POLYCHAETOUS ANNELIDS COLLECTED BY THEUNITED STATES FISHERIES STEAMER " ALBATROSS "DURING THE PHILIPPINE EXPEDITION OF 1907-1909. . By Ruth A. Hoagland, Assistant in Zoology, Vassar College, Poughkeepsie, Neiv York. INTRODUCTION.The collection of Annelids described here is extensive but in manycases poorly preserved. Specimens too mutilated for identificationare not mentioned in the following list; also, vials containing onlytubes have in some cases been discarded. In descriptions of newspecies I have endeavored to include drawings in sufficient numbersto supplement the verbal descriptions, thus, I believe, eliminatingthe errors in identification which often result from such descriptions.I am indebted to Prof. A. L. Treadwell, of Vassar College, for theuse of the collection.The following families are represented : Syllidae.Hesionidae.Aphroditidae.Nereidae.Nephthydidae.Amphinomidae.Leodicidae.Glyceridae.Spionidae. Cirratulidae.Terebellidae.Ampharetidae.Capitellidae.Opheliidae.Chlorhaemidae.Sabellidae.Hermellidae. DESCRIPTION OF SPECIES.Family SYLLIDAE.Genus MYRIANIDA Milne-Edwards.MYRIANIDA TERESETA, new species.Plate 46, figs. 1-3.Type.?Cat. No. 18942, U.S.N.M. A sexually mature female of114 somites (incomplete). Length, 17 mm. ; greatest width, not quite2 mm. cm G04 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Head with width about twice length (fig. 1). No pulps. Threemoderately long- tentacles showing no segmentation. Eyes four, red-dish; the posterior pair dorsal, the anterior pair lateral, with lensesnot seen from the dorsal surface. The stippling in figure 1 representsthe part of the anterior eves seen through the dorsal integument.First somite triangularly shaped dorsally, with apex directedanteriorly. Tentacular cirri four pairs, of which the more ventrallyplaced are short, the dorsally placed equaling the tentacles in length.Second somite rectangular, setigerous.Parapodia with blunt dorsal lobe (fig. 2). Dorsal cirrus heavy,not as attenuated as tentacles. Ventral cirrus lacking. Setae of twokinds. Dorsal long, slender, and tapering, extending beyond thedorsal cirrus. Ventral equally slender, shorter, and articulated.The terminal part is very minute; the basal part club-shaped andprovided with fine teeth (fig. 3).Color of alcoholic specimen brownish yellow.Collected at San Miguel Harbor, Ticao Island.Family HESIONIDAE.Genus HESIONE Savigny.HESIONE INTERTEXTA Grube.Ilcsione intertexta Grube (1878), p. 102, pi. 0. fig. 5.Collected at station D5355, Balabac Eight, North Balabac Strait. 44fathoms, coral and sand bottom.Genus IRMA Grube.IRMA ANGUSTIFRONS Grube.Irma angustifrons Grube (1878), p. 108, pi. 6, tig. 7; pi. 15, fig. 12.Collected at station D5149, Sirun Island. 10 fathoms, coral andshell bottom. Family APHRODITIDAE.Genus POLYNOE Savigny.POLYNOE PLATYCIRRUS Mcintosh.Polynoe platycirrus McIntosh (188.". i. p. 111. pi. :'., tiu- . 4; pi. L6, fig. 2.Collected at station D5518, Point Tagolo Light, Mindanao, 200fathoms, gray mud and Globigerina bottom, temperature 54.0?.POLYNOE POLYCHROMA Schmarda.Polynoe polychroma Schmarda (1861), p. 153, pi. 31.Collected at station D5355, Balabac Eight, North Balabac Strait,44 fathoms, coral and sand bottom. POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 605Genus IPHIONE Kinberg.IPHIONE FUSTIS, new species.Plate 46, figs. 4-8.Type.?Cat. No. 18941, U.S.N.M. Specimen young-. Length,5.2 mm. Greatest width, 5 mm. Body oval, narrowing anteriorlyand posteriorly. Number of somites, 26. Scales, 13 pairs.Head (fig. 4) 3 mm. longer than broad. Palps, 3.5 times us longas head, with longitudinal rows of papillae. Tentacular cirri, two oneach side, extending to end of palps: borne on basal portion one-halflength of palps. Tentacles, two, converging toward the median lin3anteriorly. Blunt anteriorly directed lobe in place of median ten-tacle. Eyes, two pairs, posterior pair on postero-lateral margin ofthe head. Anterior pair a short distance in front of these, but soplaced as to be scarcely seen from the dorsal surface.Eltyra (tig. 5) reniform, divided and subdivided by honeycombreticulum. Postero-lateral surface of dorsal side armed with cudgel-like spines. First elytra ovate.Parapoclia (fig. 6) small, not divided. Dorsal cirrus long, pro-vided with papillae, extending to ends of dorsal setae. Ventralcirrus extending to lateral edge of parapodium; provided withpapillae. Dorsal setae bundle very thick, arising anteriorly and justmedianly to ventral setae bundle.Setae of two kinds. Dorsal (fig. 7) long and slender with nakedtip. Subterminal portion provided with leaf-like appendages, gradu-ally increasing in size just below tip, but soon becoming uniform.Ventral (fig. 8) heavy, yellow, with fine irregular serrations andnaked, blunt tip.Collected at station D5141, Jolo Light, 29 fathoms, coral sandbottom. Paratypes collected at Tanguingui Island Light, 30 fathoms,fine sand bottom : North of Cebu ; Caguayan Point, off east coast LeyteIsland, S fathoms. Genus LAGISCA Malmgren.LAGISCA? HEXACTINELLIDAE Mcintosh.Lagisca f hexactinellidae McIntosh (1SS5), p. 94, pi. 4, fig. 5; pi. 12a, figs.14-16.Specimen 15 mm. in length. Missing parts identical with thosemissing in Mcintosh's specimen. No data given as to habitat ofform.Collected at station D5536, Apo Island, 279 fathoms, green mudbottom. 606 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.LAGISCA OCULESCENS, new species.Plate 47, figs. 1-7.Type.?Cat. No. 189-1;), U.S.N.M. Length of specimen, 25 mm.Number of somites, 38. Number of scales, 15. Greatest width, 7mm. Body attenuate posteriorly.Head (fig. 1) somewhat more than twice as long as broad, pro-longed anteriorly into minute lateral peaks. Median tentacle broken.Lateral tentacles attached below median, extending a short distancebeyond lateral lobes of head. Palps about three times as long ashead, longitudinally striped. Tentacular cirri, two pairs, reach-ing two-thirds of length of palps, borne on long basal portion. Eyes,two pairs, completely coalesced, forming roughly S -shaped markingson the dorsal surface of the head.Elytra (fig. 2) roughly ovate, with ruffling edge; crowded into al-most vertical position posteriorly by the pressure of the dorsalsetae. Median posterior area of elytron covered with ornate golden-brown spines (fig. 3).Parapodia (fig. 4) with noto- and neuro-podia, each drawn out intobluntly pointed processes laterally. Dorsal cirri long, sharply at-tenuated at end, borne on basal portion. Ventral cirri small andshort.Setae of three kinds; all light yellow. Dorsal (fig. 5) stout, withblunt naked tip and provided with minute serrations throughout re-mainder of length. Ventral two kinds: many (fig. 6) slender, biden-tate, provided with long barb-like teeth; a few (fig. 7) biden-tate, and provided with needle-like serrations.Type either from Jolo Anchorage, Jolo, or from Kopoposang Light,Macassar Strait, 400 fathoms hard bottom.Genus PANTHALIS Kinberg.PANTHALIS MELANONOTUS Grube.Panthalis melanonotus Grube (1878), p. 4S, pi. 4, fig. 1.One specimen of this species was found. The first seven pairs ofelytra were lacking, so that it was impossible to determine to whatextent they had overlapped. It agreed in all respects with Grube'sdescription, except that it possessed small paired tentacles situatedimmediately beneath the ommatophores. Number of somites, 90.Collected at station D5209, Taratara Island, 20 fathoms, green mudbottom. PANTHALIS ADUMBRATA, new species.Plate 46, figs. 9-14.Type.?Cat. No. 18944, U.S.N.M. Length of specimen 48 mm.,incomplete. Length of a complete paratype 63 mm. Number ofsomites, 53 ; scales, 24 pairs. Width, 12 mm. POLYCHAETOUS ANNELIDS FKOM PHILIPPINE SEAS. 607Head (fig. 9) with length (including peduncles) about threetimes the width. Palps somewhat less than twice as long as entirehead, tapering at end, faintly papillose. Tentacular cirri, two oneach side, borne on long basal portion, extending three-fourths oflength of palp. Median tentacle slender, borne on short basal por-tion, extending slightly beyond peduncles. Paired tentacles present,equal in length to the median tentacle, but not seen from the dorsalsurface. Eyes, two pairs; anterior large, reddish, and borne onpeduncles; posterior small, gray, and situated dorsally equidistantfrom base of peduncles and median tentacle.Dorsal surface of first seven somites conspicuously tuberculatedin type. Xot tuberculated in paratype.Eltrya (fig. 10) oval, grayish, with black edging medianly andposteriorly, giving the whole a shaded appearance.Parapodia (fig. 11) stout, with small antero-dorsal lobe sepa-rated by a deep cleft. Dorsal cirrus stout, reaching beyond body ofparapodium. Ventral cirrus small, not reaching to edge of para-podium.Setae of three kinds. Dorsal long, slender, provided with hair-like points along the terminal portion (fig. 12) ; subterminal portionslightly enlarged. Middle setae (fig. 13) heavy, yellow, bluntlypointed terminally and provided with a group of fine needle-liketeeth just below the termination. Ventral setae (fig. 1-t) like thedorsal, strongly serrated along the enlarged subterminal portion,the serrations becoming smaller toward the tip. The setae did notcover the scales dorsally in any part of the body.Type collected at Dumurung Point, Masbate Shore, or TinaktaIsland. 10 fathoms, coral sand bottom. Paratypes collected at stationsD5157 and D5158, Tinakta Island, 18 fathoms, fine sand bottom.This species resembles Panthalis panamensis, Chamberlin.1 Thedifferences between the two species are the coloration of the ommato-phores or peduncles, the shape of the head, the absence in P. adum,-brata of the finer setae in the dorsal series and the absence in P.abumbrata of the lash-like process in the median setae. The last maybe due to breakage. Family NEREIDAE.Genus NEREIS Linnaeus.NEREIS MASALACENSIS Grube.Nereis {Lycoris) masalacensis Grube ilsisi p. 75, pi. .">. tig. 4.Collected at Varadero Bay and at station D5146, Sulade Island, 24fathoms, coral sand and shell bottom. ? ^^OlO, p. 86, pi. 11, fig. 4-8; pi. 2, fig. 1-6. 608 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.NEREIS ZONATA Malmgren.Neries zonata Mai/mrgen, Fauvel (1914), p. 177, pi. 14, figs. 1-17.Epitokous form with paragnaths coalesced.Collected at station D5149, Siruii Island, 10 fathoms, coral andshell bottom. NEREIS (LEPTONEREIS) INERMIS, new species.Plate 47, figs. 8-12.Type.?Cat. No. 18947, U.S.N.M. An incomplete specimen of 30somites. Length, 16 mm.; greatest width, just behind head. 5 mm.Head (fig. 8) 6-angled, with length equal to greatest width. Palpsmore than twice as long as head, with ends distorted and unequalbecause of poor preservation. Tentacles extending three-fourths oflength of palps, borne on anteriorly directed lobes of head. Tenta-cular cirri, four pairs, the longest extending posteriorly as far as thetwelfth setigerous somite. Eyes, four pairs, all provided with lenses,situated in the posterior region of the head. Anterior pair largerwith louses directed antero-laterally ; posterior pair nearer the midline, with lenses directed dorsally. Proboscis without armature ofany kind.Parapodia varying slightly, the change being gradual antero-posterior^-. Typical anterior parapodium (fig. 9) divided into notoand neuro podia. Notopodium divided into two lobes, the aciculabeing in the ventral one. Dorsal cirrus arising median to base ofdorsal lobe and extending beyond it. Neuropodium divided intotwo lobes, the dorsal of which is subdivided for a short distance, andcontains acicula. Ventral cirrus short, and arising medianly andventrally to ventral lobe. Posterior parapodium (fig. 10) with sameparts. Dorsal cirrus greatly elongated. Dorsal lobe of notopodiumshortened. Ventral lobe greatly increased. Ventral cirrus elon-gated.Setae from anterior parapodium of setose variet}'. First variety,setose seta (fig. 11) occurring in dorsal and ventral bundles. Bladefinely serrated. Second variety, setose setae (fig. 12) occurring inventral bundle. Blade finely but deeply serrated. Setae of posteriorparapodia essentially the same as to form, but more slender.Collected at station D5346, Cliff Island, 7 fathoms, mud bottom.NEREIS (HETERONEREIS) CAERULEIS, new species.Plate 47, figs. 13-16; plate 48, figs. 1-4.Type.?Cut. No. 18948. U.S.N.M. Specimen, 90 mm. in length,incomplete posteriorly. Greatest width. 10 mm. Number of so- POLYCHAETOUS AXXELIDS FROM PHILIPPINE SEAS. 609 mites. 167. Color, grayish, with marine blue mid-dorsal stripe.Light refractive spot just median to dorsal lobe of parapodium oneach somite; most conspicuous on heteronereid somites. Ventralsurface milky white.Head (pi. 47, fig. 13) iridescent. Length somewhat less than twicebreadth. The figure shows the head in a flattened condition forpurposes of comparison. In the specimen the head was bent directlyventrally along a line just in front of the posterior eyes. Palps,two, the same length as the head; provided with terminal articlesnot seeen in the figure. Tentacles short and bluntly pointed. Ten-tacular cirri, four pairs, the longest pair slightly exceeding thebreadth of the peristomium. Eyes, two pairs; posterior pair small,provided with lenses and situated nearer the mid line than the an-terior; anterior pair large, provided with lenses and directed lat-erally.As the pharynx was not extruded it is represented diagrammati-cally (pi. 47, figs. 14, 15). Paragnath formula as follows: I, twosmall groups; II, absent; III, three groups, the central one the larg-est ; IV, crescent-shaped group with heavier teeth anteriorly; V, threegroups roughly triangular in shape with teeth in longitudinal rowsand heavier teeth anteriorly; VI, single row of heavy black teeth;VII, zigzag group across ventral side; VIII, gradually decreasingcontinuation of VI.First 28 pairs of parapodia in the ordinary nereid condition (pi.47. fig. 16). Notopodium subdivided into three lobes, the dorsal cir-rus situated on the most dorsal of these and extending to the limitof the notopodium laterally. Middle and ventral lobes pigmentedwith brown laterally. Acicula passing to base of ventral lobe. Neu-ropodium subdivided into three lobes, with acicula passing to base ofdorsal lobe. Middle lobe shorter and pigmented ; ventral lobe stillshorter and bearing ventral cirrus. Setae bundle on dorsal lobe.Twenty-ninth and following parapodia in heteronereid condition (pi.48, fig. 1). Notopodium subdivided into three lobes: the dorsal largeand flat bearing a short cirrus subterminally and a large finger-likelobe ventrally; middle short and bearing setae: ventral lobe interme-diate in size. Neuropodium subdivided into three lobes: the dorsalpointed and provided with acicula and seta bundle; the middle re-sembling the ventral lobe of the notopodium; the ventral flat andfan shaped, bearing a small ventral cirrus and provided dorso-anteriorlv with a vascularized area. Extra lobe, large and faintlybordered with pink borne posteriorly by neuropodium. Margins ofall lobes provided with papillae.Setae on heteronereid parapodium of two kinds, the most abundantof the large natatory type (pi. 48, fig. 2) with one edge finely ser- 610 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. rated. Setose type rare (pi. 48, fig. 3). Setae of thirteenth para-podium of two kinds, the most abundant of the falcate type (pi. 48 yfig. 4) with short terminal portion without serrations. Setose typerare. Similar to those of heteronereid parapodium but with shorterterminal blade.Type collected from Limbe Strait and paratopes from LeyteSound, Port Dupon.Family NEPHTHYDIDAE.Genus NEPHTHYS Cuvier.NEPHTHYS MIRASETIS, new species.Plate 48, figs. 5-S.Type.?Cat. No. 18950, U.S.N.M. A complete specimen, 45 mm.in length, including extruded proboscis. Width, 4 mm., not includ-ing setae. Number of somites, 79, the last nine greatly reduced insize and terminating in a single anal cirrus.Head (fig. 5) square, with rounded corners. Posterior areafaintly marked with grayish oblong spots. Tentacles conical; sub-tentacles similar but longer. Proboscis set with numerous rows ofpapillae, gradually decreasing in size posteriorly. Not more thannine in a row in type specimen. Mouth a dorso-ventral slit sur-rounded by distal papillae.Parapodia (fig. 6) divided into noto- and neuro-podia. Dorsallamella of notopodium moderate in size. Gill large and curved,,borne on posterior face of notopodium. Dorsal cirrus simple, aris-ing near base of gill. Neuropodium provided with small simplegill dorsally. Ventral cirrus conical, not reaching beyond para-podium. Ventral lamella not prominent anteriorly, gradually in-creasing to slightly larger dimensions posteriorly.Setae of three kinds. Most abundant simple non-serrated setae ofcapillary type. Barred setae (fig. 7) present, at base of setae bundlein most parapodia. Bidentate setae (fig. 8) with extra serrationspresent at base of setae bundle in a few parapodia.Collected at station D5161, Tinakta Island, 16 fathoms, fine sandand black specks bottom.Family AMPHINOMIDAE.Genus AMPHINOME Brugiere..AMPHINOME ROSTRATA Pallas.Amphinome rostrata Pallas, Mcintosh (18S5), p. 21, pi. 1, fig. 7.Collected at station D5332, Apo Light on "driftwood at surface."' POLYCHAETOUS ANNELIDS FROAE PHILIPPINE SEAS. 611Genus CHLOEIA Savigny.CHLOEIA FLAVA Savigny.Chloeia fiava Savigny, Grube (1878), p. 10.Two specimens, one of which is a young form previously describedby Grube (1874) as ('hloeia ceylonica.Large specimen collected at station Do 136, Jolo Light, 22 fathoms,sand and shell bottom; another from Jolo Anchorage, Jolo, electriclight, March 5, 1908: and a small specimen collected at Opol, Min-danao Island. Genus EURYTHOE Kinberg.EURYTHOE PACIFICA Kir.bcig.Eurythoe pacifica Kinbeeg, Mcintosh (1885), p. -7. pi. 2, figs. 3-4.Collected at station D5147, Sulade Island, 21 fathoms, coarse sandand shell bottom. Genus EUPHROSYNE Savigny.EUPHROSYNE TRIPARTITA, new species.Plate 48, figs. 9-12.Type.?Cat. No. 18951, U.S.N.M. Length, 15 mm. Elliptical inform, tapering evenly at both ends ; 9 mm. in greatest width. Dorsalbare area. 3 mm. in greatest width?i. e., one-third the width of body.Number of somites. 37.Caruncle (fig. 9) extending to middle of fifth somite, consisting ofmedian vertical crest and horizontal portion thickened laterally,giving the whole a three-lobed appearance. Median tentacle shortand thick, with posterior eye spots at its base. Antennae short andsmall, situated just above the anterior eye spots; not seen from thedorsal surface. Mouth bounded posteriorly by fourth somite. Palpslarge and ovate, their broader posterior margins reaching the fourthsomite.Parapodia with heavy setae bundle ventrally. Ventral cirrus aris-ing immediately posterior to setae bundle, so as to appear to emergefrom it. Dorsal cirrus short, not extending beyond branchiae. Lat-eral cirrus between second and third branchiae, extending beyondthem in length. Branchiae, eight or nine on each side, all ramosewith trefoil termination to each branchlet (fig. 10).Ventral setae (fig. 11) heavy, bidentate, without serrations. Dor-sal setae (fig. 12) cleft, with heavy serrations within the cleft.Collected at station D5250, Linao Point, Gulf of Davao, 23 fathoms,coral and sand bottom.Paratype.?Locality not recorded. 612 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Genus HERMODICE Kinberg.HERMODICE DISTINCTA, new species.Piute 48. figs. 13-15.Type.?Cat. No. L8953, U.S.N.M. Specimen large and well pre-served. Length,' 145 mm.; breadth, 10 mm., with gradual narrow-ing throughout last 10 somites. Number of somites, 91. Bodyrectangular in section, with dorso- ventral flattening throughout lastsomites. Dorsal surface dull white, irregularly streaked with bluishgray. Ventral surface dull white with median longitudinal stripeof bluish gray. Anus in last somite, dorsal, surrounded by elevatedfold.Caruncle (fig. 13) triangular in shape, with apex reaching as faras fourth somite posteriorly. Composed of a central, brownish, ver-tical lamella with broad anterior end between the eyes, and lateralvertical lamellae (10 on each side), paired and decreasing posteriorly.Dorsal two-thirds of lateral lamellae corrugated anteriorly andposteriorly.Eyes (fig. 13) four pairs, large, reddish, and provided with lenses.Posterior pair directed dorso-laterally ; anterior pair directed ven-tro-laterally. Median tentacle arising between posterior eyes; some-what more than half as long as caruncle.Oral lobe provided with paired superior and inferior tentacles,somewhat shorter than the median tentacle. Mouth longitudinal.extending to edge of fifth somite posteriorly.Parapodia (fig. 14) divided into dorsal and ventral parts. Dorsalsetae bundle borne on stout darkly pigmented lobe, also bearing-dorsal cirrus. Gill, large and bush-like, situated just posterior todorsal lobe. Ventral lobe pale, bearing ventral cirrus and largeventral setae bundle.Dorsal setae of two kinds. First variety (fig. 15) rare, simple,slender, with tip finely serrated. Second variety abundant, simple,smooth, considerably longer and more slender than first variety.Ventral setae of same character. Serrated setae slightly heavier thanthose in dorsal bundle.Collected at Opol, Mindanao Island.Genus NOTOPYGOS Grube.NOTOPYGUS HISPIDA, new species.Plate 48, fig. 16; plate 40, figs. 1-3.Type.?Cat. No. 18954, U.S.N.M. Length, 27 mm. ; greatest width.16 mm. Number of somites, 31. Body elliptical, with prominentwhite setae shading to Nile green posteriorly in paratype. Body a POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. l>13dull brown. Anus situated dorsally between twentieth and twenty-first somites. Terminal cirri short and stout.Head (pi. 48, fig. 16) rounded. Tentacles three, of equal length,the median extending posteriorly for a short distance over thecaruncle. Tentacular cirri two, arising at base of first somite.Eyes, two pairs; most posterior pair situated on each side of medianportion of caruncle: anterior pair scarcely seen from the dorsalsurface. Caruncle large, extending to anterior border of seventhsomite. Composed of a middle vertical plicated crest and two hori-zontal plicated portions. Mouth a longitudinal slit surrounded byoral lobe and extending to anterior edge of third somite.Parapodia (pi. 49, fig. 1) divided into dorsal and ventral lobes.Dorsal cirri two. The more lateral jointed and borne on a basalportion emerging from the dorsal lobe with the dorsal setae bundle.More median arising near base of gill and extending for short dis-tance beyond gill. Ventral cirrus borne on ventral lobe just belowsetae bundle. Gills palmate in form, beginning on fifth somite andsituated just median to dorsal lobe of parapodium.Dorsal setae of two kinds?simple tapering variety (pi. 49, fig. 2)and smooth bifid variety. Ventral setae all smooth bifid (pi. 49,fig. 3).Port Maricabau, anchorage, electric light.Paratype obtained from station D5249, Laming Point, Gulf ofDavao, 23 fathoms, coral and sand bottom.Family LEODICIDAE.Genus LEODICE Savigny.LEODICE (EUNICE) COLLARIS Ehrenberg.Eunice collaris Ehrenberg, Grube (1S78) p. 158, pi. 0, fig. :;.Specimens collected at station D5165, Observation Island, 9 fath-oms, coral bottom. Small specimens collected at station D5157.Tinakta Island, 18 fathoms, fine sand bottom.LEODICE (EUNICE) APKRODITOIS (Pallas).Eunice aphroditois (Pallas) Grube, 1.87S, p. 14G.Collected in tide pool at Batan Island and at Verde del Sur Island,Palawan 8-10 feet, coral, gravel, and sand bottom.LEODICE (EUNICE) MAGELLANICA Mcintosh.Eunice magellanica McIntosh (1885), p. 265, pi. 37, figs. 12-15.Specimen collected at station D5589, Mabul Island, 260 fathoms,fine gray sand and gray mud bottom, temperature 45.7?. 614 BULLETIN" 100, UNITED STATES NATIONAL MUSEUM.LEODICE (EUNICE) MICROPRION Maicnzcllcr.Eunice microprion MAKENiELLEE (IS79), p. 135 (sep. i?. 'ID, pi. 5, fig. 1.Specimens collected at station D5149, Sirun Island, 10 fathoms,coral and shell bottom and station D5148, Sirun Island, 17 fathoms,(dial sand bottom; station D5411, Lauis Point Light, 145 fathoms,green mud bottom, temperature 55.2? ; station D5641, Kalono Point,39 fathoms, sand and shell bottom; station D5280, Malavatuan Island,193 fathoms, gray sand bottom, temperature 49.6? ; station D5523,Point Tagolo Light, 182 fathoms, Globigerina and sand bottom,temperature 54.3? ; station D5519, Point Tagolo Light, 230 fathoms,temperature 52.3? ; station D5589, Mabul Island, 260 fathoms, fine graysand and gray mud bottom, temperature 45.7? ; and station D5536,Apo Island, 279 fathoms, green mud bottom, temperature 53.5?.Several young specimens of this species were found, differingfrom Marenzeller's description of the adult worm in having asofter, paler jaw apparatus and fewer gills. Specimens collected atstation D5249, Laming Point, 23 fathoms, coral and sand bottom;station D5146, Sulade Island, 24 fathoms, coral sand and shell bot-tom; and station L5355, Balabao Light, 44 fathoms, coral and sandbottom. LEODICE LEVIBRANCHIA, new species.Plate 50, figs. 1-8.Type?Cat. No. 19018, U.S.N.M. Specimen, 100 mm. in length;10 mm. in width anteriorly, gradually decreasing to 5 mm. pos-teriorly. Anal cirri lacking. Number of somites, about 105 ; about20 in the middle covered with fragment of tube.Head (fig. 1) provided with five tentacles, the three median onesof the same length (about as long as first three somites). Two lat-eral tentacles of equal length, being two-thirds as long as mediantentacle. Prostomium prominent and bilobed. Eyes roughly tri-angular in shape, situated at base of lateral tentacles. Peristomiumor first somite broad and smooth. Second somite about one-thirdas long as the first, and provided with short tentacular cirri. Thirdsomite provided with parapodia.Dental appartus (fig. 2) dark brown. Maxillae jointed posteriorlyand notched for muscle attachment. Curvature moderate. Surfacesmooth. Dental plates large, deeply notched posteriorly for muscleattachment. Each provided with seven large teeth, with irregularityin shape of last two. Lateral accessory plates about two-thirdslength of dental plates, bearing 10 teeth each. Unpaired plate ofright side finely toothed. Mandibles (fig. 3) brown, with clear whitedental plates ventrally.Anterior parapodia (fig. 4) with long dorsal cirrus and largeblunt ventral lobe.No hooks; acicula ending in blunt points. POLYCHAETOTJS ANNELIDS FROM PHILIPPINE SEAS. 615Gills beginning at about fiftieth somite. The poor preservationmade this almost impossible to determine. Gill a simple three-lobedstructure (fig. 5). Differentiation gradually lost until on ninetiethparapodium gill is a flattened, knob-like structure.Setae of three kinds. Heavy, pale yellow, compound setae (fig. G)ventrally. Simple capillary type (fig. 7) dorsally. Pectinate type(fig. 8) just below dorsal cirrus.Type collected at station D5348, Point Tabonan, Palawan Passage, -37.") fathoms, coral and sand bottom.LEODICE ARTICULATA, new species.Plate 50, figs. 9-12.This is not Eunice articulata Ehlers (1887), which has been shownto be synonymous with Leodice long'wirrata Webster, the latter namehaving precedence.Type.?Cat. No. 18955, U.S.N.M. A young, well-preserved speci-men, 57 mm. in length, 5.5 mm. wide anteriorly, tapering graduallyposteriorly. Anal cirri two, consisting of five articulations. Numberof somites, 107.Head (fig. 9) provided with five tentacles, so articulated as to givea beaded appearance. Median tentacle longest, reaching back toanterior border of eighth setigerous somite. Intermediate tentaclesreaching to anterior border of fifth setigerous somite. Lateral tenta-cles reaching fifth setigerous somite. Tentacular cirri similarlyarticulated, extending slightly beyond anterior edge of peristomium.Eyes round, in usual situation.As the specimens, both type and paratype, were }?oung, the jaw ap-paratus (fig. 10) was pale in color and soft in texture. Maxillae withshort basal joint, grooved dorsally for muscle attachment. Terminaljoint long, with slight curvature. Dental plates long and narrow,provided with eight to nine brown teeth. Lateral plates short, withnine small brown teeth. Eight unpaired plate with about seven smallteeth. Mandibles present, with light brown basal part and whitedental plate. On account of their softness they disintegrated uponbeing touched, thus making it impossible to determine their structure.Gills beginning as single filament on dorsal cirrus of fifth parapo-dium, gradually increasing to six and seven filaments toward middleof body (fig. 11), continuing to within seven somites of end of body,but gradually reduced to two filaments posteriorly. Dorsal cirrisharply articulated, with three or four joints terminally (fig. 11),and long, smooth base. Ventral cirri short, with cushion-like ventralportion.Setae of two kinds. Ventral compound (fig. 12) with bidentate.terminal portion covered by wing, and shaft finely serrated distallv. <)1G BULLETIN LOO, UNITED STATES NATIONAL MUSEUM.Dorsal setae of simple capillary variety. Acicula light yellow incolor, with blunt termination.Type collected at station D5159, Tinakta Island. 10 fathoms, coralsand bottom, and paratype (poorly preserved), at station D5205,Caguayan Point, off Leyte Csland, 8 fathoms.LEODICE ACCRESCENS, new species.Plate 50, figs. 13-16; plate 51, figs. 1-2.Type.?Cat. No. L8956, U.S.N.M. A large incomplete specimen,L50 mm. in length; width, 9 mm., uniform throughout. Number ofsomites, 289. Anal cirri lacking.Head (pi. 50, fig. 13) provided with rive smooth tentacles, themedian slightly larger than the intermediate, and intermediateslightly longer than lateral. Eyes small and irregular, situated justmedian to base of lateral tentacles. Prostomium deeply notched,with lobes slightly shorter than lateral tentacles. Peristomium orfirst somite broad and smooth. Stout tentacular cirri on secondsomite. Parapodia on third.Dental apparatus (pi. 50, fig. 1-1) dark brown. Maxillae with com-paratively long basal joint. Terminal joint sickle-shaped, withprominence for articulation with great dental plate. Right dentalplate with four large round teeth; left with three similar teeth andirregular surface posteriorly. Anterior lateral plates small andfinely toothed. Posterior lateral plates small and smooth. Man-dibles (pi. 50, fig. 16) heavy. Posterior part light brown. Dentalplates clear white and recurved dorsally on lateral side.Anterior parapodia provided with moderately long dorsal cirrusand cushion-like ventral cirrus. No gills. Gills begin at irregularintervals in region of eightieth somite, as small knob-like processesat base of dorsal cirri (pi. 51, fig. 1). Three acicula, all ending inblunt points. Posteriorly gill increases in length (pi. 51, fig. 2),extending almost to mid-dorsal line. Dorsal cirrus greatly reduced.Third aciculum lost.Setae of two kinds. Ventral compound (pi. 50, fig. 15), with bifidterminal portion, finely serrated shield, and serrated basal shaft.Doffcal setae of simple, capillary form.LEODICE ACCRESCENS, new species, young.The only differences between this form and the adult specimens arethe first appearance of the gills in the neighborhood of the one-hundredth somite (a point posterior to that in the adult), and thefewer number of acicula. Here there are two acicula to a para-podium anteriority and one posteriorly.Collected at station D5148, Jolo Light, Jolo, 17 fathoms, coral sandbottom, and station I).~>142. Sirun Island. '21 fathoms, coral sand and.shell bottom. POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 617Genus LUMBRINEREIS Blainville.LUMBRINEREIS BIFURCATA Mcintosh.Lumbrinereis (Lumbriconereis) bifurcata McIntosh (1885), i>. 241, pi. 36,figs. 10, 11, 12.Collected at station D5100, Corregidor Light, off Luzon, 35 fathoms.gray sand bottom.LUMBRINEREIS HETEROPODA Marenzeller.Lumbriconereis heteropoda Marenzeller (1879), ]>. 138, (sep. p. 30), pi.5, fig. 4: ill. 6 (fig. 1).Collected at Batan Island " Electric Light."LUMBRINEREIS JAPONICA Marenzeller.Lumbriconereis japonica Mabenzelleb (1879), p. 137, (sep. p. 29), pi. 5rfig. 3.Collected at station D5536, Apo Island, 279 fathoms, green mudbottom, temperature 53.5?.Genus ONUPHIS Audouin and Milne-Edwards.ONUPHIS (NOTHRIA) WILLEMOESII Mcintosh.Onuphis (Nothria) willemoesU McIntosh (1885), p. 322, pi. 41, tigs. 4-10.Collected at station D5394, Panalangan Point, Talajit Island, 153fathoms, green mud bottom.Genus MARPHYSA Quatrefages.MARPHYSA DIGITIBRANCHIA, new species.Plate 49, figs. 4-14.Type.?Cat. No. 18958, U.S.N.M. A small specimen, incompleteposteriorly. Length, 20 mm.; width, 2 mm., including parapodia.Number of somites, 80.Head (fig. 4) with five tentacles, median unpaired and interme-diate paired of equal length, reaching to edge of prostomium. Lat-eral pair arising anteriorly to intermediate and equal to two-thirds oftheir length.. Eyes dark brown, small, in usual position. Peristo-mium of two segments, equaling in total length the greatest lengthof the prostomium. No tentacular cirri.Jaws (fig. 5) light brown, touched with dark brown at certainpoints. Maxillae borne on long basal portion; curvature slight.Great dental plates with five and six large teeth. Median unpairedshort, with five or six teeth and irregular surface posteriorly. Proxi-mal paired, similar to unpaired. Distal paired, simple dark brown158326?20? 2 018 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.plates. Mandibles (fig. 6) frail, dark brown, with lighter dentalplate marked by rows of concentric striations.trills beginning on twentieth parapodium as a single filament atbase of large dorsal cirrus. Increasing rapidly to several filaments,the greatest number being- five posteriorly (fig. 8).Anterior parapodia (fig. 7) with large blunt ventral cirrus andlarge conical dorsal cirrus. Three acicula, two dark brown, onelight; all with blunt terminations. Dorsal setae tuft composed ofsimple capillary setae (fig. 9). Ventral setae tuft composed of threetypes. First variety (fig. 10), compound with long pointed termina-tion. Second variety (fig. 11), compound with shorter pointedtermination. Third variety (fig. 12), compound with bidentate,protected termination.Posterior parapodia (fig. S) with small ventral cirrus and moreslender dorsal cirrus. Gill, arising from base of dorsal cirrus, sosituated as to resemble the digits of a hand. Two setae tufts, thedorsal composed of simple capillary (fig. 9), the ventral of simplecapillary and compound (fig. 10). Acicula three; one dark brownwith blunt ending, situated between the setae tufts (fig. 13) ; twobidentate (fig. 14), with shield, situated in ventral half of para-podium.Collected from station D5301, China Sea, near Hongkong, surfacetemperature 84?. Genus RHAMPHOBRACHIUM Ehlers.RHAMPHOBRACHIUM PACIFICA, new species.Plate 49, figs. 15-23.Type.?Cat. No. 18959, U.S.N.M. An incomplete specimen, 40 mm.in length ; width 12 mm. anteriorly, decreasing to 8 mm. posteriorly.Number of somites, 76. Color dull gray with purple head.Head (fig. 15) provided with seven tentacles, the median anteriorpair or sustentacula being globose. Antero-lateral pair 3 mm. inlength, including basal joint. Postero-lateral pair 3.5 mm. in-cluding basal joint. Median unpaired tentacle broken. Tentacularcirri two,' borne on anterior edge of peristomium, scarcely reachinganterior border of head.Jaws (fig. 16) brownish lavender. Maxillae borne on basal piece;curvature moderate. Deeply notched posteriorly and ventrally formuscle attachment. Great dental plates notched in same manner.Left provided with nine teeth and irregular notch posteriorly ; rightwith five large teeth. Unpaired plate long, with six large teeth. ^Lateral anterior paired plates dissimilar in shape, with seven and ?eight teeth. Mandibles (fig. 17) light brown, with white dentalplate anteriorly. POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 619Parapodia of first three somites lengthened and drawn forward oneach side of head. Ehlers (1887) figures two long hooks to each ofthese parapodia. The Pacific form has an irregular number of hooksextruded. Upon dissection it was found that these parapodia con-tained from 18 to 20 retracted hooks. Most of them were broken.Figure 18 shows the distal end of a complete hook. Dorsal cirri longon first three parapodia, resembling tentacles in form and size. Mod-erately long on fourth; gradually decreasing to tenth. Gills ap-pearing at base of dorsal cirrus on eleventh parapodium as single,heavy, brown process. Ventral cirri reduced to transversely elon-gated elevations on ventral surface of somite. Gills (fig. 16) rapidlyincreasing to four and five processes. Dorsal cirrus small and sub-ordinated, bearing a small ventral process.Acicula of two varieties. Two (fig. 20) light 3Tellow with blunttermination situated in midst of setae tuft. Varying number ofsecond type (fig. 23) with bidentate, protected termination, situatedventral to blunt variety.Setae of two varieties. Dorsal setae (fig. 21) chisel-shaped. Middlesetae (fig. 22) simple capillary, with slight indication of wing.Type collected at station D5656, Olang Point, Basa Island, 484fathoms, gray mud bottom, temperature 41.2?.There is in the collection a decolorized specimen of this species,which, however, differs from the specimen described in the in-creased number of acicula, which may be as many as five in the an-terior parapodia. The form is 44 mm. in length, incomplete. The re-tractor muscles of the hooks, with hooks attached, may be seen pro-truding for 9 mm. posteriorly, showing that the hooks are 50 mm.long.Specimen collected at station D5348, Point Tabonan, Palawan Pas-sage, 375 fathoms, coral and sand bottom, temperature 56.4?.Family GLYCERIDAE.Genus GLYCERA Savigny.GLYCERA NANA Johnson.Glycera nana Johnson (1901) p. 411, pi. 10, fig. 103.Very small specimen from San Miguel Harbor, Ticao Island. Sim-ilar but poorly preserved specimen from station D5149, Sirun Island,10 fathoms, coral and shell bottom.Fifth setigerous somite similar in lamellae and type of setae, butwith ventral setae tuft particularly large. Sixth somite similar tofifth.Also collected at station D5209, Taratara Island. 20 fathoms, greenmud bottom. 620 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.GLYCERA POSTEROBRANCHIA, new species.Plate 51, tigs. 3-8.Type.?Cat. No. 18960, U.S.N.M. An incomplete specimen, 75mm. in length, not including extruded proboscis. Width, 3 mm. an-teriorly, gradually increasing to 5 mm. posteriorly. Length ofpharynx, 8 mm. Number of somites, 90; terminal portion lost.Color of specimen, light brown. Dorsal surface marked by brownlongitudinal line. Mid-ventral line, characterized by longitudinalflattened area, 0.5 mm. in width. Somites two-ringed, the rings beingof equal circumference throughout.Head (fig. 3) 2.5 mm. in length, or equal in length to first eightsomites. Number of rings in head not distinguishable. Four smallpapillae at end. Extruded proboscis large, equaling the first 37somites in length. Cuticle covered with two kinds of papillae. Mi-nute sucker-like type covering whole surface. Large, blunt, conicaltype on proximal end. Jaws (fig. 4) with lateral appendage formuscle attachment.Parapodia gradually increasing in size and length posteriorly.Anterior parapodia (fig. 5") with long, conical dorsal and ventrallobes. Dorsal cirrus a rounded tubercle. Ventral cirrus similar inshape to dorsal lobe of ventral division. Posterior parapodia (fig.0) elongate, divided into one dorsal and two ventral rami, the ventrallobe of the ventral ramus equaling the dorsal ramus in length. Ven-tral cirrus similar in shape to dorsal lobe of ventral ramus. Dorsalcirrus a small pointed tubercle. Gills beginning on twenty-fifthsomite as small knobs at dorsal base of parapodia lateral to dorsalcirrus, gradually increasing (fig. 6) until they appear as long rugose,finger-like processes.Setae of two kinds. Dorsal (fig. 7), simple capillary with finelyserrate edge. Ventral (fig. 8), compound with finely serrated blade.Collected at station D5375, Tayabas Light, Marinduque Island, 107fathoms, green mud bottom.Family SPIONIDAE.Genus AONIDES Claparede.AONIDES DIVERAPODA, new species.Plate .11. figs. 0-12.Two specimens, one with tentacular cirri missing. Both well pre-served anteriorly. Greatest width, 3 mm. The perfect one is the type,Cat. No. 18961, U.S.N.M.Prostomium (fig. 9) blunt anteriorly, extending forward overmouth ; prolonged posteriorly as" long, sinuous nuchal ridge as far as POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 621 anterior border of third setigerous somite. Nuchal or unpaired cir-rus prominent, arising anterior to nuchal ridge. Peristomiumforming two lateral lobes, one on each side of the mouth, reachingbeyond prostomium in expansion, but not showing from the dorsalsurface in contraction. Tentacular cirri attached at each side ofprostomium at base of peristomial lobes; 10 mm. in length?that is,a little more than three times greatest width of body.First setigerous somite (fig. 9) with two dorsal conical cirri anddorsal' setae tuft of simple capillary setae. Ventral cirrus lamelli-form. Ventral setae tuft fan-shaped, composed of single row ofheavy, simple setae of two kinds?long, tapering, oar-like setae ar-ranged alternately with shorter, cylindrical, blunt setae.Second setigerous somite with dorsal setae tuft of pale, .fine,capillary setae. Ventral tuft of very heavy, dark-brown setae(fig. 10) in a row similar to ventral tuft of first setigerous somite,but with only three or four (curved) capillary setae. Dorsalcirrus lacking. Dorsal lamella pointed, with apex directed dorso-posteriorly. Ventral lamella rounded, beneath ventral setae tuft.Third setigerous somite with dorsal lamella similar to but lesspointed than that of second setigerous somite. Ventral lamella equalin size and form to dorsal lamella. Dorsal setae tuft, composed ofsimple capillary setae. Ventral tuft composed of similar setae ven-trally, but of heavier, spinous setae dorsally (fig. 11).Fourth setigerous somite with dorsal and ventral lamellae similarto preceding. Dorsal setae simple capillary. Ventral setae tuftcomposed of simple capillary setae ventrally and curved, spinoussetae (fig. 12) dorsally, differing from spinous setae in precedingsomite in size and curvature.Fifth setigerous somite similar in lamellae and type of setae, butwith ventral setae tuft particularly large. Sixth somite similar tofifth.Specimen collected at station D5209, Taratara Island, 20 fathoms,green mud bottom. Family CIRRATULIDAE.Genus CIRRATULUS Lamarck.CIRRATULUS ZEBUENSIS Mcintosh. Cirratulus zebuensis McIntosh (1885), p. 384.Capillary setae very finely serrated. Hooks absent anteriorly,present in middle and posterior regions.Specimen collected from station D5304, China Sea near Hongkong,34 fathoms, blue mud bottom. 622 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Genus AUDOUINIA Quatrefages.AUDOUINIA POLYTRICHA Schmarda.Cirratulus polytricM Schmabda (1861), p. 58, pi. 27, fig. 214.Audouinia polytrichia Schmarda, Ehlers (1901), p. 266. ? Gbavieb (1907),pi. 10.Specimen collected at station D5760, Tinakta Island. 12 fathoms,sand bottom. Family TEREBELLIDAE.Genus POLYMNIA Malmgren.POLYMNIA CONGRUENS Marenzeller.Polymnia congrucns Marenzeller (1884), p. 207 (sep. p. ID, pi. 2, fig. :;.A large complete specimen agreeing in character of gills, setae ?and uncini with Marenzeller's specimen, but with tentacles intact,forming a large tangled mass equal to two-thirds the length of thebody. Tube also present, composed of Foraminifera shells, etc.,adhering to a very fragile membrane.Collected at Xasugbu, Luzon Eeef.Genus PISTA Malmgren.PISTA FASC1ATA Marenzeller.Pista fasciata Marenzeller (1884), p. 202 (sop. p. (J), pi. 1, fig. I.Terebella (Phyzelia) fasciata Eheenberg, Gnibe (1869).Using the interpretation of P. fasciata as given by Marenzeller(1884) and Mcintosh (1885) one specimen in the collection is re-ferred to this species. As only one branchial process (anteriorright) remained attached to the specimen, nothing can be said as to(he comparative size of these organs. The form of the body and thestructure of the uncini agreed with the descriptions given by Maren-zeller and Mcintosh.Collected at station D5536, Apo Island, 279 fathoms, green mudbottom, temperature 53.5?.Genus TEREBELLA Linnaeus.TEREBELLA PARVABRANCHIATA Treadwell.Terebella parva-branchiata Treadwell (1906)", p. 1175, fig. 71.Using the uncini as diagnostic character, this form is referred tothe above species. Although in very poor condition, the specimenpossesses three pairs of gills (with manner of branching as in7'. parvabranchiata) , thus verifying TreadwelFs remarks regardingthe Hawaiian form. The tentacles were too badly mutilated fordescription. POLYCHAETOTJS ANNELIDS FROM PHILIPPINE SEAS. 623Collected at station D5536, Apo Island, 279 fathoms, green mudbottom, temperature 53.5?.TEREBELLA (LANICE), species.Fragmentary. Identification based upon tube and uncini.Collected at station D5589, Mabul Island, 260 fathoms, fine graysand, gray mud bottom, temperature 45.7?.TEREBELLA (LOIMIA) VARIEGATA Ehrenberg Grube.TereoeUa variegata Ehbenberg, Grube (1878), p. 227-, pi. 13, fig. ?">.Tentacles missing.Collected at Makasser Island.TEREBELLA (LOIMIA) MONTAGUI Grube.Terebella montagui Grube (1878), p. 224, pi. 12, nix. 3,Loimia montagui Marenzeller (1884), p. 205 (sep. p. 9), pi. 2. fig. 1.A fragmentary specimen of this species, having no tentacles andonly two abdominal somites, was found in the collection. It agreedwith Grube's description of the species in having six-toothed unciniconsistently throughout the body. No trace was found of the sev-enth small tooth described by Marenzeller. Gills as figured byMarenzeller.Collected at station D5157, Tinakta Island, 18 fathoms, fine sandand shell bottom. LOIMIA, species.Large form having seven-toothed uncini. As the specimen wasincomplete?that is, the tentacles were lacking?it seemed unwise todescribe it as a new species.Collected at station D5157, Tinakta Island. 18 fathoms, line sandand shell bottom. Family AMPHARETIDAE.Genus AMPHICTEIS Grube.AMPHICTEIS PHILIPPINARUM Grube.Amphicteis philippinarum Grube (1878), p. 207, pi. 11. fig. 7.Specimen fragmentary but possessing all four branchial processes.The longest of these is 10 mm., or equal in length to the first ninesetigerous somites.Collected at station D5609, Binang Unang Island. 1092 fathoms,green mud bottom, temperature, 36.3?. 624 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Genus MELINNA Malmgren.MELINNA DU3ITA, new species.Plate 51, figs. 13-16.Type.?Cat. No. 18957, U.S.N.M. Fragmentary but possessing im-portant diagnostic characters. Sixteen somites present. Length, ex-clusive of gills and tentacles, 15 mm.; greatest width (across thirdsomite), 7 mm.Prostomium directed anteriorly and slightly ventrally, ending infolded upper lip. Tentacles of two kinds. Posterior (figs. 13-14)six in number, arising together from the dossal surface of the pros-tomium just behind the upper lip. Greatest length of a completeposterior tentacle, 15 mm. Those tentacles are deeply grooved alongone side?a condition not easily seen because of coiling. Anteriortentacles (fig. 13) with diameter equal to one-third that of posteriortentacles, arising in two groups of seven on each side of upper lip:varying in length from 3 to 7 mm."Buccal segment" or lower lip (fig. 13) largely covered by fol-lowing somite, hut showing as an oval pad just ventral to the mouthopening. Dorso-lateral extremities of lower lip arising immediatelyin front of the origin of the gills.Next four somites forming a collar-like structure with promi-nently developed lateral region extending obliquely from ventralto dorsal surface. Free edge of first somite lying immediatelybeneath the lowTer lip. First two somites marked ventrally (fig. 13)by row of fine setae (fig. 16). Third somite with similar setae ven-trally, and delicate tuft of similar but larger capillary setae dorsally.Fourth somite similar to third, but with prominent seta tuft dor-sally (fig. 14). Third somite plainly continuous dorsally (fig. 14),forming an inconspicuous or else strongly retracted post-branchialridge. No trace of the hooks figured by Marenzeller (1874) forM. adriatica was found.Gills stout, tapering, and curved distally (two are broken in fig.14) ; eight in number, arising from the second and third somites.Most anterior gills situated internally on second somite. Othergills situated externally on second and third somites.Pinnulae beginning on fifth somite. Second and third pinnulaelarger than first, gradually decreasing until on the sixteenth somitethey occur as blunt, medianly directed processes. Dorsal setae sinepie capillary, unequal in length, borne on truncated, papillae-likeprocesses. Uncini (fig. 15) pectinate in form, with four large teethabove the ligament process.Tube composed of tough inner membrane and thick outer coatingof fine brown mud. Total diameter, 1-3 mm. Lumen, 5 mm. POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 625 only 16 setigerous somites are present, it is impossible to tellhow many there would be in a complete specimen. This form isdoubtfully placed in the genus MeUnna, a^s the presence of twokinds of tentacles suggests that it may belong to a new but similargenus. The present interpretation is based upon the marked re-semblance in form between this specimen and Marenzeller's M.adriatioa.Type collected at station D5513, Camp Overton Light, Mindanao,505 fathoms, gray mud and fine sand bottom, temperature 52.8?.Family CAPITELLIDAE.Genus NOTOMASTUS Sars.NOTOMASTUS LATERICEUS Sars.Wotomastus latericeus Sars. Pauvel (1014), p. 250, pi. 10, fig. 14: pi. 22,fig. 20.Specimen incomplete posteriorly. Differing slightly from Fauvel'sdescription in the length of the peristomium?a condition probablydue to differences in preservation. Proboscis not extruded.Collected at station Do 100, Corregidor Light, off Luzon, 35 fathoms,gray sand bottom. Family OPHELIIDAE.Genus AMMOTRYPANE Rathke.AMMOTRYPANE AULOGASTER Rathke.Amnwtrypane aulogaster Rathke, Fauvel (1914), p. 243, pi. 22, figs. 5-7.Collected at station D5178, Point Origon. 73 fathoms, fine sandbottom. Family CHLORHAEMIDAE.Genus STYLAROIDES Delle Chiaji.STYLAROIDES, species.Fragmentary specimen collected at station D5207, Badian Island,35 fathoms, green mud and sand bottom.STYLAROIDES ATENTACULA, new species.Plate 52, figs. 1-4.Type.?Cat. No. 18962, U.S.N.M. Specimen, 70 mm. in length:width anteriorly, 3 mm.; greatest width (through middle region), 7mm.; width posteriorly, 5 mm. As the post-middle region of thebody is distorted by drying, it is impossible to determine how farposteriorly the broad region extends. 626 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Intersegmental grooves indistinct anteriorly, but more conspicuousposteriorly. Cuticle covered with papillae covered with fine silt inanterior and middle regions of the body. No attempt leas been madein the figure to represent this condition.Apparently everted proboscis-like structure (fig. 1), consisting ofheavy basal portion and narrower distal portion, freely open at theend, extending from the month opening. Distal end ragged aroundopening. Epidermis of entire structure thrown into fine longitudi-nal folds.First six somites provided with long capillary setae (figs. 1-2).Ventral setae beginning on third somite (in this specimen). Ab-sence of anterior ventral tufts may be due to breaking. Setae notclear in middle region. Posterior somites provided with small tuftsof heavy, gold-colored dorsal setae (fig. 3) of the cross striated type.Ventral setae (fig. 4) long, slender, and attenuated, also of the crossstriated type. Heavier setae appear dorsally on the thirty-first fromthe last somite. They are all broken off short in this specimen.The absence of tentacles suggested the name of S. atentaada, butas breakage seems to have occurred in all parts of the body this may-be erroneous.Type collected at station D5140, Bagacay Point, between Cebn andLeyte, 385 fathoms, green mud bottom.Family SABELLIDAE.Genus HYPSICOMUS Grube.HYPSICOMUS PHAEOTAENIA Schmarda.Sabella pliaeotaenia Schmarda (1861), p. 35, pi. 2'2', fig. SS.Hypsicomus pliaeotaenia Mabenzeller (1884), p. 212 (sep. p. 16), pi. 3,fig. 3. Genus SABELLA Linnaeus.SABELLA (BRANCHIOMMA) ACROPHTI5ALMOS Grube, variety.Plate 52, figs. 5-6.Sabella acrophthalmos Orube (1878), p. 258.Two specimens of this were taken similar to Grube's descriptionof S. acrophthalmos in all respects except the number of thoracicsomites. The two specimens differ somewhat with respect to thetermination of the gills. One has the ends strongly rolled over,as observed by Grube, and a very delicate purplish eye spot. Theother has the gills straightened out and provided with a large prom-inent eye spot, which is divided externally by the shaft of the rachis.[See Branchiomma vesiculosum Montagui as interpreted by Mcin-tosh (1885).] POLYCHAETOUS ANNELIDS FEOM PHILIPPINE SEA?. 627Avicula uncini with faintly serrated crest (fig. 5). Pennonedsetae comparatively large (fig. 6).Collected from reef opposite Cebu.SABELLA SECUSOLUTUS, new species.Plate 52, figs. 7-13.Type.?Cat. No. 19013, U.S.N.M. Incomplete posteriorly, only-four abdominal somites being present. Eight thoracic somites in-cluding collar fascicle, the eighth being, however, thoracic in charac-ter on the right side and abdominal on the left. Total length, notincluding gills, 11 mm. Length of gills, including basal portion,38 mm. Width of thorax, 5 mm.Collar low. widely separated on back (fig. 7) and split ventro-lateral^ (fig. 8). Ventral ends prolonged into lappets overlappingin the mid-line (fig. 8). Gills born on high basal portion, enlargingjust proximad to the base of the radioles (figs. 7-8). Radioles 26 oneach side joined by basal membrane 26 mm. in height. Membraneregion same color as rest of body?j'ellowish brown. Radioles lighterand irregularly banded with reddish brown pigment. Tips of ra-dioles naked for distance of 1.5 mm. No external appendages. Noe}res. Tentacles 4 mm. in length. Distal portion attenuated andpigmented reddish brown. The ventral surface of the head bears atwo-lcbed prominence which has been injured. It is merely indi-cated in figure 8.Capillary setae of thorax of two kinds. First variety (fig. 9)slender, without wing. Second variety (fig. 10) stout with prominent,subterminal wing. Thoracic uncini avicular with serrated crest andshort basal portion. Pennoned setae (fig. 12) simple, spatulate, with-out attenuated point. Capillary setae of abdominal region (fig. 13)similar to second variety of the thoracic region but with narrowerwing and longer point. Abdominal uncini similar to those of thorax.Type collected at station D5113, Sombrero Island. 159 fathoms.dark green mud bottom.Family HERMELLIDAE.Genus TETRERES Caullery.TETRERES TREADWELLI, new species.Plate 52, figs. 14-23.Type.?Cat. No. 18964, U.S.N.M. Specimen in good condition andcomplete anteriorly, but having only 2 mm. of the caudal region.Total length, 26 mm.; width, 4 mm.Cephalic region greatly developed, being 7 mm. in length vent rally.sloping down to 3 mm. in length dorsally. Peristomium deeply 628 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. split medianly, thus being divided into two peduncles (figs. 14-15),supporting on their anterior ends the opercular region, the latter con-sisting of two slightly concave elliptical areas, eacli surrounded bya single row of paleae. Paleae of the simple unserrated type, butof two varieties. Median paleae (fig 16). golden in color, resemblingin form the simple acicula of Leodicidae. Outer paleae (fig. IT)pale in color, with termination narrow and more attenuated than thatof the median paleae. Moderately long conical opercular papillae,11 on each side, situated external to the paleae. Opercular regiondiverging slightly dorsally, the posterior limits being provided withlarge, dark brown hooks opposite each other (fig. 14). Filiformbranchiae borne on median opposing faces of the peduncle-, and onseven oblique ridges on the ventro-lateral surface of the peduncles(figs. 15-18). (rill filaments, seven to eight on each ridge. Firstfour ridges on each side marked with distinct black pigment spot(fig. 18). Large median cirrus (fig. 14) deeply pigmented distally,arising dorsally between the hooks and extending dorso-ventrallybetween the peduncles for a distance of 4 mm. Mouth situated ven-trally; bounded dorsally by a pair of deeply grooved palps, 0.5 mm.in width, laterally by two large, flat, labial processes (fig. 15), andventrally by the lower lip. Prominent conical cirrus (fig. 15) situ-ated on each side lateral to labial processes, provided at the base witha fascicle of simple capillary setae (fig. 19).Somite II provided laterally with four conical cirri (fig. 18), themost dorsal being the longest and constituting the first of the dorsalbranchiae. Somites III, IV, V, VI bearing ventrally papilla-liketori, having two types of setae. Largest type (fig. 20) paddle-shapedwith frayed termination. Smaller type (fig. 21), simple capillarysetae, alternating with the paddle-shaped setae. Somites III. IV, V,and VI bearing dorsally stout rectangular pinnulae, with setae simi-lar to figure 20, but three times larger. Branchiae arising medianlyto bases of rectangular pinnulae.First nine abdominal somites bearing branchiae dorsally and un-cinigerous ruffle-like tori laterally, the latter ending ventrally in asmall free lobe overlying a ventral tubercle and small setae tuft.Uncini (fig. 22) pectinate with double row of seven teeth each.Ventral setae of two kinds?delicate capillary and slightly heavierspinous (fig. 23).Ventral tori decreasing gradually in size from the tenth throughthe seventeenth. Occurring as long stalked processes from the eigh-teenth through the twenty-fifth.Tube of fine white stones, Foraminifera shells and bits of red coralcemented together.Type collected at station D5109, Corregidor Light off Luzon. 10fathoms, coral bottom. POLYCHAETOUS ANNELIDS FROM PHILIPPINE SEAS. 629This species bears a close resemblance to T. nesiotes Chamberlin. 1The distinctive features are the presence of only seven branchialplates, the presence of gills on the inner surfaces of the pedunclesand the pointed character of the nuchal hooks.BIBLIOGRAPHY.Benham, W. B.1896. Polychaet Worms. The Cambridge Natural History. Vol. 2.1909, Report on the Polycbaeta of the subantaretic islands of New Zealand.Reprinted from " Subantarctic Islands of New Zealand." Article 11,pi. 9.Bush, K. J.1904. Tubicolous Annelids. Rep. Harriman Alaska Exped., vol. 2, pp. 169-298, pis. 21-44.Chamberlin, R. A".1919. The Annelida Polychaeta. Reports (in an Exploration oft the WesiCoasts of Mexico; Central and South America, and off the GalapagosIslands, in charge of Alexander Agassiz by the U. S. Fish Commissionsteamer Albatross during 1891, Lieut. Commander Z. L. Tanner, U. S. X.,commanding, No. 38. Reports on the Scientific Results of the Expe-dition to the Tropical Pacific in charge of Alexander Agassiz. by theU. S. Fish Commission steamer Albatross, from August, 1899, to March,1900, Commander Jefferson F. Moser, U. S. N., commanding, No. 20.Reports on the Scientific Results of the Expedition to the Eastern Tropi-cal Pacific, in Charge of Alexander Agassiz, by the U. S. Fish Commis-sion steamer Albatross, from October, 1904, to March, 1905, Lieut. Coinmander L. M. Garrett, U. S. N., commanding, No. 31. Memoirs of theMuseum of Comparative Zoology at Harvard University, Cambridge.Vol. 48, 514 pp., SO plates.Ehlers, E.1864-1869. Die Borstenwiirmer (Annelida chaetopoda) nach systematischenund anatomischen Untersuchungen dargestellt (Leipzig, Engelmann), 4and 20. 748 pp.. 24 pis.1887. Reports on the result of dredging under the direction of L. F. Pour-tales during the years 1S68-1870. and of Alexander Agassiz, in the Gulfof Mexico (1877-78) and in the Caribbean Sea (1S78-79) in the U. SCoast Survey steamer Blake. Report on Annelids. Memoirs Museum ofComparative Zoology, vol. 15, pp. 1-335, pis. 1-60.E S S KNBERG, CHE! STINE.1917. Description of some new species of Polynoidae from the coast of Cali-fornia. Univ. Calif. Pub. Zo61., vol. 18, pp. 3, 45-6Q, pis. 2-3.Fauvel, P.1896. Homologie des segments enterieurs des ampharetiens. Ann. Mag.Nat. Hist., ser. 6, vol. 18, pp. 470-473.1914. Resultats des campagnes scientifiques accomplies sur son yacht parAlbert ler. Prince Souverai.il de Monaco, publies sous sa direction avecle concmirs de M. Jules Richard. Fascicule 46. Annelides polychetesuon pelagiques provenanl des compagnes de L'Hirondelle et de La Prin-cesse Alice (1885-1910), 31 plates.GlRAVIEK, CH.1907. Annelides polychetes recueillis a Payta (Perou) par M. le Dr. Rivet.1919, p. 490, pi. 75, figs. 1-7. 630 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Grube. E.1878. Annulata Seniperiana. Beitrage zur Kenntniss der Annelidenfaunader Philippinen nach den von Herrn Prof. Semper rnitgebrachten Samm-lungen. Mem. Acad. Sci. St.-Petersbourg, ser. 7, vol. 25, no. 8, ix and300 pp., 15 pis.Johnson, H. P.1897. A preliminary account of the marine annelids of the Pacific Coast,with descriptions of new species. Proc. Calif. Acad. Sci., ser. 3, vol. 1.pp. 153-198, pis. 5-10.1901. The Polychaeta of the Puget Sound Region. Proc. Boston Soc. Nat.Hist., vol. 29, pp. 381-437, pis. 1-19.KlNBERG, J. G. H.1857. Annulata nova. Ofv. Yet. Akad. Forh.. Amphinoma, pp. 11-14.Marenzeller, E. von.1874. Zur Keuntnis der adriatischen Anneliden. Aus dem LXIX Bandder Sitzb. Akad. Wiss.1S79. Siidjapanische Anneliden. I. Denkschr. Akad. Wiss. Wien, Math.-Naturio. CI., vol. 41, pt. 2, pp. 109-154, pis. 1-6. Separate, pp. 1-4G.L884. Siidjapansche Anneliden. II. Denkschr. Akad. Wiss. Wien, Moth-Naturo. CI., vol. 49, pt. 2, pp. 197-224, pis. 1-1. Separate pp. 1-28.McIntosh, W. C.1885. Report on the Annelida Polychaeta collected by H. M. S. Challengerduring the years 1873-1876, Rep. Sci. Res. Challenger, Zoology, vol. 12 ; XXXVI and 554 pp., pis. 1-55 and la-39? and map.1900-OS-10. A monograph on the British Annelids. Parts I, II, and III.Polychaeta.Moore, J. P., and Bush, K. J.1904. Sabellidae and Serpulidae from Japan, with Descriptions of newspecies of Spirorbis. Proc. Acad. Nat. Sci., Philadelphia, pp. 157-179,pis. 11-12.Moore, .1. P.1903. Polychaeta from the coastal slope of Japan and from Kamtchatkaand Bering Sea. Proc. Acad. Nat. Sci. Philadelphia, vol. 55, pp. 401-490,pis. 23-27.1904. New Polychaeta from California. Idem. vol. 56, pp. 484-503. pis.37-38.1906. Additional new species of Polychaeta from the North Pacific Idem.vol. 58, pp. 217-260, pis. 10-12.1908?. Descriptions of new species of spioniform annelids. Idem. vol. 59,pp. 195-207, pis. 15-16.1908b. Some Polychaetous Annelids of the Northern Pacific Coast of NorthAmerica. Idem, vol. 60, pp. 321-364, (4) figs, in text.1909o-. Polychaetous Annelids from Monterey Bay and San Diego, Calif.,Idem, vol. 61, pp. 235-295, pis. 7-9.1909&. The Polychaetous Annelids dredged by the U. S. S. Albatross offthe coast of Southern California' in 1904. I. Syllidae, Sphaerodoridae,Hesionidae and I'hyllocidae. Idem, vol. 61, pp. 321-351, pis. 15-1(1.1910. Idem. II. Polynoidae, Aphroditidae, and Sigaleonidae. Idem. vol.62, pp. 328-402, pis. 28-33.1911. Idem. III. Euphrosynidae to Goniadidae. Idem, vol. 63, pp.234-318. pis. 15-21.QUATREFAGES, A.1865. Histoire naturelle des anneles marins et d'eau douce Paris. POLYCHAETOTJS ANTSTELIDS FROM PHILIPPINE SEAS. 631SCHMAEDA, L. K.1S61. Neue wirbellose Tluere. Erster Band. Turbellarien, Rotatories, undAnneliden. Zweite Hiilfto.Tbeadwell, A. L.1906. Polychaetous Annelids of the Hawaiian Islands collected by tliesteamer Albatross in 1902. Bull. U. S. Fish Oomm., vol. 23, pp. 1145-1181,SI figs, in text.1914. Polychaetous Annelids <>f the Pacific Coast in the collections of theZoological Museum of the University of California. New Syllidae fromSan Francisco Bay. Collected by the U. S. S. Albatross.- Univ. Calif.Pub. Zodl, vol. 13, pp. 8 and 9, pp. 175-238, pis. 11-12, 7 figs, in text.EXPLANATION OF PLATES.Plate 46.Myriankla tereseta.Fig. 1. Dorsal view of head X 15.2. Parapodium X 50. <__^3. Ventral seta X 475. Iphione fustis.4. Dorsal view of head X 30.5. Elytron X 23.6. Cirrus-bearing parapodium X 22.7. Terminal fifth of dorsal seta X 350.8. Terminal portion of ventral seta X 350.Panthalis adumbrata.9. Dorsal view of head X 15.10. Elytron X 10.11. Parapodium X 10.12. Terminal portion of dorsal seta X 350.13. Terminal portion of middle seta X 350.14. Ventral seta X 350. Plate 47.Lagisca oculescens.Fig. 1. Dorsal view of head X 14.2. Elytron X 10.3. Spike from median edge of elytron X 350. "4. Cirrus-bearing parapodium X 15.5. Terminal portion of dorsal seta X 350.6. Ventral seta of first type X 350.7. Ventral seta of second type X 350.Nereis (Leptonereis) inermis.S. Dorsal view of head X 20.9. Posterior view of right seventh parapodium X 25.10. Posterior view of light twenty-ninth parapodium X 25.11. Setose seta of first type from seventh parapodium X 350.12. Setose seta of second type from seventh parapodium X 350. 632 BULLETIN 100, UNITED STATES NATIONAL MUSEUM.Nereis (Heterone'reis) caeruleis.Fig. 13. Dorsal view of head X 13.l-l. Conventional dorsal view of pharynx X 10.15. Conventional ventral view of pharynx X 10.16. Thirteenth lefl parapodium X 25.Plate 48.Nereis (Hetcronereis) caeruleis.Fig. 1. Anterior view of fifty-second right parapodium X 16.u. Natatory seta from fifty-second right parapodium X 350.3. Setose seta from fifty-second right parapodium X 350.4. Falcate seta from thirteenth right parapodium X 350.Nephthys mirasetip. 5. DOrsal view of head and proboscis X 13.6. Posterior view of fifty-sixth parapodium X 26.7. Barred seta X 350.8. Bidentate serrated seta X 350.Euphrosyne tripartita. 9. Dorsal view of caruncle and tentacle X 26.lit. Typical gill X 30.11. Ventral seta X 350.12. Dorsal seta X 350. Hermodice distincta. !.">. Dorsal view of head and caruncle X 10.14. Anterior view of sixteenth right parapodium X 9.15. Dorsal seta X 350. Notopygus lii*i>i