see Meotachys jansoni.] [Tachys latalatus Csiki, see Paratachys latalatus.] 148 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 [Tachys latipennis Hayward, see Paiatachys latalatus.] [Tachys laxicollis Casey, see Paratachys spadix.] [Tachys liebecki Hayward, see Elaphropiis liebecki.] [Tachys lembatellus Bates, see Paratachys limhatellus.] Tachys litoralis Casey Tachijs litoralis Casey, 1884:15. Holotype, a female, in USNM, No. 46955. Type-locality: Atlantic City, New Jersey. Casey (1884:16) specifically mentions "one specimen." Hayward (1900:234) wrongly synonymized T. litoralis witli T. pallidus. Tachys occultator Casey, 1884:69. Holotype, a female, in MCZ, No. 5576. Type- locality: Cape May, New Jersey. Casey (1884:70) again specifically mentions "1" specimen. New synonymy. Tachys omissus Casey, 1918:206. Lectotype, a female, here designated, in USNM, No. 46956. Type-locality: Fort Monroe, Virginia. New synonymy. Tachys luridicollis Casey, 1918:207. Lectotype, a male, here designated, in USNM, No. 46957. Type-locality: Galveston, Texas. New synonymy. Tachys torrescans Casey, 1918:207. Lectotype, a female, here designated, in USNM, No. 46958. Type-locality: Pass Christian, Mississippi. New synonymy. [Tachys L-i'MNAEoroEs Bates, see Tachys misellus.] [Tachys lugubris Motschiilsky, see Paratachys hi^uhris.] [Tachys luridicollis Casey, see Tachys litoralis.] [Tachys marginicollis Schaum, see Tachymenis flavicaiida.] [Tachys marginellus LeConte, see Tachys vittiger.] [Tachys mendax LeConte, see Elaphropiis vivax.] [Tachys microspilus Bates, see Elaphropiis microspilus.] Tachys misellus Laferte Tachys misellus Laferte, 1841:48. Lectotype, a male, here designated, in MHNP. Type-locality: Texas. Tachys lymnaeoides Bates, 1882:139. Lectotype, a male, here designated, in BMNH. Type-locality: Champerico, Guatemala. New synonymy. [Tachys monstictus Bates, see Paratachys monstictus.] Tachys mordax LeConte Tachys mordax LeConte, 1851:193. Lectotype, a female, here designated, in MCZ, No. 5564. Type-locality: Colorado. [Tachys mucescens Blackburn, see Elaphropiis ceylanicus.] [Tachys multistriata Motschulsky, see Paratachys flavicollis.] [Tachys mundulus Bates, see Elaphropiis munduhis.] [Tachys nebltlosus Chaudoir, see Elaphropiis nehitlosiis.] [Tachys neotropicus Csiki, see Tachymenis neotropiciis.] [Tachys noctis Darlington, see Tachymenis noctis.] [Tachys nubifer Casey, see Paratachys proximus.] Tachys oahuensis Blackburn Tachys oahuensis Blackburn, 1878:158. Lectotype, a female, here designated, in BMNH. Type-locality: Oahu, Hawaii. Trechus fasciatns Boheman, 1858:17. Lectotype, a female, here designated, in SRM. Type-locality: "Insula Oahu (Honolulu)" Hawaii. This name is a junior primary homonym of T. fasciatus Motschulsky, 1851:506. Motschulsky's T. fas- ciatns is now considered a Paratachys. [Tachys obesulus LeConte, see Elaphropiis ohesulus.] PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 149 [Tachys obliquus Casey, see Paratachijs oblilus.] [Tachys oblitus Casey, see Paratachijs ohlittis.] [Tachys obtusellus Bates, see Elaphropus obtusellus.] [Tachys occult ator Casey, see Tachys litoraUs.] [Tachys occultus LeConte, see Elaphropus occultus.] [Tachys omissus Casey, see Tachys Utoralis.] [Tachys oopterus Chaudoir, see Pamtachys ventricosus.] [Tachys ovipennis Chaudoir, see Elaphropus ferrugineitm.] [Tachys pallescens Casey, see Pamtachys scituhis.] Tachys pallidus Chaudoir Tachys pallidus Chaudoir, 1868:212. Lectotype, a male, here designated, in MHNP. Type-locaUty: Texas. [Tachys panamensis Casey, see Paratachys panatnensis.] [Tachys paulax Darhngton, see Paratachys paulax.] [Tachys pericallis Bates, see Elaphropus pericallis.] [Tachys piceolus Laferte, see Paratachys piceohts.] [Tachys picturatus Putzeys, see Tachys vittiger.] [Tachys platyderus Bates, see Meotachys platydcrus.] Tachys pulchellus Laferte Tachys pulchellus Laferte, 1811:45. Lectotype, sex not determined because of specimens condition, here designated, in MHNP. Type-locahty: Texas. Tachys pugnax Casey, 1918:207. Lectotype, a female, here designated, in USNM, No. 46959. Type-locality: Galveston, Texas. New synonymy. Tachys suhtropicus Casey, 1918:208. Lectotype, a female, here designated, in USNM, No. 46960. Type-locality: Brownsville, Texas. New synonymy. [Tachys pugnax Casey, see Tachys pulchellus.] [Tachys purgatus Bates, see Elaphropus purgatus.] [Tachys putzeyi Fleutiaux and Salle, see Paratachys alhipes.] [Tachys rapax LeConte, see Elaphropus dolosus.] [Tachys rectangulus Notman, see Paratachys rectangulus.] [Tachys rectus Casey, see Polyderis laevus.] [Tachys rhodeanus Casey, see Paratachys rhodeanus.] [Tachys rhodensis Csiki, see Elaphropus incurves.] [Tachys rufotestaceus Hay ward, see Polyderis rufotcstaccus.] [Tachys rufula Motschulsky, see Meotachys rufula.] [Tachys sagax Casey, see Paratachys sagax.] [Tachys scitulus LeConte, see Paratachys scitulus.] [Tachys sequax LeConte, see Paratachys sequax.] [Tachys spadix Casey, see Paratachys spadix.] [Tachys squiresi Bates, see Meotachys scpiiresi.] [Tachys stritax Darlington, see Paratachijs stritax.] [Tachys subangulatus Bates, see Paratachys siibangulatus.] [Tachys subpunctatus Blatchley, see Elaphropus brunnicollis.] [Tachys subtropicus Casey, see Tachys pulchellus.] [Tachys sulcipennis Bates, see Meotachys sulcipennis.] [Tachys tantilla Motschulsky, see Polyderis tantilla.] [Tachys temporalis Casey, see Paratachys hyalinus] Tachys translucens Darlington 150 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 Tachijs translucens Darlington, 1934:123. Holotype, a male, in MCZ, No. 22484. Type-locality: Boqueron, Cuba. [Tachys trechiformis Hayward, see Elaphropus conjugens.] [Tachys trechoides Csiki, see Elaphropus conjugens.] [Tachys trechulus Darlington, see Paratachtjs trechiihts.] [Tachys tritax Darlington, see Elaphropus tritax.] [Tachys umbripennis Chaudoir, see Paratachys umhripennis.] [Tachys unistriatus Casey, see Polyderis laevus.] [Tachys unistriolatus Csiki, see Polyderis laevus.] [Tachys ventricosus LeConte, see Paratachys ventricosus.] [Tachys vernilis Casey, see Paratachys vernilis.] Tachys virgo LeConte Tachys virgo LeConte, 1851:194. Lectotype, a female, here designated, in MCZ, No. 5567. Type-locality: San Diego, California. Tachys vittiger LeConte Tachys vittiger LeConte, 1851:193. Lectotype, a female, here designated, in MCZ, No. 5565. Type-locality: San Diego, California. Tachys marginellus LeConte, 18.51:193. Lectotype, a female, here designated, in MCZ, No. 5566. Type-locality: "Circa millia xxx a mare, flumen Colorado." Hay- ward (1900:222). Tachys ])icturatus Putzeys, 1874:119. Lectotype, a male, here designated, in IRSN. Type-locality: Antigua, West Indies. New synonymy. Tachys heehi Mutchler, 1924:223. Holotype, a male, in AMNH. Type-locality: South Seymour, Galapagos Islands. Erwin (1973:125). Tachys ensenade Mutchler, 1934:3. Holotype, a male, in AMNH. Type-locality: Ensenada, Puerto Rico. Erwin (1973:125). [Tachys vivax LeConte, see Elaphropus vivax.] [Tachys vorax LeConte, see Paratachys vorax.] [Tachys yunax Darlington, see Elaphropus yunax.] Tachyta Kirby Tachyta Kirby, 1837:56. Type-species: Tachyta picipes Kirby, 1837:56; by monotypy. T. picipes Kirby is a junior synonym of T. nana (Gyllenhal). Tachyta angulata Casey Tachyta angulata Casey, 1918:216. Lectotype, a male, here designated, in USNM, No. 46966. Type-locality: Bayfield, Wisconsin. [Tachyta arizonica Casey, see Tachyta nana.] [Tachyta autumnalis Bates, .see Tachymenis autumnalis.] [Tachyta californica Casey, see Tachyta nana.] [Tachyta collaris Casey, see Tachyta nana.] [Tachyta crucigera Bates, see Tacliymenis crucigera.] [Tachyta cucujoides Bates, see Tacliymenis cucujoides.] [Tachyta dibilicollis Casey, see Tachyta nana.] Tachyta falli (Hayward), new combination Tachys falli Hayward, 1900:199. Lectotype, here designated, a male, in MCZ, No. 7048. Type-locality: Siskiyou County, California. Tachyta hispaniolae (Darlington), new combination Tachys hispaniolae Darlington, 1934:77. Holotype, a female, in MCZ, No. 19499. Type-locality: Grande Rivere, Haiti. [Tachyta kirbyi Casey, see Tachyta nana.] PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 151 [Tachyta melania Bates, see Tachijmenis mclania.] Tachyta nana ( Gyllenlial ) Bembiditim nanum Gyllenhal, 1810:30. Lectotype, a male, in UMU, designated by Lindroth (1966:436). Tachyta nana (Gyllenhal). Bates, 1882:137. Bembidiiim inornattim Say, 1823:87. Neotype designated by Lindroth and Freitag (1969:339) in MCZ. Type-Iocahty: Asheville, North Carolina, designated by Lindroth (1966:436). Hay ward (1900:233) treated B. inornatiim as a junior synonym of T. nana as did Lindroth (1966:436). Tachyta picipes Kirby, 1834:56. Lectotype, a female, here designated in BMNH. Type-locality: "British America, latitude 50°." Lindroth (1953:176) reported that two specimens, glued on a card of one pin, were in BMNH. He did not indicate which was lectotype. During my visit in 1971 to BMNH I found that one specimen had become unglued and was lost. I reglued tlie remaining specimen and selected it as lectotype. LeConte (1848:471) and Casey (1918:218) treated T. picipes as a junior synonym of T. inornata. Hayward (1900:233) and Lindroth (1966:436) treated T. picipes as a junior synonym of T. nana. Tachys rivularis Motschulsky, 1846:8. Lectot>'pe, a female, here designated, in MMM. Type-locality: "California" as indicated on label of type "C." One para- lectotype is labelled "Sitka," and "California." Hayward (1900:233) and Lindrotli (1966:436) treated T. rivularis as a junior synonym of T. nana. Tachyta kirhyi Casey, 1918:216. Lectotype, a male, here selected, in USNM, No. 46967. Type-locality: Duluth, Minnesota. Lindroth (1966:436) treated T. kirhyi as a junior synonym of T. nana. Tachyta caUfornica Casey, 1918:219. Lectotype, a female, here designated, in USNM, No. 46970. Type-locality: Humboldt County, California. Lindroth ( 1966: 437) treated T. caUfornica as a junior synonym of T. nana. Tachyta collaris Casey, 1918:218. Lectotype, a male, here designated, in USNM, No. 46968. Type-locality: Washington (State). Lindroth (1966:436) treated T. collaris as a junior synonym of T. nana. Tachyta arizonica Casey, 1918:219. Lectotype, a male, here designated, in USNM, No. 46969. Type-locality: Arizona. New synonymy. Tachyta dehilicoUis Casey, 1918:219. Lectotype, a male, here designated, in USNM, No. 46971. Type-locality: Catskill Mountains, New York. Lindroth (1966:437) treated T. dehilicoUis as a junior synonym of T. nana. [Tachyta parallela Bates, see Tachyinenis parallela.] Tachyta parvicornis Notman Tachyta parvicornis Notman, 1922:100. Holotype, a male, in FDAG. Type- locality: St. Petersburg, Florida. [Tachyta picipes Kirby, see Tachyta nana.\ [Tachyta rivularis Motschulsky, see Tachyta nana.^ [Tachyta xanthura Bates, see Tachymcnis xanthiira.] [Tachyura Motschulsky, see Elaphropus.] [Trepanotachys Alluaud, see Elaphropus.] [Xystosomus Schaum, see Erwin (1973a).] ACKNOWI^EDCMENTS I heartily thank all of the curators listed herein under "Methods" for their cooperation in the study of type material; and my wife, LaVerne, who aided me 152 PROC. ENTOMOL. SOC. WASHINGTON, 76(2), JUNE, 1974 considerably during study at those museums. I also wish to thank Drs. George E. Ball, Paul D. Hurd, Jr., and Donald R. 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