Denes. see Set ber erememes Sas tranquillus, new species. Disk of propodeum shining; disk of scutellum with two polished spots.... 28 Mesothorax blue; disk of propodeum plicate (Colorado)....pudicus, new ae Mesothorax green; disk of propodeum coarsely rugose.....----- viridatus Lovell. Large, 7 mm. long; disk of propodeum rugose..........-----------+-+--+-- 30 Smallertmansncy. 2c tsctaen lesddan nce aseseadc apewdilti. ge eeee-Ed ¢ 32 Tegulae pale testaceous; mesothorax closely punctured (Texas). connexus Crawford. Tegulae reddened; mesothorax very coarsely punctured......-.---------- 31 Wings milky white; stigma honey color; flagellum yellow-testaceous beneath. albipennis Robertson. Wings not so; flagellum testaceous beneath........-- nymphaearum Robertson. Wings milky white; stigma and nervures honey color; mesothorax very coarsely punctured; disk of propodeum plicate (Colorado). lactineus, new specics. ONE ORSO er ocac cp oR Le Ne OH CATAL E AF RANG aoe ony guia seattle 33 Mesothorax opaque, microscopically tessellate, very closely punctured.... 34 Mesothorax shining, sparsely or delicately punctured........-------------- 37 Head and thorax golden green; disk of propodeum plicate (Virginia). callidus, new species. Head and thorax blue or blue-green, not golden......-.------------------ 35 Flagellum clear ferruginous; mandibles yellow; propodeum with discontin- UGUS plicae: "CVATgIIMA) ance Sree oe ca eae owe sa ete apertus, new species. Flagellum testaceous, yellow-testaceous beneath; mandibles dark......-.-- 36 Tegulae reddish; disk of propodeum plicate; pubescence of abdomen yellowish @Vireinia)} irra. sete: Jetedevre a. shausehe sae: genuinus, new species. Tegulae pale testaceous; disk of propodeum rugose; pubescence of abdomen MOtevie ll onmis liar ys Peete ee Ae, Scio ed eR NS lel tte hc versatus, Robertson. Mesothorax coarsely punctured...........----.--- 2-202 - eee eee teeter eee 38 Mesothorax delicately punctured ..........-.------ 22-502 e eee ee eee eee 40 Head and thorax Soke green; tip of clypeus and mandibles yellowish hexane) esirhs seas teed SS. Jost hit ony oa oped gy disparilis Crawford. eed orci lae | Ge Peet ee ee se Ff eee: sm ta, Biase sate OO Disk of propodeum strongly rugose, ae) rugae not nee . the disk (Connecticut) - teers aeamtee . basilicus, new species. Disk of Pronoun Saieee ule pie Cons ned to ihe disk. nevadensis Crawford. 10 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 65. 40. Very small, anterior wing about 3 mm. long ........-...-...--+----------- 41 Garger sute7nbure.. ae eerrinnarebine seer Reel cee - gees 41. Head and thorax an green; Tutelines black; dick of epiedeusa with plicae on base only, apex polished (Vera Cruz, Mexico) ...... exiguus Smith. Head and thorax blue; flagellum testaceous beneath............-...-----. 42 42. Disk of propodeum deep blue, short, plicate; knees and tarsi yellow (Vingimia) occas | de tls «dws setentir(s ies sete oat - hortensis Lovell. Disk of propodeum brilliant blue, pee, with fine, coe aie wrinkled plicae; legs entirely dark (New Mexico) ....-...-.-.--.. microlepoides Ellis. 43. Tegulae somewhat reddened; legs black; mandibles dark ................ 44 Tegulae very pale; knees and tarsi red; mandibles red ..........-.....-. 45 44. Flagellum testaceous beneath; face, mesothorax, scutellum and mesopleurae brassy (Colorado)! 0.5.2 2ovI2F 2s 20S OL eae mactus, new species. Flagellum hardly paler beneath; not thus brassy (Colorado). pensitus, new species. 45. (The following are very similar in size, color, punctation, etc.): Third joint of antennae somewhat longer than second ...............--..- 46 Third joint of antennae hardly or no longer than second ............-..--- 47 46. Disk of propodeum plicate (Colorado) ........-.-----.-- accentus, new species. Disk of propodeum rugose (New Mexico) ..-...--..---- incompletus Crawford. 47. Abdomen entirely black, punctured (Colorado) ..........-. mollis, new species. Abdomen with piliferous punctures only, apical margins of segments testAaceous Sik tke OEE SCN S o crate lates mre ete toyete tata elon efetela miele wate etaietar= 48 48. Mesothorax sparsely and delicately punctured; disk of propodeum plicate (New Mexico): =) 23022019 -2.0ho2. A Cela ae merosus, new species. Mesothorax more closely punctured; disk of propodeum rugose .........-. 49 49. Disk of propodeum crescentic, with irregularly anastomosing rugae reaching the apex; legs and abdomen brown (Virginia) -......- malinus, new species. Disk of propodeum long, rugae reaching the apex which is polished; abdomen and. legs black (iowa),.)3.52.5_ Qua Gosek. Poe cos insolitus, new species. DESCRIPTIONS OF NEW SPECIES. HALICTUS (CHLORALICTUS) OLIVARIUS, new species. Female.—About 8.5 mm. long; dark olive green; pubescence pale; facial quadrangle longer than broad; front closely punctured, the punctures becoming more scattered on the sides of the face; antennae brown, becoming bright ferruginous at the apex of the flagellum; orbits converging slightly below; clypeus black, coarsely punctured; supraclypeal area brassy, sparsely punctured. Mesothorax golden green, very closely punctured; parapsidal grooves quite indistinct; scutellum closely punctured; disk of propodeum appears rugose, but is covered with finely wrinkled anastomosing rugae making an irreg- ular reticulate surface; truncation well defined laterally; tegulae pale testaceous, impunctate. Abdomen ovate, without distinct hair bands, but with pale pubescence covering the segments; apical margins of segments testaceous. Wings yellowish, faintly dusky; anterior wing about 6 mm, long; stigma and nervures pale testaceous; basal nervure very strongly bent; third submarginal cell strongly contracted above, more than twice as long as second on marginal; second sub- marginal higher than broad, receiving first recurrent nervure very akt.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. hy near apex. Legs dark with dull whitish hairs; knees red; tarsi somewhat reddened; hind spur pectinate with five medium long obtuse spines. Habitat.—Jumbo Reservoir, 9 miles east of Crook, Colorado, August 12, 1921 (Sandhouse). One specimen. Type.—Cat., No. 26399, U.S.N.M. This species seems to be quite distinct and different from any other Chloralictus known to the writer. HALICTUS (CHLORALICTUS) ELLISIAE, new species.' Female.—About 5 mm. long; head and thorax dark olive green, abdomen black; pubescence dull white, rather sparse. Facial quad- rangle longer than broad; orbits converging slightly below; antennae dark brown; front very closely punctured; sides of face with coarser, deeper, more scattered punctures; supraclypeal area shining, sparsely punctured; lower two-thirds of clypeus black, with a few coarse punc- tures; mandibles black. Mesothorax microscopically lineolate and closely punctured; scutellum very closely punctured, two smooth spots on the disk; disk of propodeum without a distinct inclosing rim, microscopically reticulate between rugae; mesopleurae coarsely punc- tured; tegulae dark, punctured; truncation distinct, but not sharply defined laterally. Abdomen broadly ovate, the only punctures pilifer- ous; segments sparsely clothed with yellowish-white pubescence; apical margins of segments brownish, transversely lineolate. Anterior wing 3.5 mm. long; wings clear hyaline; stigma and nervures dark testa- ceous; second submarginal cell as broad as high at the base, but con- tracted above, receiving the first recurrent nervure near apex; third submarginal almost twice as long as second on marginal. Legs dark with yellowish-white pubescence; inner spur pectinate with four moderately long teeth. Habitat —Forest Hills, Massachusetts, August 5, 1911. Received from Dr. W. M. Wheeler. One specimen. Type.—Cat. No. 26400, U.S.N.M. Distinct from tegulariformis Crawford, from which it differs by the darker tegulae and stigma; broader head; darker flagellum; more closely punctured mesothorax; more robust species; distinct sculp- turing of disk of propodeum. From tegularis Robertson by the shining head and thorax; darker wings; tegulae darker, not reddish; darker flagellum; disk of pro- podeum not granular, but with fine plicae. From pseudotegularis Cockerell, which is a very small and slender species, with golden green mesothorax and scutellum, and with disk of propodeum granular. 5 Mrs. Ellis referred this specimen to hortensis Lovell, but the punctured tegulae seem to be distinct. The species was named for Mrs. Ellis. 12 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. From perparvus Ellis, which is very small and dark, with delicately punctured tegulae; and has a golden green mesothorax and the disk of the propodeum granular. HALICTUS (CHLORALICTUS) SEDI, new species. Female.—About 6 mm, long; dark greenish blue; pubescence dull white, rather sparse. Facial quadrangle longer than broad; sides of face, supraclypeal area, and upper portion of clypeus brassy green; front very closely punctured, the punctures becoming more scattered below; supraclypeal area and upper portion of clypeus with few deep punctures; lower part of clypeus black, without punctures; flagellum black, dark testaceous beneath. Mesothorax microscopically tessel- late, with delicate punctures; scutellum closely punctured, two pol- ished spots on the disk; disk of propodeum shining, with fine plicae on the lateral, and anastomosing rugae on the median portions, pol- ished at the apex; mesopleurae indistinctly punctured; tegulae testa- ceous, impunctate; truncation well defined laterally. Abdomen obovate, polished, very delicately punctured, without distinct hair bands, but segments sparsely covered with hairs; apical margins of segments testaceous. Anterior wing about 4.5mm, long; wings quite clear; stigma and nervures pale testaceous; second submarginal cell as broad as high, receiving the first recurrent nervure near the apex‘ almost equidistant with the third submarginal on marginal; subcostal nervure very dark, Legs dark with dull white pubescence; hind spur pectinate with four moderately long teeth. Habitat.—Boulder, Colorado: 1 specimen June 21, on Sedum steno- petalum (Cockerell); 1 specimen May 20 (M. Pope). Type.—Cat. No. 26401, U.S.N.M. Distinguished by the highly polished abdomen. HALICTUS (CHLORALICTUS) ACADEMICUS, new species. Female.—About 6 mm. long; dark blue-green; pubescence yellowish white. Facial quadrangle longer than broad; orbits converging slightly below; the only punctures on the face piliferous; antennae dark, flagellum ferruginous beneath; clypeus and supraclypeal area smooth and highly polished, without punctures, flat; lower half of clypeus black. Mesothorax shining, the only punctures piliferous; disk of propodeum rather long, microscopically tessellate, weakly plicate on the base only; truncation distinct laterally; tegulae very pale testaceous, impunctate. Abdomen obovate, without distinct hair bands, but the segments clothed with rather sparse pubescence; apical margins of segments testaceous. Wings faintly yellowish; anterior wing 4.2 mm. long; stigma and nervures pale testaceous; third submarginal cell subquadrate, a little longer than the second arr.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 18 on the marginal; second submarginal higher than broad, receiving the first recurrent nervure quite near the apex. Legs dark, quite densely pubescent; knees and tarsi red. Habitat.—Boulder, Colorado, May 14 (Irene Bleasdale). Type.—Cat. No, 26402, U.S.N.M. Differs from lazulis Ellis by the darker color; more weakly punc- tured mesothorax; smooth clypeus and supraclypeal area; sculptur- ing of disk of propodeum distinct. Distinguished by the very delicately punctured mesothorax, and the clypeus and supraclypeal area very flat and polished. HALICTUS (CHLORALICTUS) ACTINOSUS, new species. Female.—About 5.5-6 mm, long; golden or brassy green; pu- bescence yellowish white. Facial quadrangle about as long as broad; front and vertex very closely punctured, the punctures becoming more scattered on the sides of the face; supraclypeal area and upper half of clypeus shining golden green with a few coarse punctures; lower half of clypeus black; inner orbits converging below; antennae dark, the flagellum rufo-testaceous beneath. Mesothorax microscop- ically lineolate, very closely punctured; scutellum with deep punc- tures, two small polished spots on the disk; disk of propodeum coarsely granular with rather faint irregular rugae making a reticu- late surface, without an inclosing rim, but polished apically; mes- opleura irregularly punctured; truncation well defined laterally; tegulae very pale testaceous, impunctate. Abdomen obovate, impunctate; the segments clothed with dense pubescence; apical margins of segments pale testaceous. Wings faintly yellowish; ante- rior wing 4.5 mm, long; stigma and nervures pale testaceous; second submarginal cell almost as broad as long, and almost as long as the third on the marginal; third submarginal gently contracted above, first recurrent nervure joining the second transverso-cubital; sub- costa very dark. Legs dark with yellowish pubescence. Habitat.—California, labeled No. 846; collector and exact locality unknown. Type.—Cat. No. 26403, U.S.N.M. Differs: From vegans Cockerell in having a broader head; paler tegulae and wings; head and thorax green; sculpturing of disk of propodeum distinct. From floridanus Robertson by the broader head; clypeus and supraclypeal area distinctly brassy; paler hairs; head and thorax golden green; disk of propodeum not granular. From succinipennis Ellis by the broader head; more closely punc- tured head and thorax; shorter disk of propodeum with distinct sculpturing. 14 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL, 65. HALICTUS (CHLORALICTUS) LIGUANENSIS, new species. Female.—About 5 mm. long; head and thorax olive green; abdomen black; pubescence rather short and dull white. Facial quadrangle longer than broad; orbits converging slightly below; antennae entirely dark, the flagellum hardly paler beneath; face very delicately punc- tured, the punctures more scattered below and on the sides of the face; lower half of clypeus shining black with a few punctures; upper half of clypeus and supraclypeal area lineolate and sparsely punctured; mandibles reddish. Mesothorax microscopically lineolate, delicately punctured, the punctures more scattered on the disk; median and pa- rapsidal grooves distinct, but not deeply impressed; sculpturing of scutellum similar to that of the mesothorax, two polished spots on the disk; disk of propodeum without an inclosing rim, faintly tessellate with a few plicae at the base of the area; truncation distinct later- ally; tegulae reddish, impunctate. Abdomen obovate, shining, im- punctate; segments clothed with rather scant pubescence. Wings faintly dusky; anterior wing about 3.5 mm. long; stigma and nervures dark testaceous; second submarginal cell higher than broad, receiv- ing the first recurrent nervure near the apex; third submarginal a little longer than second on marginal. Legs dark with yellowish hairs; knees and tarsi somewhat reddened. Habitat.—Liguanea Plains, Jamaica, November-December 1911 (C. T. Brues). Type.—Cat. No. 26404, U.S.N.M. Mrs. Ellis referred this specimen with doubt to jamaicae, but it seems to be distinct. . Differs: From jamaicae Ellis by the darker tegulae; disk of pro- podeum not lineolate, and plicate at base only; scutellum with two polished spots on disk; face more sparsely punctured. From deceptor Ellis by the broader face; vertex with closer punc- tures; legs not entirely dark; mesothorax more sparsely punctured. HALICTUS (CHLORALICTUS) ADMIRANDUS, new species, Female.—About 5-5.5 mm, long; head and thorax blue-green; abdomen black; pubescence white, rather dense. Facial quadrangle longer than broad; orbits converging below; antennae brown- ferruginous, becoming ferruginous at the apex of the flagellum; face covered with moderately close hairs; front closely punctured, the punctures more sparse on the sides of the face; supraclypeal area and upper part of the clypeus blue-green, microscopically lineolate and delicately punctured; lower half of clypeus shining black, with few coarse punctures; mandibles faintly reddish. Thorax quite densely pubescent; mesothorax dull, microscopically tessellate, with quite close but shallow punctures; punctation of scutellum similar to that of the mesothorax, two punctureless spots on the disk; disk artT,19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 15 of propodeum without a distinct inclosing rim, shining, plicae extend- ing across the disk and reaching the apex; truncation clearly defined laterally; tegulae very pale,impunctate. Abdomen obovate, shining; segments 1-2 rather sparsely pubescent; segments 3-5 clothed with dense, appressed hairs; apical margins of segments testaceous. Wings clear; anterior wing about 3.5 mm. long; stigma and nervures honey color, except the costal nervure which is dark testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third submarginal little longer than second on marginal. Legs dark, covered with white hairs; knees and tarsi clear red; hind spur not visible. Habitat.— Woods Hole, Massachusetts (Eleth Cattell). Type.—Cat. No. 26405, U.S.N.M. HALICTUS (CHLORALICTUS) TENAX, new species. Female.—About 5.5—-6 mm. long; head and thorax dark blue-green; abdomen black; pubescence yellowish white, sparse. Facial quad- rangle longer than broad; orbits converging slightly below; antennae entirely dark; face shining dark blue; vertex closely punctured; front with a brassy tint, sparsely punctured; supraclypeal area and upper half of clypeus somewhat brassy, rather closely punc- tured; clypeus shining black below, with few coarse downward-open- ing punctures; apex of mandibles red. Mesothorax shining, micro- scopically lineolate; quite closely punctured, the punctures a lit- tle more scattered on the disk; scutellum closely punctured, two smooth spots on the disk, each of these spots has two very large punc- tures; disk of propodeum without an inclosing rim, smooth, shining, dark blue, with a few plicae at the base of the disk only; truncation well defined laterally; tegulae dark testaceous, impunctate. Abdo- men obovate, piceous, impunctate; segments 1—2 almost without hairs; segments 3-5 with sparse white hairs; apical margins of segments narrowly testaceous. Wings faintly dusky; anterior wing 4 mm. long; stigma and nervures testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal about one and one-half times as long as second on mar- ginal, Legs dark with yellowish white pubescence; hind spur pecti- nate with three moderately long teeth; tips of hind basitarsi and apical tarsi reddened. Habitat—Longs Peak Inn, Colorado, June 25, and August 13 (Cockerell). Three specimens. Type.—Cat. No. 26406, U.S.N.M. Differs from viridatulus Cockerell by the shining mesothorax with weak punctures, not lineolate; head, mesothorax, and propodeum more brilliant blue; disk of propodeum without such strong plicae. 16 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. HALICTUS (CHLORALICTUS) PACATUS, new species. Female.—About 6 mm, long; head and thorax dark green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging below; antennae dark, the flagellum scarcely paler beneath; front closely punctured; sides of face with shallow open punctures;. supraclypeal area and upper portion of clypeus microscopically lineo- late and coarsely punctured; lower half of clypeus shining black, with few coarse punctures. Mesothorax broad, microscopically tessellate, with moderately close, but coarse punctures evenly distributed over the surface; scutellum finely punctured, two polished spots on the disk; disk of propodeum without a distinct inclosing rim, microscopically tessellate, with few slightly wrinkled plicae reaching the apex; trun- cation well defined laterally; tegulae dark testaceous, impunctate. Abdomen obovate, impunctate; the first segment almost without hairs, the other segments sparsely clothed with short hairs. Wings somewhat dusky; anterior wing about 4.5 mm. long; stigma and nervures testaceous; second submarginal cell slightly higher than broad receiving the first recurrent nervure near the apex; third sub- marginal little longer than second on marginal. Legs dark with yel- lowish white hairs; hind spur pectinate with four moderately long teeth. Habitat.—Peaceful Valley, Colorado, 1919 (Cockerell). Two speci- mens. Type.—Cat. No. 26407, U.S.N.M. HALICTUS (CHLORALICTUS) ALIUS, new species. Female.—About 5-5.5 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle somewhat longer than broad; flagellum rufo-testaceous, paler beneath; front with rather close shallow punctures, the punctures deeper and more scattered on the sides of the face; supraclypeal area and upper half of clypeus delicately punctured; lower half of clypeus shining black, coarsely punctured; fringed with yellowish hairs; mandibles red. Thorax clothed with rather abundant pubescence; mesothorax shin- ing, with faint microscopic lineolations and rather close, shallow punctures; punctation of scutellum similar to that of the meso- thorax, two polished spots on the disk; disk of propodeum long, inclosed by a low rim, shining, microscopically tessellate, with faint, very irregularly anastomosing rugae; truncation distinct laterally; teculae very pale testaceous, impunctate. Abdomen ovate, impunc- tate; segments 1-2 shining, spersely pubescent; segments 3-5 clothed with dense subappressed hairs. Wings very clear; anterior wing 4.25 mm. long; stigma and nervures very pale testaceous; second submarginal cell considerably higher than broad, receiving first arT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 17 recurrent nervure near the apex; third submarginal subquadrate, little longer than the second on marginal. Legs dark with dull white hairs; knees, tips of tibiae, and tarsi pale rufo-testaceous; hind spur pectinate with four moderately long teeth. Habitat.—La Cueva, Organ Mountains, New Mexico, September 2, at flowers of Nuttallia multvflora (Townsend). Type.—Cat. No. 26408, U.S.N.M. HALICTUS (CHLORALICTUS) CADUCUS, new species, Female.—About 6.5 mm. long; head and thorax dark olive green; abdomen black; pubescence dull white. Facial quadrangle longer than broad; orbits converging slightly below; face with a bronze reflection, clothed with rather sparse pubescence; antennae dark, the flagellum becoming dark ferruginous at the apex; vertex very closely punctured; front with more scattered deep punctures; part of clypeus and supraclypeal area bronze green, sparsely punctured; lower half of clypeus shining black, with a few downward-opening punctures, fringed below with yellowish hairs; mandibles dark, reddish at the tips. Mesothorax brassy green, shining, with faint microsopic tessel- lations and scattered punctures; scutellum brassy green, delicately punctured on the anterior part, the punctures coarser posteriorly, two polished spots on the disk; disk of propodeum without a distinct inclosing rim, slightly elevated posteriorly, median portion of disk finely granular with a few anastomosing rugae, the lateral portions plicatulate, the plicae extending on to the sides of the propodeum; truncation distinct laterally; tegulae reddish testaceous, impunctate. Abdomen piceous, obovate; apical margins of segments testaceous; segments 1-2 shining, sparsely pubescent; segments 3-5, with appres- sed, dull white hairs. Wings clear yellowish; anterior wing 4.5 mm. long; stigma and nervures very pale testaceous; second submarginal cell almost as broad as long; first recurrent nervure joining second transverso-cubital; third submarginal sharply contracted above, about equidistant with the second on the marginal, Legs dark with dull white pubescence; hind spur pectinate with three teeth. Habitat —Santa Fe, New Mexico, October 3, at garden marigold No. 5620 (Cockerell). Type.—Cat. No. 26409, U.S.N.M. Differs: From versatus Robertson by the reddened tegulae; meso- thorax shining, with more scattered punctures; more slender species; face shining; more sparse pubescence; polished scutellum, From nevadensis Crawford by the larger size; more golden green face and mesothorax; more sparsely punctured mesothorax; disk of propodeum plicatulate. 18 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. HALICTUS (CHLORALICTUS) IMPAVIDUS, new species, Female.— About 5.5-6 mm. long; head and thorax olive green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging below; face covered with rather abundant white hairs; front with close but shallow punctures, the punctures more scattered on the sides of the face; supraclypeal area and upper half of clypeus with a few deep punctures; lower half of clypeus black, with very few coarse punctures, fringed with yellowish hairs; antennae dark brown, the flagellum dark ferruginous beneath. Mesothorax brassy green, shining, quite closely punctured; scutellum shining, the disk entirely covered with delicate punctures; disk of propodeum without an inclosing rim, the median portion with irregularly anasto- mosing rugae, the sides of the disk plicate; mesopleurae with coarse shallow punctures; truncation well defined laterally; tegulae very pale testaceous, impunctate. Abdomen obovate, impunctate; apical mar- gins of segments testaceous; segments 1-2 sparsely pubescent; seg- ments 3-5, with more abundant white hairs. Wings clear; anterior wing 4.25 mm. long; stigma and nervures pale testaceous; second submarginal cell broader at the base than it is high, but contracted above, receiving the first recurrent nervure very near the apex; third submarginal gently contracted above, about one and one-half times as long as second on the marginal. Legs dark with yellowish-white pubescence; knees and tarsi reddened; hind spur pectinate with three moderately long teeth. Hahitat.—California, labeled No. 903. Collector and exact local- ity unknown. Type.—Cat. No. 26410, U.S.N.M. HALICTUS (CHLORALICTUS) COMIS, new species. Female.—About 5-5.5 mm. long; head and thorax blue-green; ab- domen black; pubescence white. Facial quadrangle somewhat longer than broad; orbits converging slightly below; antennae dark reddish brown, becoming scarcely paler at the apex of the flagellum; face clothed with moderately dense short white hairs; front very closely punctured; supraclypeal area and upper one-third of clypeus micro- scopically tessellate and sparsely punctured; clypeus largely black, shining, with a few coarse punctures, fringed with yellowish hairs; mandibles dark red. Thorax closely covered with rather short white hairs; mesothorax opaque, microscopically tessellate with rather close, deep punctures; punctation of scutellum similar to that of the mesothorax; disk of propodeum crescentic, without an inclosing rim, microscopically tessellate between irregular rugae; truncation well defined laterally; tegulae pale testaceous, impunctate. Abdomen obovate, impunctate, sparsely pubescent; apical margins of segments aRT. 19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 19 brownish testaceous. Wings clear yellowish; anterior wing about 4 mm. long; stigma and nervures very pale testaceous; second sub- marginal cell higher than broad, gently contracted above; receiving first recurrent nervure very near the apex; third submarginal quite sharply contracted above, little longer than second on marginal, Legs dark brown, with dull white hairs; hind spur pectinate with three moderately long teeth; apical tarsi somewhat reddened. Haltat.—Las Cruces (College Farm), New Mexico, on Melilotus, No. 2914 (Cockerell). Type.—Cat. No. 26411, U.'S.N.M. HALICTUS (CHLORALICTUS) MERITUS, new species. Female.—About 5.5 mm. long; head and thorax dark green; abdo- men black; pubescence white, rather sparse. Facial quadrangle some- what longer than broad; orbits converging slightly below; antennae dark, the flagellum hardly paler beneath; face with quite close, shallow punctures; above, the punctures become more dense; supra- clypeal area and upper half of clypeus microscopically lineolate, sparsely punctured; lower half of clypeus black, very coarsely puns- tured, fringed with yellowish hairs. Mesothorax shining, microscop- ically lineolate, punctured, the punctures about twice the diameter of a puncture apart; scutellum similarly punctured, with two pointed spots on the disk; disk of propodeum shining dark blue, crescentic, without an inclosing rim, with coarse plicae not reaching the apex which is polished; truncation not sharply defined, but distinct laterally; tegulae red-testaceous, impunctate. Abdomen obovate, shining, impunctate; bases of segments with narrow bands of white appressed hair; apical margins of segments dark testaceous. Wings hyaline, faintly iridescent; anterior wing 4.25 mm. long; stigma and nervures rather pale testaceous; second submarginal higher than broad, receiving the first recurrent nervure quite near the apex; third submarginal very broad at the base, contracted above, about one and one-third times as long as second on the marginal. Legs black with yellowish hairs. Habitat.—Halfway House, Pikes Peak, Colorado, May 30, at flowers. Fragaria (Cockerell). Type.—Cat. No. 26412,U.S.N.M. HALICTUS (CHLORALICTUS) ARCANUS, new species. Female.—About 6 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging quite sharply below; face covered with rather sparse pubescence; antennae very dark brown, almost black, hardly paler beneath; front closely punctured; sides of face with scattered, outward opening punctures; supraclypeal area and upper half of clypeus with oy PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, 65. a brassy tinge, sparsely punctured; lower half of clypeus black, coarsely punctured, fringed with yellowish hairs; mandibles red. Thorax clothed with moderately dense white hairs, more abundant. on the sides; mesothorax shining, microscopically lineolate, the punc- tures about the diameter of a puncture apart; scutellum microscopi- cally tessellate, opaque, with deep punctures; disk of propodeum crescentic, polished posteriorly, rugae almost parallel on the lateral portions of disk, anastomosing medially; truncation not sharply defined but distinct laterally; tegulae red-testaceous, impunctate. Abdomen obovate, impunctate, without distinct hair bands, but segments cov- ered with white subappressed hairs; first abdominal segment punc- tured on the median portion, the second segment punctured on the base; segments 1-2 sparsely pubescent, Wings clear; anterior wing 4.5 mm, long; stigma and nervures pale testaceous; second submar- ginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal rather gently contracted above, about. one and one-half times as long as second on marginal, Legs black with dull white hairs; hind spur pectinate with four moderately long teeth. Habitat.—White Mountains, New Mexico, July 20, on flowers, Ver- bascum thapsus (C. H. T. Townsend). Type.—Cat. No. 26413, U.S.N.M. HALICTUS (CHLORALICTUS) LATUS, new species. Female.—About 6.5—7 mm. long; head and thorax dark olive green; abdomen black; pubescence yellowish white. Facial quadrangle about as broad as long; orbits converging slightly below; face clothed with moderately dense pubescence; front closely punctured, the punctures more scattered and indistinct below the antennae; sup- raclypeal area microscopically lineolate, with few deep punctures; clypeus produced little below the lower margins of the eyes, lower half shining black, with few coarse punctures, fringed with yellow- ish hairs. Thorax clothed with moderately abundant yellowish white hairs; mesothorax broad, shining, microscopically tessellate, with scattered shallow punctures; median and parapsidal grooves deeply impressed; scutellum closely and coarsely punctured, two polished spots on the disk; disk of propodeum crescentic, without an in- closing rim, shining, with coarse plicae extending to the posterior margin, median portion of disk slightly elevated posteriorly, and tes- sellate; truncation distinct laterally; tegulae rufo-testaceous, impunc- tate. Abdomen obovate, impunctate; segments 1-2 almost without pubescence, shining; segments 3-5 covered with subappressed yellow- ish hairs. Anterior wing about 5 mm. long; wings hyaline; stigma and nervures pale testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third agTt.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 2] submarginal sharply contracted above and little longer than second on the marginal. Legs black, with quite abundant yellowish hairs; hind spur pectinate with three moderately long teeth. Habitat.—Colorado Springs, Colorado, April 20, at flowers of willow (W. P. Cockerell). Type.—Cat. No, 26414, U.S.N.M. Distinguished from other Chloralictus by the broad head; and from unicus by the reddish tegulae, olive-green mesothorax, hind spur with three teeth, darker stigma and nervures. HALICTUS (CHLORALICTUS) UNICUS, new species. Female.—About 6.5 mm. long; head and thorax dark blue-green; abdomen black; pubescence largely dull white. Facial quadrangle about as broad as long; orbits converging below; face covered with moderately dense pubescence; front with close shallow punctures; sides of face and supraclypeal area microscopically lineolate, with deep scattered punctures; clypeus largely shining black, with few very coarse punctures, fringed with yellowish hairs; antennae dark, flagel- lum reddened beneath, especially apically. Thorax clothed with abundant white pubescence; mesothorax broad, microscopically line- olate, with coarse scattered punctures; scutellum sculptured similarly to the mesothorax, two large polished spots on the disk; disk of pro- podeum crescentic, without an inclosing rim, with few coarse plicae, plicae somewhat wrinkled, especially on the median portion; trun- cation distinct laterally; tegulae pale testaceous, impunctate. Ab- domen broadly obovate,impunctate; first abdominal segment as broad as second; segments 1-2 shining, almost without pubescence; seg- ments 3-5 clothed with dense subappressed yellowish white hairs. Anterior wing 5 mm. long; wings clear; stigma and nervures honey color; second submarginal cell higher than broad, scarcely contracted above, receiving the first recurrent nervure very near the apex; third submarginal very gently contracted above, about twice as long as second on marginal. Legs black, with dense dull white hairs; hind spur pectinate with four moderately long teeth. Habitat.—Seven miles east of Vinton, Iowa, June 29, 1922 (Sand- house). Type.—Cat. No. 26415, U.S.N.M. Kasily distinguished from other Chloralictus by the broad head, and from latus by the paler tegulae and nervures; blue-green mesothorax; hind spur with four teeth. HALICTUS (CHLORALICTUS) ABSIMILIS, new species. Female.—About 6 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle longer than broad; inner orbits converging below; front above the antennae with close 29 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. shallow punctures; sides of face, part of the clypeus and supracly- peal area microscopically lineolate, more sparsely punctured; lower part of clypeus black, shining, with a few coarse punctures; flagellum dark testaceous, paler beneath and at the apex. Thorax quite densely pubescent; mesothorax shining, microscopically lineolate, with mod- erately close, shallow punctures, the punctures closer at the extreme posterior and lateral margins; punctation of scutellum similar to that of the mesothorax, two large polished spots on the disk; disk of propodeum rather long, without a distinct inclosing rim, microscopi- cally tessellate, with more or less discontinuous plicae; truncation distinct laterally; tegulae very pale testaceous, impunctate. Abdo- men obovate, shining, impunctate; segments 1-2 with sparse dull white pubescence; segments 3-5 densely clothed with subappressed dull white hairs; apical margins of segments 3-4 testaceous. Ante- rior wing 4.5 mm. long; wings hyaline; stigma and nervures pale testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal subquad- rate, gently contracted above, little longer than the second on mar- ginal. Legs dark, with dull white hairs; knees and tarsi dark red; hind spur pectinate with four moderately long teeth. Habitat.—Sterling, Colorado, July 10, 1920, on dandelion (Taraxa- cum) (Sandhouse) Type.—Cat. No, 26416, U.S.N.M. HALICTUS (CHLORALICTUS) VINTONENSIS, new species. Female.—About 5 mm. long; head and thorax olive green; abdomen black; pubescence dull or yellowish white. Facial quadrangle dis- tinctly longer than broad; inner orbits converging gently below; face shining, clothed with quite abundant pubescence, rather closely and delicately punctured; supraclypeal area sparsely punctured; clypeus largely green, sparsely punctured, black below, fringed with yellowish hairs; antennae largely dark, flagellum dark testaceous beneath; mandibles red. Thorax shining with quite abundant pubescence; mesothorax smooth, with very delicate punctures; scutellum with disk largely polished, dull and delicately punctured at posterior mar- gin; disk of propodeum long, without a distinct inclosing rim, micro- scopically tessellate, with irregular rugae on basal portion only; truncation distinct laterally; tezulae very pale testaceous, impunctate. Abdomen ovate, shining, quite sparsely pubescent, impunctate; apical half of segments 1-2 with bronzen reflections; anterior wing 4.2 mm. long; wings hyaline; stigma and nervures pale testaceous; subcostal nervure very dark; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third submarginal hardly contracted above, almost twice as long as second art.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 28 on the marginal. Legs black, covered with dense yellowish pubes- cence; knees and tarsi clear red; hind spur pectinate with four mod- erately long teeth. Habitat.—Vinton, Iowa, June 23, 1922 (Sandhouse). Two speci- mens. Ty pe.—Cat. No. 26417, U.S.N.M. HALICTUS (CHLORALICTUS) GAUDIALIS, new species. Male.—About 4.5 mm. long; head and thorax brilliant blue; abdo- men black; pubescence pure white. Face clothed with dense pubes- cence; facial quadrangle longer than broad; inner orbits converging sharply below; antennae dark brown, flagellum yellow-testaceous beneath, second and third antennal joints of equal length; front closely punctured, the punctures becoming hardly more scattered below antennae and on supraclypeal area; clypeus largely black, produced about two-thirds its length below the eyes, coarsely punctured. Thorax slender, with moderately dense pubescence; mesothorax shin- ing, coarsely and closely punctured; scutellum and metathorax closely punctured; disk of propodeum crescentic, shining, with a low inclos- ing rim posteriorly, plicae radiating slightly, reaching the apex; mesopleurae coarsely punctured; sides of propodeum punctured; trun- cation distinct, but not sharply defined laterally; tegulae dark, opaque, with close and deep punctures. Abdomen ovate, black, bases of seg- ments clothed with fine white hairs, delicately punctured; apical margins of segments polished. Wings clear; anterior wing 3.5 mm. long; stigma and nervures testaceous; second submarginal cell twice as high as broad, receiving the first recurrent nervure very near the apex; third submarginal broad at the base, contracted about one-half above, almost twice as long as second on the marginal. Legs black, or very dark brown; tarsi paler brown; pubescence moderately dense. Habitat.—La Jolla, California, August (Cockerell). Two specimens. Type.—Cat. No. 26418, U.S.N.M. HALICTUS (CHLORALICTUS ) PAULULUS, new speceis. Male.—About 4 mm. long; head and thorax greenish blue; abdo- men black; pubescence white. Facial quadrangle distinctly longer than broad; orbits converging sharply below; face clothed with dense white hairs; flagellum brown, rufo-testaceous beneath, second and third antennal joints of equal length; front very closely punc- tured above the antennae, the punctures more scattered below; clypeus largely black, coarsely punctured. Thorax clothed with moderately abundant pubescence, the hairs longer on the sides; mesothorax shin- ing, with close, coarse punctures, the punctures about the diameter 24 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. of a puncture apart; median and parapsidal grooves indistinct; punc- tation of scutellum similar to that of the mesothorax; disk of pro- podeum crescentic, dull, finely roughened, rugose at the base only; mesopleurae punctate; truncation distinct laterally; tegulae dark, opaque, coarsely punctured. Abdomen ovate; without distinct hair bands, but segments clothed with quite sparse dull white hairs; apical margins of segments polished, dark testaceous. Wings yellowish; anterior wing 2.75 mm. long; stigma and nervures pale testaceous; second submarginal cell higher than broad, receiving the first recur- rent nervure near the apex; third submarginal about one and one-half times as long as the second on the marginal. Legs black, with rather sparse pubescence; tarsi reddish. Habitat.—Crook, Colorado, August 29, 1920 (Sandhouse). Type.—Cat. No. 26419, U.S.N.M. HALICTUS ( CHLORALICTUS ) EXALBIDUS, new species. Male.—About 5 mm. long; brilliant blue; pubescence pruinose, abundant. Facial quadrangle about as broad as long; face with long plumose hairs; orbits converging below; second and third antennal joints of equal length, flagellum rufo-testaceous, paler beneath; front with close, deep punctures above the antennae, more sparse below; supraclypeal area and clypeus largely blue, more deli- cately punctured; the line between the clypeus and supraclypeal area very faint. Mesothorax shining, coarsely punctured; median and parapsidal grooves distinct, but not deeply impressed; punctation of scutellum similar to that of the mesothorax; metathorax shining, punctate; disk of propodeum small, semicircular, with a polished inclosing rim, shining, with irregularly wrinkled rugae; mesopleurae coarsely punctured; sides of propodeum punctured, the punctures extending up to the edge of the disk; truncation distinct laterally, but not sharply defined; tegulae very clear, honey color, impunctate. Abdomen narrowly ovate, segments punctured to the extreme apical margins, which are testaceous. Wings clear; anterior wing 3.5 mm. Jong; stigma and nervures honey color, except the subcosta and the costa beyond the stigma, which are testaceous; second submarginal cell higher than broad; first recurrent nervure joining second trans- verso-cubital; third submarginal somewhat broader than high, gently contracted above, about three times as long as second on the mar- ginal. Legs dark, with knees reddened; tarsi testaceous. Habitat.—Sante Fe, New Mexico, August, No. 4228 (Cockerell). Type.—Cat. No. 26420, U.S.N.M. Differs from albohirtus Crawford*by the more closely punctured mesothorax; sculpturing of the disk7of propodeum; broader head. From pruinosiformis, Crawford_by the reddened flagellum; more sparse pubescence; broader head, arT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSRE. 25 HALICTUS (CHLORALICTUS) ACTUARIUS, new species. Male.—About 4.5 mm. long; brilliant blue; pubescence white, sparse. Facial quadrangle distinctly longer than broad; orbits con- verging slightly below; flagellum testaceous, yellow testaceous be- neath; second and third joints of antennae of equal length; front shining, with close, rather delicate punctures above antennae; punc- tures below and on the supraclypeal area and clypeus delicate, but more scattered; clypeus largely blue; mandibles dark reddish, Meso- thorax shining, coarsely punctured, the punctures about twice the diameter of a puncture apart; punctation of the scutellum similar to that of the mesothorax; metathorax punctured; disk of propodeum long, shining, without an inclosing rim, plicate laterally, medially with irregularly anastomosing rugae; pleurae and sides of propodeum coarsely punctured; truncation distinct laterally; tegulae honey color, impunctate. Abdomen narrowly ovate, punctured, very sparsely pubescent; apical margins of segments testaceous; margins of seg- ments 1-2 punctured, of segments 3-5 punctureless, Wings very clear; anterior wing about 3.25 mm. long; stigma and nervures honey color, except the subcostal nervure which is testaceous; second sub- marginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal practically quadrate, little con- tracted above, more than twice as long as second on the marginal. Legs largely black; knees red; tarsi yellow-testaceous. Habitat.— Boulder, Colorado, July 31, 1908 (S. A. Rohwer). Type.—Cat, No, 26421, U.S.N.M. Differs: From albohirtus Crawford by the narrower thorax; less abundant pubescence; sculpturing on the disk of propodeum, From pruinosiformis Crawford by the sparse pubescence; more slender abdomen; sculpturing and color of the disk of propodeum, HALICTUS (CHLORALICTUS) SAGAX, new species. Male.—About 5.5—-6 mm. long; head and thorax olive green; abdo- men black; pubescence white. Facial quadrangle longer than broad; inner orbits converging sharply below; face brassy, clothed with dense hairs; flagellum brown, paler beneath; third antennal joint longer than second; front above the antennae sparsely pubescent, very closely punctured, below the antennae so closely covered with plumose hairs that no punctures are apparent; lower half of clypeus and,tips of mandibles reddish yellow. ‘Thorax with sparse pubescence; mesothorax and scutellum shining brassy green, smooth, coarsely punctured, the punctures much closer in the region of the median and parapsidal grooves; disk of propodeum shining dark green, with very coarse rugae extending to the posterior margin, thence over the lateral {sides and covering the entire posterior surface; truncation 45554—25—Proc.N.M.vol.65——39 296 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. very sharply defined; tegulae pale testaceous, impunctate. Abdomen ovate, shining, sparsely pubescent, with delicate piliferous punctures on the bases of segments; apical margins of segments narrowly tes- taceous. Wings hyaline, faintly dusky; anterior wing 4 mm. long; stigma and nervures testaceous: subcostal nervure dark; second sub- marginal cell higher than broad, contracted above; first recurrent nervure joining the second transverso-cubital; third submarginal nar- row—that is, higher than broad—about twice as long as the second on the marginal. Legs black with knees, tips of tibiae and tarsi rufo-testaceous; pubescence pure white. Habitat.—Boulder, Colorado, July 28, and September 12, 1908 (S. A. Rohwer). Two specimens. Type.—Cat. No. 26422, U.S.N.M. Quite similar to disparilis Crawford, from which it differs by the more sharply converging orbits; yellow clypeus; shape and sculp- turing of the disk of the propodeum. HALICTUS (CHLORALICTUS) PEREXIGUUS, new species. Male.—About 5 mm. long; head and thorax greenish blue; abdo- men brown; pubescence white. Facial quadrangle longer than broad; orbits converging sharply below; eyes bulging, giving the face a circular appearance; antennae rufo-testaceous; second and third joints of antennae of equal length; flagellum yellow-testaceous beneath; front covered with appressed white hairs, above the antennae very closely punctured, below the punctures become more sparse; lower half of clypeus and mandibles yellow; clypeus pro- duced little below the lower margin of the eyes. Thorax with moderately dense pubescence; mesothorax shining, with delicate, moderately close punctures; median and parapsidal grooves distinct, but not deeply impressed; scutellum and metathorax shining, deli- cately punctured; disk of propodeum long, shining, with irregular rugae not reaching the apex, which is polished; mesopleurae shining, delicately punctured; truncation not sharply defined, but distinct laterally; tegulae very pale, impunctate. Abdomen slender, the only punctures piliferous; bases of segments clothed with rather sparse hairs; apical margins very pale testaceous. Wings clear; anterior wing 4 mm. long; stigma and nervures testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal little broader than high, contracted above, about equidistant with the second on the marginal, Legs yellow-testaceous; the femora and tibiae somewhat darker; pubescence dull white. Habitat.—Las Cruces, New Mexico, October 12 (Cockerell). Type.—Cat. No. 26423,U.S.N.M. arT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 27 HALICTUS (CHLORALICTUS) OCCULTUS, new species. Male.—About 6.5 mm. long; head olive green; thorax largely blue- green; abdomen black; pubescence white. Facial quadrangle dis- tinctly longer than broad; orbits converging sharply below; front above the antennae without hairs, very closely punctured, below the antennae the punctures are more scattered and the pubescence is dense; supraclypeal area opaque, microscopically lineolate, sparsely punctured; lower half of clypeus and mandibles very pale yellow; antennae dark testaceous, flagellum testaceous beneath; second and third antennal joints of equal length. Thorax with moderately dense pubescence; mesothorax shining, with delicate punctures, the disk blue, the lateral and posterior margins blue-green; punctation of scu- tellum similar to that of the mesothorax; disk of propodeum shining blue, laterally with a few coarse plicae which extend over on the sides; the median portion is irregularly rugose; truncation distinct laterally; tegulae dark, impunctate. Abdomen slender, impunctate, sparsely pubescent; the apical margins of the segments testaceous, with micro- scopic transverse lineolations. Wings clear hyaline; anterior wing 5 mm. long; stigma and nervures testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal little broader than high, about one and one-half times as long as the second on the marginal. Legs black; knees, apices of tibiae and tarsi yellow; the front legs with tibiae entirely yellow; pubescence on legs short, pure white. Habitat.—Florissant, Colorado, July 23, at flowers Potentilla (Cockerell). Type.—Cat. No. 26424, U.S.N.M. Differs: From hortensis Lovell by the larger size; brassy face and mesothorax; clear wings; legs black; narrower face. From nevadensis Crawford by the narrower, brassy face; paler flagellum; brassy mesothorax and scutellum; clear wings; sculpturing on disk of propodeum. HALICTUS (CHLORALICTUS) EVESTIGATUS, new species. Male.—About 6-6.5 mm. long; head and thorax blue-green; abdo- men black; pubescence white. Facial quadrangle somewhat longer than broad; orbits converging slightly below; antennae dark brown, third joint longer than the second; flagellum yellow-testaceous beneath; front above antennae with close, shallow punctures, below sparsely punctured and clothed with dense pubescence; the lower half of the clypeus pale yellow; mandibles dark, red at the apex. Thorax with moderately dense short hairs; mesothorax and scutellum shining, with coarse punctures, the punctures hardly the diameter of a punc- ture apart; disk of propodeum long, shining, without an inclosing rim, 28 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. emarginate posteriorly, with irregularly anastomosing rugae; trunca- tion distinct laterally; tegulae dark, impunctate. Abdomen ovate, shining piceous, sparsely pubescent; the bases of the segments punc- tate; the apical margins testaceous with microscopic, transverse line- olations. Wings hyaline; anterior wing 4.5 mm. long; stigma and nervures dark testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure one-third of the distance from the apex; third submarginal broad, sharply contracted above, about one and one-half times as long as the second on marginal. Legs black: sparsely pubescent; tarsi yellow. Habitat—Ward, Colorado, August 10 (Cockerell). Type.—Cat. No. 26425, U.S.N.M. HALICTUS (CHLORALICTUS) PIKEI, new species. Male.—About 7 mm. long; head and thorax brilliant dark blue; abdomen black; pubescence white. Facial quadrangle considerably longer than broad; orbits converging slightly below; antennae dark testaceous, the third joint longer than the second; flagellum yellow- testaceous beneath; face shining, sparsely pubescent; front above the antennae closely punctured, the punctures becoming more sparse below; lower half of clypeus pale yellow; mandibles dark, reddish at the apex. Thorax with short hairs; mesothorax shining, the disk rather coarsely punctured, the punctures about the diameter of a puncture apart; outside the disk, the punctures are more delicate; scutellum greenish blue, shining, delicately punctured; disk of pro- podeum long, without a distinct inclosing rim, with very irregular rugae extending to the apex; mesopleurae shining, with shallow punctures; truncation distinct laterally; tegulae dark, impunctate. Abdomen ovate, shining, sparsely pubescent; the only punctures piliferous; the bases of the segments 4—5 with a bluish reflection; apical margins of segments brownish. Wings clear hyaline; anterior wing 4.75 mm. long; stigma and nervures dark testaceous; basal nervure strongly bent; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third sub- marginal about twice as long as the second on the marginal. Legs black, with dull white hairs; knees red; tarsi yellow. Habitat.—Printing Office, Pikes Peak, Colorado, September 17 (Cockerell). Type.—Cat. No. 26426, U.S.N.M. HALICTUS (CHLORALICTUS) OBNUBILUS, new species. Male.—About 4 mm. long; head and thorax dark blue-green; abdomen black; pubescence white, sparse. Facial quadrangle longer than broad; orbits converging sharply below; antennae dark, second and third joints of equal length; flagellum dark brown, hardly paler art, 19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 29 beneath; front above the antennae closely punctured; below the antennae, the supraclypeal area and clypeus with sparse deep punc- tures; lower half of clypeus black. Mesothorax shining, greenish, with faint microscopic lineolations; outside the disk, the punctures are about the diameter of a puncture apart, on the disk, twice as far apart; scutellum and metathorax shining, punctured; disk of propo- deum crescentic, with a low, polished, inclosing rim, shining, with plicae extending to the posterior margin; mesopleurae shining, coarsely punctured; sides of propodeum delicately punctured; truncation dis- tinct laterally; tegulae dark; impunctate. Abdomen slender, shin- ing, the segments delicately punctured, except the apical margins of the segments which are polished; sparsely pubescent. Wings faintly dusky; anterior wing 2.5 mm. long; stigma and nervures dark; second submarginal cell higher than broad; contracted above; first recurrent nervure joining the second transverso-cubital; third submarginal very broad, contracted about one-half above, little longer than second on the marginal. Legs black. Habitat— Boulder, Colorado, July 18, 1908 (S. A. Rohwer). Type.—Cat. No. 26427, U.S.N.M. Differs: From ruidosennsis Cockerell by the smaller size: plicae on the disk of propodeum reaching the posterior margin; mesothorax brassy; paler color. HALICTUS (CHLORALICTUS) INSULSUS, new species. Male.—About 5 mm. long; head and thorax dark blue; abdomen black; pubescence white, sparse. Facial quadrangle about as broad as long; orbits converging below; antennae dark brown, the second and third joints of equal length; flagellum little paler beneath; front above the antennae very closely punctured; the lower portion of the front, supraclypeal area and clypeus more sparsely punctured; cly- peus black, produced more than half its length below the lower mar- gins of the eyes. Mesothorax and scutellum with moderately coarse, shallow punctures, about the diameter of a puncture apart; disk of propodeum without an inclosing rim, plicatulate at the base only, the apex is polished; mesopleurae with shallow punctures; sides of propodeum punctured; truncation not sharply defined, but distinct laterally; tegulae dark,impunctate. Abdomen slender, the only punc- tures piliferous; the apical margins of segments brownish, Wings faintly dusky; anterior wing 4 mm. long; stigma and nervures dark; the second submarginal cell as broad at the base as it is high, but contracted almost one-half above, receiving the first recurrent nervure very near the apex; third submarginal about twice as long as the second on marginal. Legs black. Habitat.—Beulah, New Mexico, August 18 (W. Porter). Ty pe.—Cat, No. 26428, U.S.N.M. 30 PROCEEDINGS OF THE NATIONAL MUSEUM. YOL. 65. HALICTUS (CHLORALICTUS) CONSONUS, new species. Male.—About 6.5-7 mm. long; head and thorax very dark blue- green; abdomen black; pubescence white. Facial quadrangle some- what longer than broad; inner orbits converging sharply below; antennae black, second and third joints of about equal length; fla- gellum dark testaceous beneath; front above the antennae very closely punctured, the punctures becoming more open and sparse below; supraclypeal area and clypeus microscopically lineolate, sparsely punctured; clypeus black; mandibles black, slightly reddened api- cally. Thorax with short, rather dense pubescence; mesothorax microscopically tessellate, quite closely punctured, the punctures more sparse on the disk; scutellum punctured; disk of propodeum long, shining, with plicae on the sides, the median portion with irreg- ularly anastomosing rugae, apex polished; truncation distinct later- ally; tegulae dark, impunctate. Abdomen shining, sparsely pubes- cent, narrowly ovate; segments with transverse lineolations; the only punctures piliferous; apical margins of segments polished. Wings faintly dusky; anterior wing 5 mm. long; stigma and nervures dark; second submarginal cell as broad as high, contracted slightly above, receiving the first recurrent nervure near the apex; third submarginal higher than broad, hardly contracted above, about one and one-half times as long as the second on marginal. Legs black, with dull white pubescence, except on the tarsi where it is yellowish. Habitat.—Colebrook, Connecticut, September 1-7 (W. M. Wheeler). Type.—Cat. No. 26429, U.S.N.M. Differs: From ruidosensis Cockerell by the shape and sculpturing of the disk of propodeum; impunctate abdomen; flagellum paler beneath. From viridatus Lovell by the darker thorax; more closely punc- tured mesothorax; sculpturing of disk of propodeum. HALICTUS (CHLORALICTUS) PRAEPES, new species. Male.—About 6.5-7 mm. long; head and thorax dark greenish blue; abdomen shining black; pubescence white, rather sparse. Facial quadrangle longer than broad; orbits converging sharply below; antennae dark brown, third joint longer than second; flagellum tes- taceous beneath; front above the antennae very closely pnnctured; below, with more scattered, shallow punctures, and covered with dense pubescence; lower portion of clypeus black; clypeus and sup- raclypeal area without distinct punctures. Mesothorax shining, rather sparsely punctured; scutellum distinctly rounded npward, shining, almost without punctures; dish of propodeum slightly elevated pos- teriorly, shining, with few rugae extending across the disk and on to the sides of the propodeum, faint reticulations between the rugae; truncation distinctly laterally, but not sharply defined; sides of propodeum rugose; tegulae dark, impunctate. Abdomen slenderly | | art. 19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 31 ovate, shining, impunctate, almost without pubescence; apical margins of segments dark testaceous. Wings quite clear; anterior wing about 4.5 mm. long; stigma and nervures dark testaceous; basal nervure very gently arched; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third sub- marginal not contracted above, about twice as long as the second on marginal. Legs black. Habitat.—Peaceful Valley, Colorado, 1919 (Cockerell). Ty pe.—Cat. No. 26430, U.S.N.M. Differs: From ruidosensis Cockerell by the shining, more sparsely punctured mesothorax and scutellum; sculpturing of the disk of propodeum; polished abdomen. From viridatus Lovell by the shining blue head and thorax; more sparsely and delicately punctured mesothorax; impunctate abdomen. HALICTUS (CHLORALICTUS) ASTUTUS, new species. Male.—About 7 mm. long; head and thorax largely dark blue-green; abdomen black; pubescence dull white. Facial quadrangle distinctly longer than broad; orbits converging below; face clothed with rather sparse, dull white hairs; front above the antennae without punctures, but rough, giving it a dull appearance; below the antennae, it is sparsely punctured; supraclypeal area and upper half of clypeus microscopically tessellate, sparsely punctured; antennae dark, third joint scarcely longer than the second; flagellum rufo-testaceous beneath. Thorax with moderately dense, long hairs; mesothorax smooth, shining, sparsely and coarsely punctured; scutellum duller, but with similar punc- tation, two smooth spots on the disk; disk of propodeum crescentic, in- closed by a rim posteriorly, with coarse rugae not quite reaching the apex, which is microscopically tessellate, but the rugae extend over the lateral margins of the disk; upper half of lateral sides and posterior side of propodeum coarsely rugose; truncation clearly defined latter- ally; tegulae dark, impunctate. Abdomen narrowly ovate, impunc- tate; apical margins of segments polished and narrowly testaceous; the bases of the segments covered with sparse pubescence. Wings hyaline; anterior wing 5 mm. long; stigma and nervures dark; second submarginal cell higher than broad, contracted above, receiving the first recurrent nervure very near the apex; third submarginal higher than broad, hardly contracted above, twice as long as the second on marginal. Legs black, with yellowish white pubescence; tarsi some- what reddened. Habitat.—Beulah, New Mexico, August 18 (W. Porter). Type.—Cat. No. 26431, U.S.N.M. Differs: From ruidosensis Cockerell by the shining, more sparsely punctured mesothorax; shape and sculpturing of the disk of propo- deum; impunc tate abdomen. 32 PROCEEDINGS OF THE NATIONAL MUSEUM. vou. 65. From viridatus Lovell by the shining blue, more sparsely punc- tured mesothorax; dusky wings; disk of propodeum plicate at the base only; impunctate abdomen. HALICTUS (CHLORALICTUS) ABUNDUS, new species. Male.—About 7 mm, long; head and thorax dark blue; abdomen black; pubescence short, dull white. Facia] quadrangle distinctly longer than broad; orbits converging sharply below; face with sparse pubescence; front above the antennae closely punctured, below, more sparsely punctured; supraclypeal area and clypeus microscopically lineolate and coarsely punctured; antennae dark reddish brown, second and third joints of equal length; flagellum ferruginous beneath. Thorax with quite dense pubescence, mesothorax microscopically lineolate, coarsely punctured; disk of scutellum with two large polished spots; disk of propodeum nearly crescentic, shining, with coarse irregularly anastomosing rugae reaching the apex, at the sides the rugae extend on to the sides of the propodeum; posterior side of propodeum coarsely rugose; truncation clearly defined; tegulae ferrugino-testaceous, impunctate. Abdomen ovate, polished, very sparsely pubescent; segments with apical margins polished. Wings reddish, hyaline; stigma and nervures red-testaceous; anterior wing 5.5 mm. long; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third submarginal hardly broader than high, about one and one-half times as long as the second on marginal. Legs black, sparsely pubescent; tarsi reddish. Halbitat.—Beulah, New Mexico, end of August (Cockerell and Porter). Seven specimens. Type.—Cat. No. 26432, U.S.N.M. Differs: From ruidosensis Cockerell by the more sparsely punc- tured mesothorax; sculpturing of the disk of propodeum; flagellum paler beneath; wings lighter; tarsi reddened; abdomen obovate, not punctured. From viridatus Lovell by the paler flagellum; yellowish pubescence; mesothorax tessellate, more closely punctured; wings and tegulae reddened. HALICTUS (CHLORALICTUS) TRANQUILLUS, new species. Male.—About 7 mm. long; head and thorax blue; abdomen black; pubescence white,sparse. Facial quadrangle longer than broad, orbits converging below; face above the antennae very closely punctured; the punctures below and on the sides of the face more sparse; clypeus and supraclypeal area microscopically tessellate, with sparse, deep punctures; antennae dark, second and third joints of equal length; agT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 388 flagellum testaceous beneath. Mesothorax and scutellum opaque, microscopically tessellate; the disk sparsely punctured; outside the disk the punctures are about the diameter of a puncture apart; disk of propodeum dull, slightly elevated posteriorly, microscopically tessellate between irregular rugae; the rugae extend on to the sides of the propodeum; truncation distinct laterally; tegulae dark, impunc- tate. Abdomen ovate, shining, impunctate; very sparsely pubescent; apical margins of segments polished, narrowly testaceous. Wings hyaline; anterior wing 5.25 mm. long; stigma and nervures dark; second submarginal ceil higher than broad, receiving the first recur- rent nervure a little distance from the apex; third submarginal sub- quadrate, hardly contracted above, about one and one-third times as long as the second on the marginal. Legs black, with yellowish hairs; tarsi reddish. Halitat.—Santa Fe, New Mexico, July (Cockerell). No. 3467; on TIinum lewisii. Type.—Cat. No. 26433, U.S.N.M. HALICTUS (CHLORALICTUS) PUDICUS, new species. Male.—About 6.5 mm. long; head and thorax dark blue; abdomen black; pubescence pure white, sparse. Facial quadrangle longer than broad; orbits converging slightly below; front above the anten- nae with close, shallow punctures; the punctures becoming more sparse below, and at the sides of the face which is greenish; clypeus and supraclypeal-area microscopically tessellate, delicately punctured; apices of mandibles red; antennae dark, second and third joints of equal length; flagellum testaceous beneath. Mesothorax opaque, microscopically tessellate, with punctures about the diameter of a puncture apart, and more scattered on the disk; punctation of scu- tellum similar to that of the mesothorax, two shining spots on the disk; disk of propodeum crescentic, shining, plicate, the plicae some- what discontinuous and extending over the margin on to the sides; truncation distinct laterally, but not sharply defined; tegulae dark, impunctate. Abdomen narrowly ovate, shining, impunctate, very sparsely pubescent; apical margins of the segments polished, narrowly testaceous. Wings hyaline; anterior wing 5 mm, long; stigma and nervures dark testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure very near the apex; third sub- marginal as high as broad, contracted sharply above, about equidis- tant with the second on the marginal. Legs black; knees somewhat reddened; tarsi yellow. Habitat—Longs Peak, Colorado, August, at flowers gentian (Cockerell). Type.—Cat. No. 26434, U.S.N.M. 45554—25—Proc.N.M.vol.65——40 34 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 65. HALICTUS (CHLORALICTUS) LACTINEUS, new species. Male.—About 6 mm, long; head and thorax greenish blue; abdo- men black; pubescence pure white. Facial quadrangle longer than broad; orbits converging slightly below; the entire face, clypeus and supraclypeal area closely punctured; lower half of clypeus black; mandibles red at the apex; antennae dark, third joint longer than the second; flagellum rufo-testaceous beneath. Thorax densely pubescent; mesothorax somewhat polished, microscopically lineolate, very coarsely punctured, the punctures about the diameter of a punc- ture apart; the disk with more scattered punctures; scutellum closely punctured, with two large polished spots on the disk; disk of pro- podeum crescentic, shining, the plicae extending to the posterior margin which is sharply elevated; at the sides the plicae extend on to the lateral sides of the propodeum; mesopleurae with coarse shal- low punctures; truncation sharply defined laterally; tegulae honey color, impunctate. Abdomen ovate, apical margins of segments somewhat polished, narrowly testaceous; segments 1-3 delicately punctured, quite sparsely pubescent; segments 4-5 with piliferous punctures only, pubescence more abundant. Wings milky white; anterior wing 4.25 mm. long; stigma and nervures honey color; the second submarginal cell much higher than broad, receiving the first recurrent nervure very near the apex; third submarginal broad at the base, contracted above, at least twice as long as the second on the marginal. Legs black; knees, apices of tibiae and tarsi yellow. Habitat.—Boulder, Colorado, August 4, 1908 (S. A. Rohwer). Type.—Cat. No. 26435, U.S.N.M. Differs: From albipennis Robertson by the more sparsely punc- tured mesothorax; sculpturing of the disk of propodeum; smaller size; paler tegulae; wings more milky white. From connezus Crawford by the more coarsely punctured meso- thorax; sculpturing of the disk of propodeum; paler tegulae and wings; color of head and thorax. HALICTUS (CHLORALICTUS) CALLIDUS, new species. Male.—About 5.5 mm. long; head and thorax golden green; abdo- men black; pubescence pure white. Facial quadrangle longer than broad; orbits converging slightly below; face clothed with very dense pubescence, closely punctured; antennae dark, second and third joints of equal length; flagellum testaceous beneath; mandibles pale red- dish. Thorax with dense, short pubescence; mesothorax opaque, microscopically tessellate, closely punctured, punctures laterally contiguous, on the disk the punctures are a little more than the diameter of a puncture apart; punctation of the scutellum similar to that of the mesothorax; disk of propodeum crescentic, shining, — art.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 85 plicate, the plicae reaching the broad, low posterior rim; at the sides the plicae extend over the margin on to the lateral sides of the propodeum;. mesopleurae with coarse, shallow punctures; trun- cation sharply defined laterally; tegulae pale testaceous, impunctate. Abdomen ovate, with rather close, short hairs; apical margins of seg- ments with faint, transverse lineolations, testaceous; segments 1-3 closely punctured: segments 4-5 with piliferous punctures only. Wings clear; anterior wing 4.5 mm. long; stigma and nervures very pale testaceous; subcostal nervure very dark; basal nervure very strongly bent; second submarginal cell higher than broad; the first recurrent nervure joining the second transverso-cubital; third sub- marginal broad, contracted above, about one and one-half times as long as the second on the marginal. Legs black; knees and tips of tibae and tarsi yellow. Habitat.—East Falls Church, Virginia, July 20 (S. A. Rohwer), at flowers Daucus carota. Type.—Cat. No. 26436, U.S.N.M. Differs: From hortensis Lovell by the larger size; paler wings; head and thorax golden green; punctured abdomen; sculpturing of the disk of propodeum. From disparilis Crawford by the narrower face; opaque, more closely punctured mesothorax and scutellum; sculpturing of the disk of propodeum; abdomen closely punctured, with greenish reflections. HALICTUS (CHLORALICTUS) APERTUS, new species. Male.—About 5 mm. long; head and thorax dark blue; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging sharply below; face clothed with quite dense pubes- cence; front above the antennae very closely punctured, the punctures more sparse below and on the sides of the face; punctures sparse on the supraclypeal area and clypeus, which are dull and microscopically tessellate; anterior margin of clypeus obscurely yellowish; third joint of antennae longer than second; flagellum dark testaceous, paler beneath. Thorax with close, short hairs; mesothorax and scutellum opaque, microscopically tessellate, appearing almost finely granular, very closely punctured, the punctures more sparse on the disk; disk of propodeum crescentic, shining, with microscopic transverse lineo- lations between the plicae, which reach the apex; the plicae extend on to the sides of the propodeum; truncation distinct laterally; tegulae very pale testaceous, impunctate. Abdomen obovate, densely pubes- cent, with delicate piliferous punctures; apical margins of segments microscopically lineolate; testaceous. Wings hyaline; about 3.5 mm. long; stigma and nervures testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure a little distance from 36 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 65. the apex; third submarginal subquadrate, contracted little above, hardly longer than the second on the marginal. Legs black; knees, tips of tibiae, and tarsi reddish yellow. Habitat.—East Falls Church, Virginia, July 22; and Chain Bridge, Virginia, (type locality), June 14 (S. A. Rohwer). Two specimens. Type.—Cat. No. 26437, U.S.N.M. Differs from hortensis Lovell by more robust species; mesothorax opaque, closely punctured; orbits converging more sharply below; paler flagellum; sculpturing of the disk of propodeum; paler wings. HALICTUS (CHLORALICTUS) GENUINUS, new species. Male.— About 5.5 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle somewhat longer than broad; orbits converging below; face densely pubescent; front above the antennae closely punctured, the punctures becoming more sparse below; antennae dark, the second and third joints of equal length; flagellum testaceous beneath; mandibles red at the apex. Thorax. with quite dense, short hairs, mesothorax opaque, microscopically tessellate, very closely punctured, the punctures on the disk about twice as far apart; punctation of the scutellum similar to that of the mesothorax; two smooth spots on the disk; disk of propodeum cres- centic, shining, inclosed posteriorly by alow rim, plicae reaching the posterior margin and extending on the sides of the propodeum; trun- cation distinct laterally; tegulae testaceous, impunctate. Abdomen narrowly ovate; apical margins of segments transversely lineolate; bases of segments with delicate piliferous punctures and dense, short hairs. Wings clear hyaline; anterior wing 4.25 mm. long; stigma and nervures pale testaceous; second submarginal cell higher than broad, contracted above, receiving the first recurrent nervure a little distance from the apex; third submarginal almost as broad as high, contracted above, one and one-half times as long as the second on the marginal. Legs black, with quite abundant hairs; knees, tips of tibiae, and tarsi reddened. Habitat.—Chain Bridge, Virginia, June 14 (S. A. Rohwer). Type.—Cat. No. 26438, U.S.N.M. Differs from hortensis Lovell by the larger, more robust size; darker flagellum; more closely punctured mesothorax; darker tegulae; sculp- turing of the disk of propodeum. HALICTUS (CHLORALICTUS) BASILICUS, new species. Male.—About 5.5-6 mm, long; head and thorax blue-green; abdo- men black; pubescence white. Facial quadrangle considerably longer than broad; orbits converging sharply below; entire face closely punc- tured and clothed with dense pubescence; antennae dark, second and akT. 19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE 37 third joints of equal length; flagellum testaceous beneath; lower half of clypeus black. Thorax with quite dense, short hairs; mesothorax shiing, with faint microscopic lineolations, coarsely and deeply punctured, the punctures about twice as far apart on the disk; punctation of the scutellum similar to that of the mesothorax, two large, shining spots on the disk; disk of propodeum subcrescentic, shining, with coarse, irregular rugae extending over the margin and covering the sides of propodeum; mesopleurae with coarse, shallow punctures; truncation sharply defined laterally; tegu!ae honey color, impunctate. Abdomen ovate, shining, very sparsely pubescent; segments 1-2 delicately punctured; apical margins of segments polished, dark testaceous. Wings clezr; anterior wing 4 mm. long; stigma and nervures very pale testaceous; second submarginal cell considerably higher than broad, receiving the first recurrent nervure near the apex; third submarginal higher than broad, about twice as long as the second on marginal, receiving the second recurrent ner- vure near the apex. Legs shining, black, with moderately close hairs; knees, tips of tibiae, and tarsi ye low. Hatitat.—Colebrook, Connecticut, September 1-7 (W. M. Wheeler). Type.—Cat. No. 26439, U.S.N.M. Differs: From hortensis Lovell by the larger size; narrower face; clear wings; more abundant pubescence; sculpturing of the disk of propodeum. From nevadensis Crawford by the narrow face; paler flagellum and tegulae; clear wings; sculpturing of the disk of propodeum; broader, polished abdomen; knees red; tarsi clear yellow. HALICTUS (CHLORALICTUS) MACTUS, new species. Male.—About 5 mm. long; head and thorax dark blue-green; face, mesothorax, scutellum, and mesopleurae with a brassy tinge; abdo- men black; pubescence white. Facial quadrangle little longer than broad; orbits converging slightly below; face shining, sparsely pu- bescent; front closely punctured, the punctures more scattered and shallow below; antennae dark, second and third joints of equal length; flagellum testaceous beneath; lower half of clypeus shining black, sparsely punctured. Thorax with short, rather dense pubes- cence; mesothorax polished, with deep punctures a little more than the diameter of a puncture apart; punctation of scutellum much like that of the mesothorax, two smooth spots on the disk; metathorax shining, punctured; disk of propodeum dark blue, long, inclosed pos- teriorly by a low rim, with very irregular, discontinuous rugae; meso- pleurae shining, coarsely punctured; truncation well defined laterally; tegulae red-testaceous, impunctate. Abdomen narrowly ovate; seg- ments except for a very narrow, polished apical margin, with delicate, piliferous punctures and short hairs. Wings clear; anterior wing 38 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. 3.75 mm. long; stigma and nervures pale testaceous; second submar- ginal cell higher than broad, the first recurrent nervure joining the second transverso-cubital; third submarginal broad below, contracted above, little longer than the second on marginal. Legs black; tarsi with yellowish hairs. Habitat—Longs Peak Trail, Colorado, July 18 at flowers Senecio (W. P. Cockerell). Type.—Cat. No. 26400, U.S.N.M. HALICTUS (CHLORALICTUS) PENSITUS, new species. Male.—About 5 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging below; face shining, rather densely pubescent; front closely punctured; the punctures more scattered below; clypeus sparsely punctured, lower half black; antennae brown, second and third joints of equal length; flagellum dark testaceous beneath. Thorax densely pubescent; mesothorax shining, with punctures about the diameter of a puncture apart, a little more scattered on the disk; punctation of scutellum similar to that of the mesothorax; two polished spots on the disk; disk of propodeum long, shining, with more or less irreg- ular plicae not quite reaching the apex, which is polished ; mesopleurae coarsely punctured; truncation distinct laterally; tegulae dark, im- punctate. Abdomen narrowly ovate; apical margins of segments very narrowly testaceous, polished; bases of segments delicately punc- tured, clothed with quite abundant pubescence. Wings clear; anterior wing 3.75 mm. long; stigma and nervures pale testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure near the apex; third submarginal contracted about one-half above, hardly longer than the second on the marginal, receiving the second recurrent nervure about one-fourth from the apex. Legs black. Habitat.— Boulder, Colorado, July 20 to August 1, 1908 (S. A. Rohwer). Four specimens. Type.—Cat. No. 26441, U.S.N.M. Differs: From hortensis Lovell by the larger size; more abundant pubescence; clear wings; reddish tegulae; head and thorax blue-green; sculpturing of the disk of propodeum; legs black. From nevadensis Crawford by the clear wings; abundant pubescence; sculpturing of the disk of propodeum. HALICTUS (CHLORALICTUS) ACCENTUS, new species. Male.—About 6 mm. long; head and thorax olive green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging below; antennae dark, third joint somewhat longer than second; flagellum rufo-testaceous; front very closely punctured; below the punctures are more scattered; clypeus closely punctured; the anterior margin of clypeus and mandibles chrome-orange. art.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 39 Thorax with rather dense pubescence; mesothorax polished, closely punctured, the punctures about the diameter of a puncture apart except on the disk where they are about twice as far apart; punc- tation of the scutellum similar to that of the mesothorax; disk of propodeum dark green, subcrescentic, shining, with coarse plicae reaching the apex, inclosed by a low, irregular rim; truncation distinct laterally; tegulae very pale testaceous, impunctate. Abdo- men ovate, shining; apical margins of segments polished; bases of segments with delicate piliferous punctures, clothed with short hairs, Wings clear, faintly yellowish; anterior wing 4.5 mm. long; stigma and nervures pale testaceous; second submarginal cell higher than broad; first recurrent nervure joining the second transverso-cubital; third submarginal broader than high, contracted above, one and one- half times as long as second on marginal. Legs black; knees, tips of tibiae, and tarsi yellowish. Hatitat.—Boulder, Colorado, August 1, 1908 (S. A. Rohwer); Uni- versity Campus (Cockerell) (type). Type.—Cat. No. 26442, U.S.N.M. Differs: From hortensis Lovell by the larger, more robust size; narrower face; face and mesothorax golden green; flagellum rufo- testaceous beneath; sculpturing of the disk of propodeum; paler wings, From nevadensis Crawford by the narrower face; flagellum pale beneath; mandible yellowish; paler tegulae; sculpturing of the disk of propodeum; mesothorax more delicately punctured; knees and tarsi yellowish. From disparilis Crawford by the more sharply converging or- bits; face more closely punctured; more delicately punctured meso- thorax; less brassy face and mesothorax; sculpturing of the disk of propodeum. HALICTUS (CHLORALICTUS) MOLLIS, new species, _ Male.—About 5.5 mm. long; head and thorax blue-green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging slightly below; face sparsely pubescent; front closely punctured; the punctures more sparse below; clypeus brassy, the lower one-third black; antennae dark, second and third joints of equal length; flagellum dark, hardly paler beneath; mandibles dark; red at the apex. Thorax with quite dense, long hairs; mesothorax polished; punctures on the mesothorax about the diameter of a puncture apart, more sparse on the disk; scutellum closely punctured - two polished spots on the disk; disk of propodeum long, with irregu- larly anastomosing rugae reaching the apex, which is polished; meso pleurae and sides of propodeum coarsely punctured, brassy; trunca, tion not sharply defined laterally; tegulae very pale; impunctate. 40 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL, 65. Abdomen ovate, polished; segments punctured, sparsely pubescent. Wings clear; anterior wing 4 mm. long; stigma and nervures pale testaceous; second submarginal cell much higher than broad, receiv- ing the first recurrent nervure near the apex; third submarginal broad, more than twice as long as the second on marginal. Legs black; knees somewhat reddened; tarsi brownish, with yellowish hairs. Habitat.—F lorissant, Colorado, July 16 at flowers Dasiphora fruti- cosa (Cockerell). Type.—Cat. No. 26443, U.S.N.M. Differs from nevadensis Crawford by the pale tegulae; clear wings; shining, more sparsely pubescent abdomen; margins of abdominal segments dark; sculpturing of the disk of propodeum, HALICTUS (CHORALICTUS) MEROSUS, new species. Male.—About 5 mm. long; head and thorax dark blue; abdomen dark brown; pubescence white. Facial quadrangle longer than broad; orbits converging sharply below; face quite densely pubescent; front with close, but shallow punctures; the punctures are more sparse below; second and third joints of equal length; flagellum dark testaceous; yellow-testaceous beneath; mandibles reddish. Thorax sparsely pubescent; mesothorax polished, with sparse, delicate punc- tures; scutellum delicately punctured, with two large, polished spots on the disk; disk of propodeum very dark blue, subcrescentic, shining, with a few irregular plicae reaching the apical margin; pleurae very rough; truncation distinct laterally; tegulae pale, impunctate. Ab- domen ovate, shining; apical margins polished, testaceous; bases of segments sparsely pubescent. Wings yellowish; anterior wing 3.25 mm. long; stigma and nervures testaceous; second submarginal cell higher than broad, contracted about one-half above, receiving the. first recurrent nervure near the apex; third submarginal higher than broad, contracted above, more than twice as long as second on mar- ginal. Legs dark brown, with dull white hairs; knees, tips of tibiae, and tarsi yellow. farolacdaont cide Fe, New Mexico, September 21, No. 5608 (Cock- erell). Type.—Cat. No, 26444, U.S.N.M. Differs from microlepoides Ellis by the paler flagellum; delicately punctured mesothorax; sculpturing of the disk of propodeum; brown- ish legs and abdomen; darker wings. HALICTUS (CHLORALICTUS) MALINUS, new species. Male.—About 5.5 mm. long; head and thorax blue-green; abdomen dark brown; pubescence white. Facial quadrangle little longer than broad; orbits converging sharply below; entire face densely pubescent; front closely punctured; the punctures more scattered below; second agT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 4] and third antennal joints of equal length; flagellum testaceous, yellowish beneath; mandibles somewhat orange-yellow. Thorax with moderately dense pubescence; mesothorax shining, delicately punctured; scutellum with similar punctation; two polished spots on the disk; disk of propodeum dark green, crescentic, shining, with irregularly anastomosing rugae covering the entire area; tegulae honey color, impunctate; truncation not sharply defined, but distinct later- ally. Abdomen ovate, impunctate; apical margins of segments trans- versely lineolate, testaceous; bases of segments clothed with rather abundant pubescence. Wings clear; anterior wing 3.5 mm. long; stigma and nervures very pale testaceous; second submarginal cell higher than broad, receiving the first recurrent nervure a little dis- tance from the apex; third submarginal subquadrate, little contracted above, almost twice as long as the second on marginal. Legs brown; knees, tips of tibiae, and tarsi yellow. Habitat.—Kast Falls Church, Virginia, July 16, at flowers Cicuta maculata and July 20, at flowers Daucus carota (type). Two specimens (S. A. Rohwer.) Type.—Cat. No. 26445, U.S.N.M. Differs: From hortensis Lovell by the narrower face; paler wings and tegulae; paler flagellum; sculpturing of the disk of propodeum; mesothorax more closely punctured. From nevadensis Crawford by the more delicately punctured meso- thorax; flagellum pale beneath; sculpturing of the disk of propodeum; abdomen brown, the only punctures piliferous; legs brown, with knees and tarsi yellowish. HALICTUS (CHLORALICTUS) INSOLITUS, new species. Male.—About 4.5-5 mm. long; head and thorax green; abdomen black; pubescence white. Facial quadrangle longer than broad; orbits converging slightly below; front with very close, but shallow punctures; below the punctures are more sparse; clypeus largely black, quite closely punctured; antennae dark, third joint hardly longer than the second; flagellum rufo-testaceous beneath; mandibles reddish yellow. Thorax with moderately close, short hairs; meso- thorax microscopically lineolate, closely and delicately punctured; punctation of scutellum similar to that of the mesothorax; disk of propodeum subcrescentic, with irregular rugae reaching the apex, which is slightly elevated; truncation distinct laterally; tegulae very pale testaceous,impunctate. Abdomen slender, shining, impunctate; apical margins of segments polished, testaceous; bases of segments clothed with sparse, short hairs. Wings faintly dusky; anterior wing 3.5 mm. long; stigma and nervures testaceous; second submar- ginal higher than broad; first recurrent nervure meeting the second transverso-cubital; third submarginal contracted about one-third 42 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. above, receiving the second recurrent nervure near the apex; twice as long as the second on marginal. Legs black, shining; knees, tips of tibiae, and tarsi yellow. Habitat.—Vinton, lowa, June 23, 1922 (Sandhouse). Ty pe.—Cat. No, 26446, U.S.N.M. Differs from exiguus Smith by the paler flagellum; more slender species; head and thorax not so brassy; sculpturing of the disk of propodeum. NEW LOCALITY RECORDS OF DESCRIBED SPECIES. The following records are new: HALICTUS EURYCEPS Ellis. New Mexico: 3 females, Beulah, August 25, 1899 (W. Porter). HALICTUS SUBCONNEXUS Ellis. New York: 1 female, Garrison (Eleth Cattell). HALICTUS PRUINOSIFORMIS Crawford. Colorado: 1 female, 4 miles north of Boulder, June 18 at flowers Petalostemon oligophyllus (T. and W. Cockerell); 1 female, Colorado Springs (Cockerell). HALICTUS LAZULIS Ellis. Colorado: 1 female, Longs Peak Inn, June 25 (Cockerell). HALICTUS PAVONINUS Elis. Colorado: 1 female, Longs Peak Inn, June 26 (Cockerell). HALICTUS SUCCINIPENNIS Ellis. Colorado: 1 female, Boulder, April 14,1907, at flowers Physaria (S. A. Rohwer); 1 female, Boulder, May 21,1922 (Elsie M. Foster). HALICTUS EOPHILUS Ellis. New Mexico: 1 female, Albuquerque, May 10, No. 1271 (Cockerell). HALICTUS STULTUS Cresson. New Mexico: 1 female, Cockerell No. 706; 2 females, Mesilla, May 9-10, on Actinella richardsoni and Erigeron divergens (Cockerell). HALICTUS SPARSUS Robertson. Iowa: 4 females, Vinton, June 23, 1922 (Sandhouse). Virginia: 2 females, East Falls Church, May 7 and July 16 at flow- ers Cicuta maculata (S. A. Rohwer). New Mexico: 4 females, Santa Fe, July and August at Linwm lew- siti and Lepachys Cockerell Nos. 3469 , 3472, 3387, and 3936; 3 females, Las Vegas, July 22 and August 14 at Grindelia squamosa and Cleome (W. Porter and Cockerell); 2 females, Pecos, June 15, and July 8 (W. Porter) and (Grabham). Colorado: 1 female Manitou, April 28 on Salix (Cockerell). akT.19. AMERICAN BEES OF THE GENUS HALICTUS—SANDHOUSE. 43 HALICTUS ALBIPENNIS Robertson. Colorado: 1 female, Boulder, May 21, 1922 (Elsie M. Foster); 1 female, June 18, at Petalostemon oligophyllus (T. and W. Cockerell). HALICTUS BRUNERI Crawford. Iowa: 2 females, Vinton, June 29, 1922 (Sandhouse). HALICTUS PERPUNCTATUS Ellis. Colorado: 1 female, Boulder, May 20, 1922 (F. D. Becker). HALICTUS CRESSONII Robertson. New York: 1 female, Garrison (Eleth Cattell). HALICTUS VERSATUS Robertson. Iowa: 1 female, Vinton, June 29, 1922 (Sandhouse). HALICTUS OBLONGUS Lovell. Colorado: 2 females, Boulder, May 9, 1907, at flowers Tarazacum (S. A. Rohwer); 1 male, Peaceful Valley, August (Cockerell). New Mexico: 3 females, Santa Fe, July and August, one on Pent- stemon Cockerell Nos. 3825, 4227, and 4394; 1 female, Pecos, June 24 (W. P. Cockerell); 1 female, Las Vegas, April 20, at flowers of wild plum (Cockerell). Connecticut: 1 male, Colebrook, September 1 (W. M. Wheeler). HALICTUS NYMPHAEARUM Robertson. Massachusetts: 1 male, Woods Hole, (Eleth Cattell). HALICTUS HORTENSIS Lovell. Massachusetts: 1 male, Forest Hills, May 14 (collector not known). New York: 1 female, Garrison, (Eleth Cattell). Virginia: 3 males, East Falls Church, July 16-20 at flowers of Daucus carota and Cicuta maculata (S. A. Rohwer). HALICTUS INCOMPLETUS Crawford. New Mexico: 1 male, Aztec, September 19, 1898 (C. E. Mead). - 9G & = & “a Cy _ TRE a {oO MOAT ° - HOOKWORMS OF THE GENUS UNCINARIA OF THE DOG, FOX, AND BADGER. B. H. Ransom, Assistant Custodian, Helminthological Collections, United States National Museum. Looss in 1911 described, as a new species which he named Uncinaria polaris, a hookworm from Vulpes lagopus, North America. In the same paper he redescribed U neinaria criniformis originally re- ported by Goeze in 1782 from the European badger (Meles tarus). Furthermore, he concluded that Uncinaria stenocephala (Railliet) whose type host is the dog in Europe is identical with U. criniformis. The specimens (at least 12 in number) from which U. polaris was described were sent to Looss by Stiles many years previously (Looss, 1911, p. 194). The original material, Looss states (p. 218), bore the number 3250 and came from the Zoological Gardens, Washington, D. GC. The number 3250 evidently refers to a catalogue number of the Helminthological Collection of the United States National Museum, inasmuch as there are in these collections at the present time, labeled with this number, numerous specimens of hookworms which according to the label were collected from Vulpes lagopus at Washington, D. C., by Hassall, August, 1901. These specimens so far as I have examined them are all of one species and correspond closely to Looss’s description of Uncinaria polaris. Undoubtedly Looss’s specimens came from this lot of material and unquestionably the specimens now in the Museum Collections under the catalogue number 3250 belong to Looss’s species, U neinaria polaris. It does not appear in Looss’s paper whether he actually examined specimens of Uncinaria from dogs before arriving at the conclusion that Uncinaria stenocephala is identical with U. criniformis. Al- though he states in general terms that “ Uncinaria criniformis is common in canine animals in various parts of Europe ” (p. 194) and that it occurs “ in various Canidae and Mustelidae of mid and north- ern Europe” (p. 213), he does not say specifically that he has studied specimens from dogs. On the other hand he refers definitely to Un- cinaria criniformis from Meles taxus (p. 607) in connection with his drawings (figs. 105 and 106) of the mouth-capsule of this species. wee NS MEE hs esl pets ae) See ee eh ee es No. 2533—PROCEEDINGS U. S. NATIONAL Museum, VOL. 65, ART. 20. 1 2 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65. dn any case, irrespective of the possibility of the occurrence of the species, which Looss calls U. criniformis, in dogs, there is unques- tionably another species common in European dogs, which Railliet has called Uncinaria stenocephala, that is distinctly different from U. - criniformis of Meles tavus. Furthermore Uncinaria stenocephala in- stead of being the same species as U. criniformis is in reality the same as U. polaris. Not only does Railliet’s description of U. stenocephala in certain important respects (size of worms, maximum length of spicules, and tridigitation of terminal branches of dorsal ray of bursa) agree with what is found in the specimens of Uncinaria po- laris (U.S. N. M., 8250) and differing in these respects from what is found in U. criniformis, but specimens of Uncinaria from dogs in various parts of Europe corresponding to Railliet’s description of Uncinaria stenocephala agree among themselves and with U. polaris and differ from U. criniformis as described by Looss and as shown by several lots of specimens from Afeles tavus. For European speci- mens of U. stenocephala from dogs and U. criniformis from Meles taxus to compare with U. polaris I am indebted to Prof. P. Ciurea, Bucurest, Rumania; Prof. A. Henry, Alfort, France; Prof. J. E. W. Thle, Utrecht, Holland, and Prof. T. Pintner, Vienna, Austria. Readily recognizable differences between the two species involved, Uncinaria criniformis and U. stenocephala, including its synonym, U. polaris, are shown in the following brief descriptions. The descrip- tions are not intended to be complete but refer specially to characters that seem useful for diagnostic purposes. UNCINARIA CRINIFORMIS (Goeze, 1782). Specifie diagnosis —Uncinaria: Male about 5.5 (5.3 to 5.9) mm., female about 7.5 (6.8 to 8.2) mm. long. The ventral wall of the mouth capsule when viewed in optical section from the side is only shghtly curved as a rule (fig. 9). The boundary line between the thicker ventral portion and the thinner dorsal portion of the mouth capsule wall (side view) turns forward along the ventral side of the cord of tissue which terminates in the lateral cephalic papilla, and meets the anterior border of the mouth capsule almost at right angles (fig. 9,7). Esophagus of male about 0.55 mm. long, of female about 0.6 mm. long. Lateral lobes of male bursa only a little more than semicircular in shape. Medio-lateral ray slightly thicker than the postero-lateral ray and much thicker than the externo-lateral ray (fig. 10). Dorsal ray bifurcated distally, each branch bidigitate (fig. 11). Spicules 0.46 to 0.63 mm. long with rounded membranous tips. Tail of female 125 to 135 » long; tip of tail into which the caudal bristle is inserted almost ogival in outline (fig. 12). Vulva 4.5 to 5.5 mm. from anterior end of body. ART. 20. HOOKWORMS OF THE GENUS UNCINARIA—RANSOM. 3 Parasitic in intestine of Meles tawus in Europe. Not certainly known as yet to occur in other animals. UNCINARIA STENOCEPHALA (Railliet, 1884). Synonym.—Uneinaria polaris Looss, 1911. Specific diagnosis —Uncinaria: Male about 7 (5.6 to 8.5) mm., female about 10 (7.7 to 12) mm. long. The ventral wall of the mouth capsule when viewed in optical section from the side is con- siderably curved as a rule (figs. 1, 5). The boundary line between the thicker ventral portion and the thinner dorsal portion of the mouth capsule wall (side view) anteriorly continues to curve toward the dorsum and meets the anterior border of the mouth capsule obliquely after crossing the cord of tissue which terminates in the lateral cephalic papilla (figs. 1, 5, ~). Esophagus of male about 075 mm., of female about 0.85 mm. long. Lateral lobes of male bursa rather long, considerably more semi-oval than semicircular in shape. Medio-lateral ray of about the same width as the externo- lateral ray and the postero-lateral ray (figs. 2,6). Dorsal ray bifur- cated distally, each branch tridigitate (figs. 3, 7). Spicules 0.64 to 0.76 mm. long with sharply pointed tips. Tail of female 150 to 290 u long; tip of tail, into which the caudal bristle is inserted, bluntly rounded (figs. 4,8). Vulva 5 to 7.5 mm. from anterior end of body. Parasitic in the intestine of the dog in Europe (type host and type locality). Common in fur foxes in Northern North America. Has also been found in the dog in Alaska (Hadwen) and in the hog (in stomach) at Ottawa, Canada (Hadwen). REMARKS. A lateral view of the head is usually more readily secured in mounted specimens of U. criniformis and U. stenocephala and in my experience is more useful for diagnostic purposes than a dorsal view. Dorsal views give very variable pictures because of differences in the tilting of the head in different specimens, and comparisons of speci- mens and of drawings are more difficult than in the case of lateral views. It may be noted as of interest that Railliet’s drawing of the dorsal view of the head of Uncinaria stenocephala (see Railliet, 1893a, fig. 381) corresponds very well with the appearance frequently shown by specimens of U. polaris (U. S. N. M., 3250) which happen to be less tilted than in the view pictured by Looss (1911, fig. 108). Looss (1911, p. 213) states that the boundary line between the thicker ventral portion and the thinner dorsal portion of the mouth- capsule wall of U. polaris is nearly straight and he shows it but very slightly curved in his drawing (Looss, 1911, fig. 107). In full lateral views of the mouth-capsule of U. polaris (= U. stenocephala) from the fox (fig. 1, 7), and of U. stenocephala from the dog (fig. 5, a) I have found it more curved than Looss has described and figured it. 4 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou. 65. In Looss’s drawing (Looss, 1911, fig. 116) of the bursa of U. erini- jormis the postero-lateral ray is shown as thicker than the medio- lateral ray. In all the specimens I have examined the reverse is true (fig. 10). The lateral membranous ala of the spicule is more strongly de- veloped in U. criniformis than in JU, stenocephala and extends around the tip. In UW. stenocephala it narrows down and disappears before the tip of the spicule is reached. In the specimens that I have examined, the cuticle of Uncinaria stenocephala is usually considerably thicker than that of U. crini- formis. For example, on the tail of the female of the latter species it has not been found to exceed 5 yp in thickness, but commonly measures 7 or 8 » in thickness in the same region of the female of U. stenocephala. In both UY. ecriniformis and U. stenocephala the excretory pore, nerve ring and cervical papillae are located in the same general region of the neck, but vary more or less in their relative positions in different specimens in both species. I have failed to find constant differences in these characters between the two species. The caudal pores on the tail of the female are about 45 » from the tip (excluding the caudal bristle) in U. stenocephala, and in the only case measured in U. criniformis were 30 yw from the tip. It is of interest to note that as yet Uncinaria stenocephala is not known to have become established as a parasite of the dog in the United States except in Alaska. On the other hand it is a common parasite of the foxes on fur farms in the Northern United States, including Alaska and in Canada, and is one of the most serious pests with which fox raisers have to contend. Thus far, the only cases of this parasite in dogs in North America of which I have knowledge are those seen by Hadwen in Alaska. The same observer has found U. stenocephala in a hog at Ottawa, Canada (Ransom, 1921, p. 190). ADDENDUM. While the present paper was in the hands of the printer two papers, one by Fiilleborn (1924) and one by Cameron (1924) have appeared which bear upon the question of the identity of Uncinaria polaris and U. stenocephala. Both authors are of the opinion that the two forms belong to the same species, an opinion which accords with my own findings based upon a study of the material from which Looss obtained his specimens of U. polaris. Cameron appears to be doubtful whether the form described by Goeze as Ascaris criniformis should be considered an identifiable species. In view of the fact, however, that a well-defined species of Uncinaria occurs in the European badger which seems in all probability to be the same as that described by Goeze there appears to be no good reason i oO ic adil Ml ta ‘el pe ae hainateiees oem Cake ae ota, «oe a eh wroioyent da the free etate: Reet aad eer dork, Maya ye ration, Ey Oars, vel 4. pr EHS = Baits ua ahs eee ers: j Les ye cot & re 43 aa, 7 \ AER raseptlioat anh Peg t eo? tented by \? 1 uae, terrier: send i ; ; LY Haein . j ' prea, ¢ a nascbl ij » on : : Ns. Br, SOS es y om oie Duties. irons Leth wide... EBT. Sie tah, aa. a a PEMitSal HE Ot ie Ores. CEPR BL. Sicind, (G8. So) ir Shecee ef Pa Se tel Side). MEN MM, Sele, Aull Clow | : easy ME RRS. POM eecieay FoI TOES, eft i. CU Seperey ood, 7 pnmey i a lh nes THGrs Tekt BIGA. a Ms, teri, Sat: = GM Db vi ot techie. RANA Mam a Reta ortel LAMA 23,909 BHT 30, 2MAOW>O0H “ie | “py Na siya no Secon: sot ak SS Ne rete. Cant ae, SMe inte, Tron Ter elite: 1). RNS. oben Penk LPS, Peete rie Ci, male bagen. 2.80, len, Cot AASB a ema RRL Ot Leen ke Crem Lettaldn. QUAN MM, Sates, Colt, Win, ee U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 65, ART. 20 PL I / 4 a 12. | Th Onomea Lhemania Qheinavia polatis S7E70C: l> ciinitormis. (= sfenocephela) Log / for. HOOKWORMS OF THE DOG, FOX, AND BADGER FOR EXPLANATION OF PLATE SEE PAGE 5 ART. 20. HOOKWORMS OF THE GENUS UNCINARIA—RANSOM. a why it should not be accepted as belonging to Goeze’s species until it can be shown to be different. REFERENCES. Cameron, T. W. M. 1924.—Dochmoides: a new genus for the hookworm “Uncinaria’”’ stenoce- phala Railliet. Journ. Helminth., London, vol. 2, pp. 46-50, figs. 1-5. FWLLEBORN, FRIEDRICH. 1924.—Bemerkungen tiber die Identifikation von “ Hakenwiirmern.” Arch. f. Schiffs-u. Tropen-Hyg., Leipzig, vol. 28, pp. 12-15, pl. 1, figs. 1-6. Looss, A. 1911a.—The anatomy and life history of Agchylostoma duodenale Dub. A monograph. Part. 2. The development in the free state. Rec. School Med., Ministry Education, Egypt, Cairo, vol. 4, pp. 159- 613, pls. 11-19, figs. 101-208, photograms 7-41. RAILLIET, ALCIDE. 1893a—Traité de zoologie médicale et agricole. 2 éd. [fase. 1]. 786 pp., 494 figs. 8°. Paris. RANsoM, B. H. 1921.—[ Unusual parasites of the domestic hog] [Read before Helmintho- logical Society of Washington, Nov. 20, 1920]. Journ. Parasi- tology, Urbana, Ill., vol. 7 (4), June, p. 190. 1922.—_[ Notes on hookworms] [Read before Helminthological Society of Washington, May 14, 1921]. Journ. Parasitology, Urbana, Ill, vol. 8 (2), Dec., 1921, p. 96. EXPLANATION OF PLATE. All figures drawn with camera lucida at same magnification as indicated by scale on plate. ABBREVIATIONS. e.l., externo-lateral ray. l. p., lateral cephalic papilla. m.1., medio-lateral ray. p.tl., postero-lateral ray. g., boundary line between thicker ventral portion and thinner dorsal portion of lateral wall of oral capsule. Fics. 14.—Uncinaria polaris (=stenocephala). Fic. 1.—Head from left side. U.S.N.M. Helm. Coll. 3250. 2.—Male bursa from left side. U.S.N.M. Helm. Coll. 3250. 3.—Dorsal ray of male bursa. U.S.N.M. Helm. Coll. 3250. 4.—Tail of female from left side. U.S.N.M. Helm. Coll. 3250. Fias. 5-8.—Unecinaria stenocephala. Fic. 5.—Head from left side. U.S.N.M. Helm. Coll. 19,326. 6.—Male bursa from left side. U.S.N.M. Helm. Coll. 19,326. 7.—Dorsal ray of male bursa. U.S.N.M. Helm. Coll. 19,330. 8.—Tail of female from left side. U.S.N.M. Helm. Coll. 19,330. Fies. 9-12.—Uneinaria criniformis. Fic. 9.—Head from left side. U.S.N.M. Helm. Coll. 3392. 10.—Male bursa from left side. U.S.M.N. Helm. Coll. 24,788. 11.—Dorsal ray of male bursa. U.S.N.M. Helm. Coll. 19,332. 42.—Tail of female from left side. U.S.N.M. Helm. Coll. 3392. A NEW GENUS AND SPECIES OF TWO-WINGED FLIES OF THE FAMILY CHLOROPIDAE INJURING MANIHOT IN BRAZIL. By J. M. Avpricu, Associate Curator, Division of Insects, United States National Museum. The species herein described was received by the Bureau of Ento- mology for identification, from Prof. Carlos Moreira of the Institudo Biologico de Defesa Agricola, Rio Janeiro, who states that it is a bad miner of Cassava, Manihot utilissima in Brazil. TELEOCOMA, new genus. Head broad and flat; antennae short, third joint almost circular in outline ,with slender bare arista; face transversely concave, epis- toma not prominent; palpi normal; proboscis short, the terminal joint folding back but short; front wide; eye shorter vertically than longitudinally. Thorax not grooved dorsally, decidedly longer than wide, the scutellum flat above, subtriangular but rounded apically, with only microscopic denticles from which the bristles arise. Wing with normal venation, the costa extending to fourth vein. Hind tibia without any distinct spine at tip. Bristles rather strongly developed, especially two notopleurals, two humerals, one supra- alar, one intraalar, one posterior dorsocentral (the last three close to the scutellum), one apical pair on scutellum. There are also two vertical pairs, one postvertical, and a small pair of vibrissae. Genotype.—Teleocoma crassipes, new species. TELEOCOMA CRASSIPES, new species. Male—Front black above, yellow beyond middle, at vertex much wider than one eye; ocellar triangle small, not reaching half way to antennae; frontal bristles minute; antennae wholly reddish yellow; face and bucca (below eye) white, the latter darker along lower and posterior edge, and about one-third the eye-height; palpi yellow. Thorax black, the sides polished, the dorsum with a tinge of bronze, covered with even, short, pale yellow hairs arising from evi- No. 2534—ProceEEDINGS U. S. NATIONAL Museum, VOL. 65, ART. 21. i 2 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 65- dent punctures. The width at humeri is to the length to scutellar suture as 23 to 29, by micrometer. Scutellum on its flat upper surface with pale hairs like the mesonotum, but more strongly punctured; at the tip are two parallel bristles and on each side two or three small hairs, all arising from very minute, microscopic denticles. Halteres. white, stem yellow. Abdomen narrow and tapering, the apex curved downward; the first and second segments pale yellow above except at the sides, the following three wholly black, the sides of all but the first with long, silky, whitish hairs, the second also bears black spiny hairs at the side. Venter membraneous, whitish. Legs mostly yellowish, but the hind femora and tibiae and the apices of all the tarsi are black or blackish, and the front femora and tibiae are slightly infuscated. The front femora are thickened, and have long pale hair below; the front tibiae have a heavy fringe of brownish hair on the outer hind side, which extends on the first and second tarsal joints. The hind femora are large, greatly thick- ened and curved; their tibiae are rather stout and have on the outer front side numerous long curled pale hairs extending forward, over- lapping the femora in the flexed position. Wing hyaline, normal, fourth vein reaching the margin barely behind, the apex. Female—Head and thorax as in male; the pale spot at base of abdomen is smaller though distinct, leaving a wider black margin at sides. The abdomen and legs do not have the long yellow hair characteristic of the male; the front femora are yellow and hardly thickened at all. The hind femora, however, are almost as large as in the male, the hind tibiae as in the male; the hind tarsi black ex- cept the contrasting yellow basal joint. Length of male 4 mm., of female 3.2 mm. Described from one male and three females received from Profes- sor Moreira as stated above. Type.—Male, Cat. No. 26487, U.S.N.M. Two paratypes are returned to the sender for preservation in a Brazilian museum. THE FOSSILS OF THE LOWER SAN PEDRO FAUNA OF THE NOB HILL CUT, SAN PEDRO, CALIFORNIA By T. 8S. Oxproyn, Of Stanford University, California INTRODUCTION The cut through Nob Hill at San Pedro exposed a large deposit of the Lower San Pedro series of the Pleistocene. In July, 1918, the steam shovel had worked its way down to the bed, uncoveririg no shells of the upper series in the cut, except a few at the south end. This was especially good, as heretofore in most places where the lower series was exposed, the upper series had cropped out above it; as at Deadman’s Island. This made collecting in the latter place from the lower series rather uncertain, as the upper would cave down in quantities from the action of the wind and rain, settle on the edge of the lower, and on becoming packed, looked as if it belonged there. This immense deposit, extending the whole length and breadth of the cut and an unknown distance further, was nearly 6 feet thick, and in the center of the cut, where it had not been graded down, was 20 feet below the surface and dipped to the northeast. The first layer commencing at the bottom was about 15 inches thick and sparsely filled with shells, mostly bivalves. Next above there was a bed of bivalves about 4 inches thick, composed mostly of Afacoma nasuta Conrad, and Macoma secta Conrad; these were very plentiful and in a natural condition as they had lived, and had not been disturbed, but were covered up by about 17 inches of sand in which there were no shells. The next layer was about 4 inches thick, composed of Ostrea lurida Carpenter, and Aletes squamigerus Carpenter. While the life of the bed of Afacoma was a short one, as none of them had reached a maximum growth, the bed of oysters had apparently lasted for a much longer period of time. This bed, like that of the Macomas, was not disturbed but covered up in a natural position. The next layer is a conglomerate mass two feet thick, very compact but not hardened; washed up by some storm, it-contains a great many species from deep water. The next and last layer was about 17 inches thick, No. 2535.—PROCEEDINGS U. S. NATIONAL Museum, VOL. 65, ART. 22. 1 2 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 composed of loose washed sand and small drift shells washed high on the beach. Judging from the species that lived here, in the two natural beds mentioned, this place must have been an estuary or flat in a protected place, though exposed to unusually severe storms; a place such as existed at Tims Point 30 or 40 years ago. Of the 242 species of shells found in the Nob Hill cut, 115 are found in Puget Sound and north of there. In our four seasons’: dredging and shore collecting near Friday Harbor, Wash., we have found a great many of them living. Our dredging has been mostly in the San Juan Channel, where I think more of the Nob Hill fossil species are found living, than anywhere else. The water in the channel is very cold, because the current comes in from the ocean through the Strait of Juan de Fuca. The water in Departure Bay about 75 miles north of there will average 10 degrees warmer the year round, according to Doctor Fraser who is in charge of the Do- minion Marine Biological Station. After the Lower San Pedro time and the climate of California began to get warmer, many of the mol- lusks went north or sought the cold waters of a greater depth. There seems to be a streak of the northern mollusks in about 100 fathoms all along the coast as far south as Lower California. It isa fact that there are quite a few southern species in the lower San Pedro, and also some northern species in the upper; they all lived in the lower San Pedro during that epoch. They did not all go north, some accustomed themselves to the change in temperature, and are found living now near San Pedro. Some withstood the change for a long time and are found in the upper series, but finally died out, and are not now found living here except in very deep water. Acknowledgments are due to Dr. Paul Bartsch, of the United States National Museum, and to Dr. W. H. Dall, of the United States Geological survey, for assistance in the identification of some doubt- ful species and general criticism of the manuscript. I am also deeply indebted to Dr. J. P. Smith, of the Department of Geology in Stanford University, for kindly criticism and much help. ‘Types of the new forms are in the Oldroyd Collection or that of the National Museum. LIST OF SHELLS FROM THE LOWER SAN PEDRO PLEISTOCENE SERIES FROM THE NOB HILL CUT, SAN PEDRO, CALIFORNIA. Family NUCULIDAE. Genus NUCULA Lamarck, 1799. Subgenus AcILA H. and A. Adams, 1858. NUCULA CASTRENSIS Hinds, 1843, three small valves. Living, Bering Sea—San Diego. ART. 22 SAN PEDRO FAUNA—OLDROYD. Family LEDIDAE. Genus LEDA Schumacher, 1817. LEDA TAPHRIA Dall, 1897, six valves. Living, Bodega Bay, California—Lower California. LEDA HAMATA Carpenter, 1864, one small valve. Living, Puget Sound—Panama Bay. LEDA CELLULITA Dall, 1896, one specimen. Living, Puget Sound. Family ARCIDAE. Genus GLYCYMERIS Da Costa, 1778. GLYCYMERIS SEPTENTRIONALIS Middendorff, 1849. Living, Aleutian Islands, Alaska—Puget Sound. ? Family PHILOBRYIDAE. Genus PHILOBRYA Carpenter, 1872. PHILOBRYA SETOSA Carpenter, 1864, one valve. Living, Forrester Island, Alaska—Gulf of California. Family OSTREIDAE. Genus OSTREA Linnaeus, 1758. OSTREA LURIDA Carpenter, 1864, very plentiful. Living, Sitka, Alaska—Cape San Lucas. Family PECTINIDAE. Genus PECTEN Muller, 1776. Subgenus CHLAMYS Bolten, 1798. PECTEN HASTATUS Sowerby, 1843, four small valves. Living, Monterey—Newport, California, deep water. PECTEN JORDANI Arnold, 1903, three valves. Living, Puget Sound. Section PATINOPECTEN Dall, 1898. PECTEN CAURINUS Gould, 1850, two broken valves. Living, Wrangell, Alaska—Oregon and Puget Sound. Section LEPTOPECTEN Verrill, 1897. PECTEN LATIAURITUS Conrad, 1837, not rare. Living, Monterey, California—Lower California. Family MYTILIDAE. Genus MYTILUS Linnaeus, 1758. MYTILUS CALIFORNIANUS Conrad, 1837, part of one valve. Living, Aleutian Islands—Lower California. 45554—25—Proe.N.M.vol.65——-41 4 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 Genus SEPTIFER Recluz, 1848. SEPTIFER BIFURCATUS (Conrad) Reeve, 1837, ten valves. Living, Crescent City, California—Gulf of California. Genus MODIOLUS Lamarck, 1799. MODIOLUS MODIOLUS Linnaeus, 1858, part of one valve. Living on the west coast from the Arctic-San Pedro, California. MODIOLUS CAPAX Conrad, 1837, one valve. Living, Santa Barbara, California—Peru. Genus BOTULA Morch, 1853. Subgenus ADULA H. and A. Adams, 1857. BOTULA FALCATA Gould, 1851, three specimens. Living, Coos Bay, Oregon—San Diego, California. Genus CRENELLA Brown, 1827. CRENELLA DECUSSATA Montagu, 1808, about 100 valves. Living, Bering Sea—San Pedro, California. Family THRACIIDAE. Genus CYATHODONTA Conrad, 1848. CYATHODONTA PEDROANA Dall, 1916, one valve and several pieces. Living, San Pedro and Catalina Island, California. Family LYONSITDAE. Genus LYONSIA Turton, 1822. LYONSIA CALIFORNICA Conrad, 1837, plentiful. Living, Puget Sound—Lower California. Genus MYTILIMERIA Conrad, 1837. MYTILIMERIA NUS£TALLII Conrad, 1837, one valve. Living, Vancouver Island—San Diego, California. Family VERTICORDIIDAE. Genus VERTICORDIA Wood, 1844. VERTICORDIA ORNATA Orbigny, 1846, three valves. Living, Catalina Island, California—Panama. Family CARDITIDAE. Genus CARDITA (Bruguiére) Lamarck, 1799. Section CARDITAMERA Conrad, 1838. CARDITA SUBQUADRATA Carpenter, 1865, about thirty valves. Living, Queen Charlotte Islands—Lower California. ART. 22 SAN. PEDRO FAUNA—OLDROYD. Genus VENERICARDIA Lamarck, 1801. VENERICARDIA VENTRICOSA Gould, 1850, thirteen valves. Living, Alaska—Lower California. Subgenus MIODONTIscuUs Dall, 1903. VENERICARDIA PROLONGATA Carpenter, 1864, four valves. Living, Alaska—San Diego, California. Family THYASIRIDAE. Genus THYASIRA (Leach in) Lamarck, 1818. THYASIRA GOULDII Philippi, 1845, one valve. Living, Alaska—Lower California. Family DIPLODONTIDAE. Genus DIPLODONTA Bronn, 1831. DIPLODONTA ORBELLA Gould, 1852, twelve valves. Living, Bering Sea—Gulf of California. Family LUCINIDAE. Genus PHACOIDES Gray, 1847. Subgenus Lucinisca Dall, 1901. PHACOIDES NUTTALLII Conrad, 1837, Plentiful. Living, Santa Barbara, California—Mexico. Subgenus LUCINOMA Dall, 1901. PHACOIDES ANNULATUS, Reeve, 1850, var. densiliratus Dall, 1919. Living, Sitka, Alaska—Esteros Bay, California. Subgenus CALLUCINA Dall, 1901. Section EPILUCINA Dall, 1901. PHACOIDES CALIFORNICUS Conrad, 1837, pientiful. Living, Crescent City, California—Lower California. Subgenus PARVILUCINA Dall, 1901. PHACOIDES TENUISCULPTUS Carpenter, 1864, six valves. Living, Bering Sea—Coronado Islands. PHACOIDES APPROXIMATUS Dall, 1901, about 106 valves. Living, Monterey, California—Panama. Family LEPTONIDAE. Genus KELLIA Turton, 1822 KELLIA LAPEROUSII Deshayes, 1839, six valves. Living, Bering Sea-San Diego, California 6 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, 65 Family CARDIIDAE. Genus CARDIUM Linnaeus, 1757. Subgenus TRACHYCARDIUM Morch, 1853. CARDIUM QUADRAGENARIUM Conrad, 1837, valve, not reported before from the Lower San Pedro. Living, Santa Barbara, California—-Todos Santos Bay, Lower California. Subgenus CERASTODERMA Morch, 1853. CARDIUM CORBIS Martyn, 1784, quite plentiful, but all shells thin, fragile, broken. Living, Bering Sea—San Francisco, California. Genus PROTOCARDIA Beyrich, 1845. PROTOCARDIA CENTIFILOSA Carpenter, 1864, three valves. Living, Departure Bay, British Columbia—Lower California. Genus TIVELA Link, 1807. Subgenus PACHYDESMA Conrad, 1854. TIVELA STULTORUM Mawe, 1923, one valve. Living, Santa Cruz—Lower Californa. a Genus TRANSENNELLA Dall, 1883. TRANSENNELLA TANTILLA Gould, 1852, very plentiful. Living, Sitka Harbor, Alaska—Lower California. Genus SAXIDOMUS Conrad, 1837. SAXIDOMUS NUTTALLII Conrad, 1837, not rare. Living, Humboldt Bay to San Diego, California. Genus PAPHIA Bolten, 1798. Subgenus PRoTOTHACA Dall, 1902. Section PROTOTHACA Dall, 1902, s. s. PAPHIA STAMINEA Conrad, 1837, plentiful. Living, Bering Sea—Lower California. Family PETRICOLIDAE. Genus PETRICOLA Lamarck, 1801. PETRICOLA CARDITOIDES Conrad, 1837, plentiful. Living, Vancouver Island—San Pedro, California. Family TELLINIDAE. Subgenus MOERELLA Fischer, 1887, TELLINA SALMONEA Carpenter, 1864, not plentiful. Living, Aleutian Islands-San Pedro, California. ART. 22 SAN PEDRO FAUNA—OLDROYD, Subgenus ANGULUS Megerle, 1811. TELLINA CARPENTERI Dall, 1900, not plentiful. Living, Bering Sea—Gulf of California. Subgenus OUDARDIA Monterosato, 1884. TELLINA BUTTONI Dall, 1900, eight valves. Living, Alaska-—Gulf of California. Subgenus PERONIDIA Dall, 1900. TELLINA BODEGENSIS Hinds, 1844, not plentiful. Living, Queen Charlotte Islands, British Columbia—Gulf of California Genus METIS H. and A. Adams, 1856. METIS ALTA Conrad, 1837, one valve. Living, Santa Barbara—San Diego, California. Genus MACOMA Leach, 1819. MACOMA NASUTA Conrad, 1837, very plentiful. Living, Kodiak Island, Alaska—Lower California. MACOMA INQUINATA Deshayes, 1854, four valves. Living, Bering Sea—Monterey, California. Section REXITHAERUS Conrad, 1869. MACOMA INDENTATA Carpenter, 1864, five valves. Living, San Pedro-San Diego, California. Family SEMELIDAE. Genus SEMELE Schumacher, 1817. SEMELE RUBROPICTA Dall, 1871, one valve. Living, Bering Sea—Lower California. SEMELE INCONGRUA Carpenter, 1864, fifteen valves. Living, Monterey—Coronado Islands. Genus CUMINGIA Sowerby, 1833. CUMINGIA LAMELLOSA Sowerby, 1833, plentiful. Living, Crescent City, California—Peru. Family DONACIDAE. Genus DONAX Linnaeus, 1758. DONAX CALIFORNICA Conrad, 1837, two valves. Living, Santa Barbara—Lower California. Family PSAMMOBIIDAE. Genus PSAMMOBIA Lamarck, 1818. Subgenus GOBRAEUS Leach, 1852. PSAMMOBIA CALIFORNICA Conrad, 1848, not plentiful. Living, Aleutian Islands—San Diego, California. 8 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, 65 Genus SANGUINOLARIA Lamarck, 1799. Section NUTTALLIA Dall, 1897. SANGUINOLARIA NUTTALLII Conrad, 1837, not rare. Living, San Pedro, California-Magdalena Bay, Lower California. Family SOLENIDAE. Genus SOLEN (Linnaeus) Scopoli, 1777. SOLEN SICARIUS Gould, 1850, four valves. Living, Vancouver Island—Lower California. Family MACTRIDAE. Genus SPISULA Gray, 1838. Subgenus SYMMORPHOMACTRA Dall, 1894. SPISULA PLANULATA Conrad, 1837, twelve valves. Living, Monterey—Cape San Lucas, Lower California. Genus SCHIZOTHAERUS Conrad, 1853. SCHIZOTHAERUS NUTTALLII Conrad, 1837, rare. Living, Alaska-San Diego, California. Family MYACIDAE. Genus CRYPTOMYA Conrad, 1849. CRYPTOMYA CALIFORNICA Conrad, 1837, plentiful. Living, Alaska—Mexico. Family SAXICAVIDAE. Genus SAXICAVA Fleuriau, 1802. SAXICAVA ARCTICA Linnaeus, 1767, two valves. Living, Alaska—Panama. Also Atlantic. Family PHOLADIDAE. Genus PHOLADIDEA Turton, 1848. PHOLADIDEA PENITA Conrad, 1837, plentiful. Living, Alaska-San Diego, California. Family TEREDIDAE. TEREDO TUBES, species indeterminable. Family DENTALIIDAE. Genus DENTALIUM Linnaeus, 1758. DENTALIUM NEOHEXAGONUM Sharp and Pilsbry, 1897, not rare. Living, Monterey, California—Central America. DENTALIUM PRETIOSUM Sowerby, 1860, not rare. Living, Forrester Island, Alaska-San Diego, Calif. ART. 22 SAN PEDRO FAUNA—OLDROYD. Y Genus CADULUS Philippi, 1844. CADULUS HEPBURNI Dall, 1897, not rare. Living, Victoria, British Columbia, to Monterey, California. Family ACTEONIDAE. Genus ACTEON Montfort, 1810. Subgenus RicTaxis Dall, 1871. ACTEON PUNCTOCOELATUS Carpenter, 1864, one specimen. Living, Vancouver Island, British Columbia-—Magdalena Bay, Lower Cali- fornia. Family ACTEOCINIDAE. Genus ACTEOCINA Gray, 1847. ACTEOCINA PEDROENSIS, new species, plentiful. ACTEOCINA EXIMIA Baird, 1863, four specimens. Living, Kodiak Island, Alaska—Puget Sound. ACTEOCINA INFREQUENS C. B. Adams, 1852, not rare. Living, Santa Monica, California—Panama. ACTEOCINA CEREALIS Gould, 1853, not rare. Living, Santa Barbara-San Diego, California. ACTEOCINA TUMIDA T. S. Oldroyd, 1922. Not found living. Genus RETUSA Brown, 1837. Section COLEOPHYSIS Fischer, 1883. RETUSA HARPA Dall, 1871, not rare. Living, Queen Charlotte Islands, British Columbia-San Diego, California. Genus VOLVULELLA Newton, 1891. VOLVULELLA COOPERI Dall, 1819, not rare. Living, Catalina Island-Scammon Lagoon, Lower California. Family SCAPHANDRIDAE. : Genus CYLICHNELLA Gabb, 1872. CYLICHNELLA ALBA Brown, 1827, two specimens. Living, Arctic Ocean—-San Diego, California. Family AKERIDAE. Genus HAMINOEA Turton, 1830. HAMINOEA DALLI Bartsch, new species, plentiful. Living, Santa Barbara, California—Mexico. HAMINOEA VESICULA Gould, 1855, not rare. Living, Vancouver Island, British Columbia-Gulf of California. Family SIPHONARIIDAE. Genus WILLIAMIA Monterosato, 1884. WILLIAMIA VERNALIS Dall, 1870, three specimens. Living, Crescent City, California-San Diego. 10 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 Family CONIDAE. Genus CONUS Linnaeus, 1758. CONUS CALIFORNICUS Hinds, 1844, plentiful. Living. Farallones Islands, California—Ballenas Lagoon, Lower California. CONUS CALIFORNICUS FOSSILIS T. S. Oldroyd, 1921, not rare. Not found living. Family TURRITIDAE. Genus MONILIOPSIS Conrad, 1865. MONILIOPSIS INCISA OPHIODERMA Dall, 1908, not rare. Living, Bolinas Bay, California—Ballenas Lagoon, Lower California. Genus ANTIPLANES Dall, 1902. ANTIPLANES PERVERSA Gabb, 1865. Living, Forrester Island, Alaska—San Diego, California. Genus BORSONELLA Dall, 1903. BORSONELLA BARTSCHI Arnold, 1903, six specimens. Living, San Pedro-San Diego. Genus PHILBERTIA Monterosato, 1884. PHILBERTIA CANFIELDI Dall, 1871, five specimens. Living, Crescent City, California-Laguna Beach. Genus GLYPHOSTOMA Gabb, 1873. GLYPHOSTOMA CONRADIANA Gabb, 1869, one specimen. Living, San Pedro, California. Genus MANGILIA Risso, 1826. MANGILIA ANGULATA Carpenter, 1865, plentiful. Living, Puget Sound-Gulf of California. MANGILIA (KURTZIELLA) ARTEAGA Dall and Bartsch, 1910, two specimens. . Living, Puget Sound. Subgenus CLATHROMANGILIA Monterosato, 1884. CLATHROMANGILIA RHYSSA Dall, 1919, one specimen. Living, San Diego, California. Genus CYTHARELLA Monterosato, 1875. Section CYTHARELLA s,s. CYTHARELLA BRANNERI Arnold, 1903, numerous. Living, Panama. Genus DAPHNELLA Hinds, 1844. DAPHNELLA FUSCOLIGATA Dall, 1871, one specimen. Living, Monterey-—Sam Diego, California. ART. 22 SAN PEDRO FAUNA—OLDROYD. 11 Family CANCELLARIIDAE. Genus ADMETE Kroyer, 1842. ADMETE RHYSSA Dall, 1919, one specimen. Living, Santa Rosa Island, California—South Coronado Island. Family OLIVELLIDAE. Genus OLIVELLA Swainson, 1840. OLIVELLA BIPLICATA Sowerby, 1825, typical, not rare. Living, Monterey—Pismo Beach, California. OLIVELLA BOETICA Carpenter, 1864, typical, plentiful. Living, Vancouver Island and Puget Sound. OLIVELLA PEDROANA Conrad, 1855, twelve specimens. Living, Puget Sound—Cape San Lucas, Lower California. Family MARGINELLIDAE. Genus MARGINELLA Lamarck, 1799. MARGINELLA JEWETTII Carpenter, 1857, new variety NANELLA; plentiful. Living, Monterey, California—Lower California. MARGINELLA SUBTRIGONA Carpenter, 1865; nine specimens. Living, Monterey—San Diego, California. Genus CYPRAEOLINA Cerulli-Irelli, 1911. CYPRAEOLINA MARGARITULA Carpenter, 1865; not rare. Living, Cape San Lucas—Mazatlan, Mexico. Family MITRIDAE. Genus MITROMORPHA A. Adams, 1865. MITROMORPHA FILOSA Carpenter, 1865; one specimen. Living, Monterey, California—Gulf of California. Family FASCIOLARIIDAE. Genus FUSINUS Rafinesque, 1815. Section HEILPRINIA Grabau, 1904. FUSINUS MONKSAE Dall, 1915, ten specimens. Living, British Columbia—Lower California. Family ALECTRIONIDAE. Genus ALECTRION Montfort, 1810. Section SCHIZOPYGA Conrad, 1850. ALECTRION FOSSATUS Gould, 1849; twelve specimens. Living, Vancouver Island—Cerros Island, Lower California. ALECTRION MENDICUS Gould, 1849; plentiful. Living, Kodiak Island, Alaska—Magdalena Bay, Lower California. 45554—25— Proc.N.M.vol.65——42 12 PROCEEDINGS OF THE NATIONAL MUSEUM. Vou. 65 ALECTRION COOPERI Forbes, 1850; plentiful. Living, Puget Sound—San Diego, California. ALECTRION COOPERI, var. INDISPUTABILIS I. S. Oidroyd, 1921; plentiful. Living, Puget Sound—San Diego, Californa. ALECTRION COOPERI, var. WOODWARDI Forbes, 1850; not rare. Living, Puget Sound—San Pedro, California. ALECTRION PERPINGUIS Hinds, 1844; plentiful. Living, Vancouver Island, British Columbia—Cerros Island, Lower Cali- fornia. Family COLUMBELLIDAE. Genus COLUMBELLA Lamarck, 1799. Subgenus ALIA H. and A. Adams, 1853. COLUMBELLA TUBEROSA Carpenter, 1865; new variety MAJOR; plentiful. Living, Forrester Island, Alaska—Gulf of California. COLUMBELLA CALIFORNIANA Gaskoin, 1852; plentiful. Living, Forrester Island, Alaska—Salina Cruz, Mexico. COLUMBELLA CARINATA Hinds, 1844; plentiful. Living, San Francisco Bay—Cape San Lucas, Lower California. Genus ANACHIS Adams, 1853. ANACHIS PENICILLATA Carpenter, 1865; ten specimens. Living, San Pedro, California—Gulf of California. Genus NITIDELLA Swainson, 1840. NITIDELLA GOULDII Carpenter, 1857; twenty specimens. Living, Kodiak Island, Alaska—San Diego, California. Genus AESOPUS Gould, 1864. AESOPUS IDAE Bartsch, 1918, one specimen, the type. Not reported living. Genus AMPHISSA H. and A. Adams, 1853. AMPHISSA VERSICOLOR LINEATA Stearns, 1872; not rare. Living, Monterey, California. Family MURICIDAE. Genus TRITONALIA Fleming, 1828. TRITONALIA LURIDA Middendorff, 1849; two specimens. Living, Forrester Island, Alaska—San Diego, California. TRITONALIA INTERFOSSA Carpenter, 1864; three specimens. Living, Alaska—San Diego, California. TRITONALIA INTERFOSSA, var. BETA Carpenter, 1864; plentiful. Living, Monterey, California. TRITONALIA KEEPI Arnold, 1903; ten specimens. Not reported living. ART. 22 SAN PEDRO FAUNA—OLDROYD. 15) Genus TROPHON Montfert, 1810. Subgenus NEPTUNEA (Bolten, part, 1798) Dall, 1902 TROPHON MULTICOSTATA Eschscholtz, 1829; not rare. Living, Bering Sea—San Diego, California. TROPHON STUARTI E. A. Smith, 1880; three specimens. Living, Alaska—San Diego, California. Family EPITONIIDAE. Genus EPITONIUM Bolten, 1798. Subgenus OPALIA H. Adams, 1858. EPITONIUM WROBLEWSKII Méorch, 1876; not rare. Living, Forrester Island, Alaska—San Diego, California. Subgenus NITIDOSCALA De Boury, 1909. EPITONIUM INDIANORUM Carpenter, 1856; not rare. Living, Forrester Island, Alaska—Todos Santos Bay, Lower California. EPITONIUM TINCTUM Carpenter, 1865; not rare. Living, Monterey, California—Gulf of California. EPITONIUM SUBCORONATUM Carpenter, 1866; eighteen specimens. Living, Vancouver Island, British Columbia-—San Diego, California. EPITONIUM CREBRICOSTATUM Carpenter, 1866; two specimens. Living, Vancouver Island-Gulf of California. EPITONIUM CAAMANOI Dall and Bartsch, 1910; four specimens. Living, Vancouver Island—San Pedro, California. EPITONIUM CONTINUATUM, new species; two specimens. Not known living. Section CRISPOSCALA De Boury, 1909. EPITONIUM ACROSTEPHANUM Dall, 1908; one specimen. Living, Monterey, California—Coronado Islands. Family MELANELLIDAE. Genus MELANELLA Bowdich, 1822. Section MELANELLA s,. s. MELANELLA THERSITES Carpenter, 1864; five specimens. Living, Monterey, California-San Geronimo Island, Lower California. MELANELLA PREFALCATA Bartsch, 1917; one specimen. Not reported living. MELANELLA FOSSILIS Bartsch, 1918; one specimen. Not reported living. Family PYRAMIDELLIDAE. Genus TURBONILLA Risso, 1826. TURBONILLA PECORA, new species. Five specimens. Not known living. 14 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 Subgenus STRIOTURBONILLA Sacco, 1892. TURBONILLA ASSER Dall and Bartsch, 1909; four specimens. Living, Redondo Beach to San Diego, California. TURBONILLA ARESTA Dall and Bartsch, 1909, one specimen. Living, Santa Rosa Island to San Diego, California. Subgenus CHEMNITZIA Orbigny, 1839. TURBONILLA AEPYNOTA Dall and Bartsch, 1909; two specimens. Living, San Pedro to San Martin Island, Lower California. Subgenus PyRGOLAMPROS Sacco, 1892. TURBONILLA COLLISELLAE, new spccies; numerous. Not known living. TURBONILLA IDAE, new species; abundant. Not known living. TURBONILLA RINELLA Dall and Bartsch, 1910; one specimen. Living, Barkley Sound, Vancouver Island. Subgenus PYRGISCUS Philippi, 1839. TURBONILLA TENUICULA Gould, 1853; nine specimens. Living, Monterey to Point Abreojos, Lower California. TURBONILLA HIMERTA, new species; five specimens. Not known living. Subgenus MorMuLA A. Adams, 1854. TURBONILLA EPIPHANIA, new species; thirty specimens. Not known living. Subgenus BARTSCHELLA Iredale, 1917. TURBONILLA LAMINATA Carpenter, 1856; numerous. Living, San Pedro, California, to Point Abreojos, Lower California. Genus ODOSTOMIA Fleming, 1817. Subgenus CHRYSALLIDA Carpenter, 1856. ODOSTOMIA GOMPHINA, new species; two specimens. Not known living. ODOSTOMIA SCELERA, new species; nine specimens. Not known living. Subgenus IvARA Dall and Bartsch, 1903. ODOSTOMIA AMAVA, new species; one specimen. Not known living. Subgenus EvALEA A. Adams, 1860. ODOSTOMIA TERSA, new species; six specimens. Not known living, ODOSTOMIA ITHEA, new species; two specimens. Not known living, arr. 22 SAN PEDRO FAUNA—OLDROYD. 15 ODOSTOMIA MANCA, new species; numerous. Not known living, ODOSTOMIA CIVITELLA, new species; sixteen specimens. Not known living, ODOSTOMIA FITELLA, new species. Not known living, Subgenus AMAURA Moller, 1842. ODOSTOMIA MENZOLA, new species; sixteen specimens. Not known living, ODOSTOMIA TROCHILA, new species; two specimens. Not known living, ODOSTOMIA SANESIA, new species; two specimens. Not known living, ODOSTOMIA TIMESSA, new species; three specimens. Not known living, Family CYMATIIDAE. Genus ARGOBUCCINUM Maorch, 1852, Subgenus FusITRITON Cossmann, 1903. ARGOBUCCINUM OREGONENSIS Redfield, 1843; three specimens. Living, Bering Sea-San Diego, California. Aliso Japan. Family CERITHIOPSIDAE. Genus CERITHIOPSIS Forbes and Hanley, 1849. CERITHIOPSIS FOSSILIS Bartsch, 1911; one specimen. Not known living. CERITHIOPSIS FATUA Bartsch, 1911; three specimens. Living, Santa Barbara and Coronado Islands. Section CERITHIOPSIDA Bartsch, 1911. CERITHIOPSIS DIEGENSIS Bartsch, 1911; two specimens. Living, San Clemente and Coranado Islands, and San Diego. Section CERITHIOPSINA Bartsch, 1911. CERITHIOPSIS NECROPOLITANA Bartsch, 1911; three specimens. Not known living. Genus SEILA A. Adams, 1861. SEILA MONTEREYENSIS Bartsch, 1907; seven specimens. Genus METAXIA Monterosato, 1884. METAXIA DIADEMA Bartsch, 1907; four specimens. Living, Monterey-San Diego, California. 16 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, 65 Family CERITHIIDAE. Genus ALABINA Dall, 1902. ALABINA CALIFORNICA Dali and Bartsch, 1901; seven specimens. Not known living. Genus BITTIUM Gray, 1847. Subgenus SEMIBITTIUM Cossmann, 1896. BITTIUM ATTENUATUM Carpenter, 1864; numerous. Living, Forrester Island, Alaska—San Diego, California. BITTIUM RUGATUM Carpenter, 1866; plentiful. Living, San Pedro and Catalina Islands, California. Subgenus LIROBITTIUM Bartsch, 1911. BITTIUM CATALINENSE Bartsch, 1907; two specimens. Living at Catalina Island and San Diego. BITTIUM ORNATISSIMUM Bartsch, 1911; very plentiful. Living at San Pedro. BITTIUM ASPERUM Gabb, 1861; one specimen. Living, Santa Barbara to San Diego, California. Family CAECIDAE. : Genus CAECUM Fleming, 1817. CAECUM CALIFORNICUM Dall, 1885; one specimen. Living, Monterey, California-—Lower California. Genus MICRANELLUM Bartsch, 1920. MICRANELLUM CREBRICINCTUM Carpenter, 1864; plentiful. Living, Monterey, California-Todos Santos Bay, Lower California. Genus FARTULUM Carpenter, 1858. FARTULUM HEMPHILLI Bartsch, 1920; not rare. Living, San Pedro, California—Point Abreojos, Lower California. Family VERMETIDAE. Genus ALETES Carpenter, 1857. ALETES SQUAMIGERUS Carpenter, 1856; very plentiful. Living, Monterey, California—Payta, Peru, and the Galapagos Islands. ALETES SQUAMIGERUS PENNATUS Morch, 1862; plentiful. Living, San Pedro, California, and north. Family TURRITELLIDAE. Genus TURRITELLA Lamarck, 1799. TURRITELLA COOPERI Carpenter, 1866; twenty specimens. Living, Monterey—San° Diego, California. art. 22 SAN PEDRO FAUNA—OLDROYD. 1% Family LITTORINIDAE. Genus LITTORINA Ferussac, 1822. Section LITTORIVAGA Dall, 1918. LITTORINA PLANAXIS Philippi, 1847; twenty specimens. Living, Puget Sound—Magdalena Bay, and Socorro Islands. Subgenus MELARHAPHE (Miihlfeldt) Menke, 1828. LITTORINA SCUTULATA Gould, 1849; not rare. Living, Kodiak Island, Alaska—Turtle Bay, Lower California. Family LACUNIDAE. Genus LACUNA Turton, 1827. LACUNA SOLIDULA Loven, 1846; two specimens. Living, Puget Sound-San Diego, California. Also Atlantic. LACUNA UNIFASCIATA AURANTIACA Carpenter, 1856; not rare. Living, Santa Barbara, California—Point Abreojos, Lower California. Family FOSSARIDAE. Genus ISELICA Dall, 1918. ISELICA FENESTRATA Carpenter, 1864; very plentiful. Living, Puget Sound-Gulf of California. Family ? Genus DIALA A. Adams, 1861. DIALA ACUTA Carpenter, 1864; not rare. Living, Puget Sound-San Diego, California. Family RISSOIDAE. Genus ALVANIA (Leach) Risso, 1826. ALVANIA MONTEREYENSIS Bartsch, 1911; about fifty specimens. Living, Sitka, Alaska—Monterey, California. ALVANIA AEQUISCULPTA Keep, 1887; one specimen. Living, Catalina Island-Todos Santos Bay, Lower California. Genus PALUDESTRINA Orbigny. PALUDESTRINA CURTA Arnold, 1903; not rare. Not reported living. PALUDESTRINA cf. STOKESI Arnold, 1903; eight specimens. Not reported living. Specimens too worn for identification. Family RISSOINIDAE. Genus RISSOINA Orbigny, 1840. RISSOINA KELSEYI Dall and Bartsch, 1902; two specimens. Living, San Pedro, California—Coronado Islands. 18 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 RISSOINA DALLI Bartsch, 1915; two specimens. Living, San Pedro, California-South Coronado Island. Family TRUNCATELLIDAKE. Genus TRUNCATELLA (Leach, 1818) Risso, 1826. TRUNCATELLA CALIFORNICA Pfeiffer, 1857; five specimens. Living, Santa Barbara—San Diego and San Martin Island, Lower California. Family SYNCERATIDAKE. Genus SYNCERA Gray, 1821. SYNCERA TRANSLUCENS Carpenter, 1864; eight specimens. Living, Vancouver Island—Lower California. Family HIPPONICIDAE. Genus HIPPONIX Defrance, 1819. HIPPONIX ANTIQUATUS Linnaeus, 1767; five specimens. Living, Crescent City, California-Panama and the Galapagos Islands. AHIPPONIX ANTIQUATUS CRANIOIDES Carpenter, 1864; one specimen. Living, Vancouver Island—San Pedro, California. HIPPONIX TUMENS Carpenter, 1865; three specimens. Living, Crescent City, California-San Diego, California. Family CREPIDULIDAE. Genus CREPIDULA Lamarck, 1801. Section CREPIDULA s. s. CREPIDULA ONYX Cowerby, 1825; four very small specimens. Living, Monterey, California—Panama, CREPIDULA EXCAVATA Broderip, 1834; six specimens. Living, Monterey, California—Payta, Peru. CREPIDULA ADUNCA Sowerby, 1825; quite plentiful. Living, Vancouver Island-Cape San Lucas, Lower California. CREPIDULA ACULEATA Gmelin, 1792; eight specimens. Living, Santa Barbara, California—Valparaiso, Chile. CREPIDULA DORSATA Broderip, 1834; six specimens. Living, Puget Sound—Peru and South America. Subgenus IANACUS Morch, 1852. CREPIDULA NUMMARIA Gould, 1846; plentiful. Living, Bering Sea—Mazatlan, Mexico. Family CALYPTRAEIDAE. Genus CALYPTRAEA Lamarck, 1799. CALYPTRAEA FASTIGIATA Gould, 1846; nine specimens. Living, Port Etches, Alaska—Puget Sound. aRT. 22 SAN PEDRO FAUNA—OLDROYD. 19 Family NATICIDAE. Genus POLINICES Montfort, 1810. Subgenus Euspira Agassiz, 1842. POLINICES cf. LEWISII Gould, 1847; not rare, all specimens small and decorticated. Living, the type form at Vancouver Island—Santa Barbara Islands, Cali- fornia. Subgenus NEVERITA Risso, 1826. POLINICES RECLUZIANA ALTA Dall, 1909; not rare. Living, Monterey—Catalina Island. Genus SINUM Bolten, 1798. SINUM CALIFORNICUM I. S. Oldroyd, 1917; two specimens. Living, Monterey, California—Lower California. Family ACMAEIDAE. Genus ACMAEA Eschscholtz, 1830. Section COLLISELLA Dall, 1871. ACMAEA SCUTUM PATINA Eschscholtz, 1832; not rare, all very small. Living, Bering Sea—Gulf of California. ACMAEA LIMATULA Carpenter, 1866; not rare, all quite small. Living, British Columbia—Lower California. ACMAEA SCABRA Gould, 1846; twelve specimens. Living, San Francisco—Lower California. ACMAEA INCESSA Hinds, 1842; quite plentiful. Living, Trinidad, California-Magdalena Bay, Lower California. ACMAEA ASMI Middendorff, 1849; not rare. Living, Sitka, Alaska—San Diego, California, and Socorro Island, ACMAEA DEPICTA Hinds, 1847; not rare. Living, Santa Barbara—Lower California. ACMAEA PALEACEA Gould, 1851; ten specimens. Living, Trinidad, California-Lower California. Genus LOTTIA Gray, 1834. LOTTIA GIGANTEA Gray, 1834; five specimens, all very small. Living, Washington—Guadelupe and Cerros Islands. Family PHASIANELLIDAE. Genus PHASIANELLA Lamarck, 1804. Subgenus TRICOLIA Risso, 1826. PHASIANELLA COMPTA Gould, 1856; very plentiful. Living, Monterey-Gulf of California. PHASIANELLA PULLOIDES ELATIOR Carpenter, 1865; ten specimens. Living, Catalina Island—Panama. 20 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 Family TURBINIDAE. Genus ASTRAEA Bolten, 1798. Subgenus PACHYPOMA Gray, 1850. ASTRAEA INAEQUALIS PACIFICA Dall, 1919; one specimen and sixteen opercula Living, Off Santa Cruz Island, California, in 30 fathoms. Genus LEPTOTHYRA (Carpenter) Pease, 1869. LEPTOTHYRA CARPENTERI Pilsbry, 1888; twelve specimens. Living, Sitka, Alaska-San Diego, California. LEPTOTHYRA BACULA Carpenter, 1864; one specimen. Living, Puget Sound-San Martin Islands, Lower California. LEPTOTHYRA PAUCICOSTATA Dall, 1871; thirteen specimens. Living Monterey—Coronado Islands. Family TROCHIDAE. Genus HALISTYLUS Dall, 1889. HALISTYLUS SUBPUPOIDEUS Tryon, 1838; one specimen. Living, Queen Charlotte Islands, British Columbia—Panama. Genus TEGULA Lesson, 1832. Section CHLOROSTOMA Swainson, 1840. TEGULA FUNEBRALIS A. Adams, 1854; fifteen specimens. Living, Vancouver Island—Cerros Islands, Lower California. TEGULA MONTEREYI Kiener, 1850; seven specimens. Living, Vancouver Island—Channel Islands, Lower California. TEGULA LIGULATUS Menke, 1850; one specimen. Living, Monterey, California—Acapuleo, Mexico. Genus CALLIOSTOMA Swainson, 1840. CALIOSTOMA CANALICULATUM Martyn, 1784; ten specimens. Living, Sitka, Alaska—San Diego, California. CALLIOSTOMA CANALICULATUM Martyn, 1784; ten specimens. Living, Sitka, Alaska-—San Diego, California. Genus MARGARITES Leach, 1847. Subgenus LIRULARIA Dall, 1909. MARGARITES PARCIPICTA PEDROANA Arnold, 1903; plentiful. Not reported living. MARGARITES MAGNA, new species; most plentiful. Not known living. MARGARITES LIRULATA Carpenter, 1864; two specimens. Living, Alaska—San Diego, California. 3 MARGARITES OPTABILIS Carpenter, 1864; one specimen. ¥ Living, Santa Barbara-San Pedro, California. ABT. 22 SAN PEDRO FAUNA—OLDROYD. Family VITRINELLIDAE. Genus VITRINELLA C. B. Adams, 1850. VITRINELLA OLDROYDI Bartsch, 1907; one specimen. Living, on mantle of Chitons, Monterey, California—Lower California. VITRINELLA ESHNAURI Bartsch, 1907; two specimens. Living, San Pedro, California. VITRINELLA THOMASI Bartsch, 1913; two specimens. Not reported living. Section DOCOMPHALA Bartsch, 1907. VITRINELLA STEARNSII Bartsch, 1907; five specimens. Living, Monterey, California. Genus TEINOSTOMA A. Adams, 1854. TEINOSTOMA INVALLATUM Carpenter, 1864; twenty specimens. Living, Monterey, California—Gulf of California. Family FISSURELLIDAE. Genus FISSURELLA Bruguiére, 1791. FISSURELLA VOLCANO Reeve, 1849; two specimens. Living, Crescent City, California—Panama. Genus MEGATEBENNUS Pilsbry, 1850. MEGATEBENNUS BIMACULATUS Dall, 1871; nine specimens. Living, Forrester Island Alaska Cape San Lucas, Lower California. Genus DIADORA Gray, 1821. DIADORA ASPERA Eschscholtz, 1833; ten specimens. Living, Cook’s Inlet Alaska—Magdalena Bay, Lower California. DIADORA MURINA (Carpenter’s MS.) Dall, 1885; two specimens. Living, Crescent City, California-Magdalena Bay, Lower California. Genus PUNCTURELLA Lowe, 1827. PUNCTURELLA CUCULLATA Gould, 1846; two specimens. Living, Kodiak Island, Alaska—La Paz, Lower California. Family LEPIDOCHITONIDAE. Genus LEPIDOCHITONA Gray, 1821. Section LEPIDOCHITONA s. s. LEPIDOCHITONA DENTIENS Gould, 1884; about thirty valves. Living, Puget Sound—Lower California. Genus NUTTALLINA Carpenter, 1873. NUTTALLINA CALIFORNICA Reeve, 1847. Living Straits of Fuca-San Diego, California. 21 99 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 Family ISCHNOCHITONIDAE. Genus ISCHNOCHITON Gray, 1847. Subgenus STENOPLAX Carpenter, 1878. ISCHNOCHITON FALLAX Carpenter, 1892; one valve. Living, Vancouver Island—Todos Santos Bay, Lower California, Section LEPIDOZONA Pilsbry, 1892. ISCHNOCHITON COOPERI Carpenter, 1892; three valves. Living, Mendocino County, California—Catalina Island. Genus CALLISTOCHITON Carpenter, 1882. CALLISTOCHITON PALMULATUS MIRABILIS Pilsbry, 1892; two valves. Living, San Diego, California. CALLISTOCHITON CRASSICOSTATUS Pilsbry, 1892; eleven valves. Living, Forrester Island, Alaska—San Diego, California. Family MOPALIIDAE. Genus MOPALIA Gray, 1847. MOPALIA MUSCOSA Gould, 1846; six valves. Living, Shumagin Islands, Alaska—Rosario, Lower California. MOPALIA MUSCOSA ACUTA Carpenter, 1855; twenty valves. Living, Santa Barbara—San Diego, California. Family CRYPTOCHITONIDAE. Genus CRYPTOCHITON Middendorff, 1847. CRYPTOCHITON STELLERI Middendorff, 1847; not rare. Living, Bering Island, Aleutian Islands—San Miguel and San Nicolas Islands. LAND AND FRESHWATER SPECIES. Family ZONITIDAE. Genus ZONITOIDES Lehmann, 1846. ZONITOIDES ARBOREUS Say, 1817; two specimens. Living Vancouver Island—Oregon. Family HELICIDAE. Genus PYRAMIDULA Fleming, 1833. PYRAMIDULA CRONKHITEI Newcomb, 1865; one specimen. Living, Alaska—Oregon. ART. 22 SAN PEDRO FAUNA—OLDROYD. 98 Family LYMNAEIDAE. Genus PLANORBIS Muller, 1774. PLANORBIS TRIVOLVIS Say, 1817. Living all along the coast. PLANORBIS DEFLECTUS Say, 1824; one specimen. With the last, living. CRAB REMAINS IDENTIFIED BY MISS MARY J. RATHBUN. Lophopanopeus leucomanus Lockington. Twelve major and two minor dactyls, twenty-three immovable fingers. Lophopanopeus diegensis Rathbun. Sixty-three minor dactyls and seventy immovable fingers. Lophopanopeus lockingtoni Rathbun. Nine movable fingers. Hemigrapsus oregonensis Dana. One hundred and twenty movable and fourteen immovable fingers. Hemigrapsus nudus Dana. Nineteen movable and eleven immovable fingers. Cancer productus Randall. Seventeen movable and sixty-six immovable fingers. Cancer gracilis Dana. Two movable fingers. Randallia ornata (Randall) and Randallia, new species. Fifteen arm joints. Callianassa, new species. Hight dactyls of ambulatory legs. Mesorhoea, new species. Two hands, one arm. SPINES AND FRAGMENTS OF SEA URCHINS, EITHER OR BOTH OF THE FOLLOWING TWO SPECIES. Strongylocentrotus franciscanus A. Agassiz. Strongylocentrotus purpuratus Stimpson. Dendraster excentricus Eschscholtz. Plentiful. OTHER INVERTEBRATA. Foraminifera, three species. Bryozoa, four species, two of which are very plentiful, and also plentiful, living in Puget Sound. DESCRIPTIONS OF NEW FORMS. ACTEOCINA PEDROENSIS, new species. Plate 2, fig. 9. Shell large, slightly pyriform, with a small prominent subcylin- drical nucleus of about two whorls and five subsequent whorls; suture narrowly channeled; the external surface is decorticated in all the specimens, but appears to have been smooth, the surface remaining shows faint spiral feebly punctate striae with rather wide inter- 94 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 spaces, all of which sculpture may have been concealed in the perfect shell; aperture slightly shorter than the last whorl; outer lip sharp, very slightly protractively arcuate, receding anteriorly and deeply rounded into the pillar lip, which is thickened and pro- vided with a prominent sharp plait; body with a smooth coat of enamel; length of shell, 20; of last whorl, 18.5; of aperture, 16; maximum diameter, 10 mm. Type.—Cat. No. 352346, U.S.N.M. This is larger than any other species of the coast and is less cylindrical than A. culcitella Gould, the most nearly allied species. A specimen which has lost the nucleus is 23 mm. long and 10.5 mm. in diameter. MARGINELLA JEWETTII NANELLA, new subspecies. Plate 2, fig. 8. Shell much like typical jewetééi but uniformly smaller, more slender proportionately, somewhat less wide at the shoulder, and while jewetti usually has five plaits, including that on the edge of the pillar, this variety when adult often has as many as eight. Relative dimensions are: M. jewettii; length, 5.5; maximum diameter, 4.5 mm. M. nanella; length, 5.0; maximum diameter, 3.7.mm. Type.—Cat. No. 352361, U.S.N.M. Many M. jewettii are larger than the average specimen above cited, but the size of specimens of the fossil variety is suprisingly uniform. Many specimens of the latter have been examined. ALIA TUBEROSA MAJOR, new subspecies. Plate 2, fig. 11. Shell lke the typical recent form, with the same number of whorls but uniformly much larger. Comparative measurements for specimens of eight whorls are: A. tuberosa; length, 8; maximum diameter, 3.8 mm. Var. major; length, 11; maximum diameter, 5.0 mm. Type.—Cat. No. 352369, U.S.N.M. TURBONILLA (STRIOTURBONILLA) PECORA, new species. Plate 1, fig. 6. Shell of medium size, elongate turrited, yellowish white. Nuclear whorls two and a half, forming a somewhat depressed helicoid spire, the axis of which is at right angles to that of the succeeding turns, in the first of which the tilted edge of the last whorl is one-fifth im- mersed. Postnuclear whorls almost flattened, almost tabulately shouldered at the summit, marked by strong, decidedly protractively ART. 22 SAN PEDRO FAUNA—OLDROYD. 25 slanting axial ribs, of which 14 occur upon the first, second, and third, 16 upon the fourth, fifth, and sixth, 18 upon the seventh to eleventh, and 22 upon the penultimate turn. These ribs extend quite prominently to the summit of the whorls, which they render slightly crenulated. The intercostal spaces are about as wide as the ribs, terminating a little posterior to the suture, which leaves a narrow, smooth band immediately above the well-constricted suture. Pe- riphery of the last whorl well rounded. Base short, well rounded, marked by the feeble continuations of the axial ribs, which evanesce shortly after passing the periphery. The entire surface of the shell is marked by fine, closely spaced spiral striations. Aperture broadly oval; posterior angle obtuse; outer lip thin; inner lip slightly curved, reflected over and appressed to the base for its anterior third, and provided with an obsolete fold a little anterior to its insertion. Type.—Cat. No. 333506, U.S.N.M., has 12.5 whorls and measures: length, 8.2 mm.; diameter, 2 mm. Cat. No. 352503 U.S.N.M. con- tains another specimen showing the nucleus. Three additional specimens are in the Oldroyd collection. The present species belongs to the group of Turbonilla (Striotur- bonilla) dinora, panamensis, schmitti, and button. It is less robust than 7’. (S.) dinora and has more ribs than that species, and is more robust than any of the other members of the group. The fine spiral striations have been omitted in the figure. TURBONILLA (PYRGOLAMPROS) COLLISELLA, new species. Plate 1, fig. 11. Shell moderately large, elongate conic, yellowish, with a brownish suffusion which probably indicates that when living it was brown. Nuclear whorls two and a fifth, forming a somewhat depressed heli- coid spiral, the axis of which is almost at right angles to that of the succeeding turns, in the first of which the tilted edge of the nuclear spiral is about one-fifth immersed. Early postnuclear whorls moder- ately rounded, the later ones almost flattened, slightly shouldered at the summit, marked by almost vertical axial ribs. Of these ribs, which are much less strong and more numerous and more closely spaced on the early whorls than on the later, where they become senescent on the last turn, 24 occur on the second, 30 upon the third, 26 upon the fourth, 24 upon the fifth and sixth, 21 upon the seventh, eighth, and ninth, 28 upon the tenth, while on the last whorl they are decidedly irregular and irregularly spaced. The intercostal spaces vary in width, being very narrow on the early turns, moder- ately wide on the median and again on the later very narrow. Suture moderately constricted. Periphery of the last whorl well roundea, Base short, marked by the feeble continuations of the axial ribs, 26 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 which extend to the umbilical chink. Aperture rather large, broadly oval; posterior angle obtuse; outer lip thin; inner lip slightly curved and reflected, with the posterior third reflected over and appressed to the base. There is an oblique feeble fold on the columella a little anterior to its insertion. Type.—Cat. No. 333507, U.S.N.M., has lost the nucleus and first two postnuclear turns. The 9.5 whorls remaining measure: Length, 12 mm.; diameter, 3.3 mm. The nucleus and the first two postnuclear turns were described from a young specimen, Cat. No. 352507, U.S.N.M., having nine post- nuclear whorls, which measures: Length, 7.1 mm.; diameter, 2.2 mm. Twenty-seven additional specimens are in the Oldroyd collection. This species belongs near 7'urbonilla (Pyrgolampros) hannibali, Bartsch. TURBONILLA (PYRGOLAMPROS) IDAE, new species. Plate 1, fig. 9. Shell of medium size, elongate conic, pale brown. Nuclear whorls two and a half, forming a very small, slightly elevated heli- coid spiral, the axis of which is at right angles to that of the suc- ceeding turns, in the first of which the tilted edge of the nuclear spiral is about one-fourth immersed. The first two or three post- nuclear whorls well rounded, the succeeding turns almost flattened, or sometimes evenly slightly concave. All the whorls very nar- rowly shouldered at the summit. The first postnuclear whorl smooth, the second one showing mere indications of axial riblets, while on the succeeding turns they become increasingly stronger, well rounded, and somewhat protractively slanting. Of these riblets, 20 occur upon the third, 18 upon the fourth to sixth, 20 upon the seventh, 22 upon the eighth, 24 upon the ninth, and 34 upon the last turn. On this they become less conspicuous. Intercostal spaces mere lines on the first turns, while on the median whorls they are about half as wide as the axial ribs, and on the last turn they are again materially reduced. Suture slightly constricted. Periphery of the last whorl somewhat inflated, well rounded. Base short, somewhat inflated, well rounded, marked by the feeble continuations of the axial riblets, which extend to the umbilical chink. The entire surface of the spire and base crossed by numerous, closely spaced spiral striations. Aperture broadly oval; posterior angle acute; outer lip thin; inner lip curved, rather strongly reflected, almost free throughout its entire length, posteriorly covering the greater portion of the umbilical chink. A feeble twist is present on the columella at its insertion. ART. 22 SAN PEDRO FAUNA—OLDROYD. 27 Type.—Cat No. 333509, U.S.N.M., has lost the nucleus and the first nuclear turn. The nine remaining measure: Length, 7.9 mm.; diameter, 2.8 mm. The nuclear turns were described from a young specimen, Cat. No. 352508, U.S.N.M.; 38 additional specimens are entered as Cat. No. 352533, U.S.N.M.; 150 are in the Oldroyd collection. This specimen is related to Turbonilla (Pyrgolampros) taylori, Dall and Bartsch, but is much smaller than that species, and has more ribs. The fine spiral striations have been omitted in the figure. TURBONILLA (PYRGISCUS) HIMERTA, new species. Plate 1, fig. 1. Shell moderately large, pale yellow. Nuclear whorls two and a half, well rounded, forming a decidedly repressed helicoid spiral, the axis of which is almost at right angles to that of the succeeding turns, in the first of which the tilted edge of the nuclear spiral is about one-fourth immersed. Postnuclear whorls narrowly shoul- dered at the summit, almost flattened in the middle, marked by 20 weak, slightly retractively curved, axial ribs on the first turn. On the second turn and the succeeding turns there are strong axial ribs, which have a protractive slant. Of these ribs, 18 occur upon the second to fifth, 20 upon the sixth, 24 upon the seventh, where they begin to have a slight retractive curve, while on the last turn there are 38, which have a decided retractive curve. The spaces separating these ribs are narrow on the first turn, about as wide as the ribs on the succeeding two, and a little wider than the ribs on the next two, while on the last they are a little narrower than the ribs. The spiral sculpture consists of a series of incised lines and pits. The widest pits are the line at the periphery, where the diameter equals the height. Another series of pits is about half the width of the peripheral, and occupies a space halfway between the summit and the periphery, while a third series of about equal width occupies the space a little nearer to the peripheral than the median line of pits. The two series of pits posterior to the median pits follow next in strength and are equal. In addition to this, there are incised spiral lines, of which the first is about half as far removed from the summit as it is from its neighbor anteriorly, the space between the first and second being equal to about one-sixth of the width between the summit and the periphery. The second, third, and fourth incised lines are equal and rather closely spaced. These are followed by the two medium-sized pits already referred to, posterior to the median pits, then by the median pits. The space between the median pit and the medium-sized pit anterior to it is crossed by two incised spiral lines, of which the first is a little 28 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL, 65 farther removed from the median pit than from its neighbor, while the second is closely approximated .to the second pit. The space between the medium-sized pit and the peripheral pit is crossed by two lines, of which the first divides the space between the two, while the last is separated from the peripheral pit by a mere hair line. Periphery of the last whorl well rounded. Base marked by the feeble continuations of the axial ribs, which evanesce before reach- ing the umbilical chink, and 18 incised spiral lines of varying strength and spacing. Suture moderately constricted. Aperture broadly ovate; posterior angle acute; outer lip thin; inner lip con- cave, reflected over and appressed for half its length to the preceding turn, bearing a weak fold a little anterior to its insertion. Type.—Cat. No. 333508, U.S.N.M., has lost the nucleus. The 8.75 whorls remaining measure: 6.4 mm.; diameter, 2 mm. The nuclear whorls were described from specimen, Cat. No. 352509 U.S.N.M. Three additional specimens are in the Oldroyd collection. This species belongs to the group of Yurbonilla (Pyrgiscus) auricoma Dall and Bartsch and 7. (P.) castanea Keep. TURBONILLA (MORMULA) EPIPHANEA, new species. Plate ano aioe Shell very large. (Nuclear whorls decollated in all the specimens seen.) Postnuclear whorls almost appressed at the summit, well rounded, marked by rather strong, almost vertical axial ribs, of which 14 occur upon the first of the remaining turns, 16 upon the second, 18 upon the third and fourth, 20 upon the fifth to seventh, 22 upon the eighth to tenth, 24 upon the eleventh, while on the succeeding turns they become enfeebled and finally obsolete. In addition to the axial ribs, low rounded varices, the result of the fusion of several ribs, occur at regular intervals. Intercostal spaces about twice as wide as the ribs, crossed by 8 almost equal, incised spiral lines, which, however, do not enclose equal spaces. The space between the first and second, second and third and sixth and seventh is about twice as wide as the space between the summit and the first, and those between the third and fourth and fourth and fifth, while the space between the fifth and sixth and seventh and eighth stand halfway between these in width. In addition to this, there are very finely incised lines in the spaces between the coarse incised lines. On the last turn, where the axial sculpture becomes obsolete, the spiral sculpture is also very irregular and many more incised lines are apparent. Periphery of the last whorl well rounded. Base short, well rounded, marked by the feeble continuations of the irregular axial ribs, which form mere threads, and in that fashion extend to the umbilical chink, and numerous closely spaced spiral striations. ART. 22 SAN PEDRO FAUNA—OLDROYD. 29 Aperture subquadrate; posterior angle obtuse; outer lip’ thin, bearing three spiral lirae within; inner lip somewhat twisted, almost vertical, its edge reflected and appressed to the preceding whorl for one-third of its length. Type—Cat. No. 333510, U.S.N.M., has 14.5 whorls and measures: Length, 20.8 mm.; diameter, 4.9 mm. Five additional specimens, Cat. No. 352510, U.S.N.M., are also in the National Museum collection, and 20 are in the Oldroyd collection. This species is related to Zurbonilla (Mormula) tridentata Car- penter, but is much larger than that species. ODOSTOMIA (IVARA) AMAYA, new species. Plate 1, fig. 7. Shell elongate ovate, yellowish white. Nuclear whorls deeply 1m- mersed in the first of the postnuclear turns, above which the outer edge of the last whorl only projects. Postnuclear whorls very broadly flatly tabulated at the summit, with a sharp angle at the shoulder of the summit, the portion anterior to the shoulder moderately well rounded and crossed by feeble, almost vertical, axial ribs, of which 32 occur upon the third, while upon the last whorl they become decidedly irregular in strength and spacing. On the third whorl the spaces that separate the ribs are almost as wide as the ribs. In addition to the axial sculpture, the whorls are marked by spiral striations, which cause the spaces between them to appear as raised flattened cords. These are poorly defined on the first two turns in the type, while on the third there are eight between the summit and the suture and nine on the last whorl. Periphery of the last whorl well rounded. Base rather long, well rounded, marked by the feeble continuations of the axial ribs, and eight incised spiral] lines, the combinations of the two forming a sculpture correspond- ing with that on the spire. Aperture elongate ovate; posterior angle rendered decidedly obtuse by the tabulated summit; outer lip thin; inner lip strongly curved, with a conspicuous fold at its insertion; parietal wall covered by a thin callus. Type.—Cat. No. 352514, U.S.N.M., has 4.5 postnuclear whorls and measures: length, 3.8 mm.; diameter, 1.8 mm. Compared with Odostomia (Ivara) turricula Dall and Bartsch, the present species is differentiated by its much more robust form and coarser sculpture. ODOSTOMIA (CHRYSALLIDA) GOMPHINA, new species. Plate 1, fig. 3. Shell very elongate ovate, yellowish white. Nuclear whorls deeply, obliquely immersed in the first of the succeeding turns, above whick only the tilted edge of the last volution projects, which appears well 30 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 rounded and smooth. Postnuclear whorls well rounded, narrowly shouldered at the summit, marked by strong, decidedly retractively slanting axial ribs, of which 18 occur upon the first, 20 upon the second, 22 upon the third, and 26 upon the last turn. In addition to the axial ribs, the whorls are crossed by 4 equal and equally spaced spiral cords, which are about as wide as the spaces that separate them. The first of these is at the summit. The intersection of the axial ribs and spiral cords forms strong, rounded tubercles which have their long axes, which are only slightly greater than the shorter, parallel with the spiral sculpture. Periphery of the last whorl marked by a spiral cord, which falls partly in the suture on the last two turns. Suture not channeled. Base moderately long, well rounded, with a narrow umbilical chink, marked by 10 spiral cords, which become suc- cessively narrower and closer spaced from the periphery to the um- bilical chink. Aperture ovate; posterior angle acute; outer lip thin; inner lip strongly curved and decidedly reflected and appressed to the base, provided with a rather strong fold at the insertion of the colum- ella; parietal wall covered with a rather thick callus, which alone renders the peritreme complete. Type—Cat. No. 352515, U.S.N.M., has 5 postnuclear whorls and measures: Length, 3.2 mm.; diameter, 1.4 mm. The present species is related to the recent group of which Odostomia (Chrysallida) benthina and O. (C.) promeces are mem- bers. An additional specimen is in the Oldroyd collection. ODOSTOMIA (CHRYSALLIDA) SCELERA, new species. Plate 1, fig. 4. Shell elongate conic, yellowish white. Nuclear whorls small, deeply, obliquely immersed in the first of the postnuclear turns, above which the tilted edge of the last volution only projects. Post- nuclear whorls strongly shouldered at the summit, marked by very strong, retractively slanting axial ribs, of which 14 occur upon the second and third, 16 upon the fourth, and 20 upon the last turn. In addition to the axial ribs, the whorls are marked by 4 strong spiral cords, which are not quite equal to the axial ribs in strength, and which render the junction with the axial ribs strongly nodulose, the nodules being a little longer than wide. The spaces inclosed between the axial ribs and spiral cords are rectangular pits. Periphery of the last whorl marked by a strong cord, separated from the last cord on the spire by a channel as wide as that separating the other cords of the spire, and crossed by the continuations of the axial ribs which terminate at the posterior border of the peripheral cord. Suture strongly channeled. “Base feebly rounded, marked by four spiral ART. 22 SAN PEDRO FAUNA—OLDROYD. 31 cords, which are successively closer spaced and weaker from the posterior anteriorly, the fourth being really a broad, tumid area, surrounding the umbilical chink. The broad channels separating these cords are crossed by numerous slender axial threads. Aperture oval; posterior angle acute; outer lip thin at the edge, thick within; inner lip curved, reflected over and appressed to the preceding turn, provided with a strong, oblique fold at its insertion; parietal wall covered by a thick callus. Type.——Cat. No. 352516, U.S.N.M., has 5 whorls and measures: Length, 3.2 mm.; diameter, 1.5 mm. This is most nearly related to Odostomia (Chrysallida) hetero- cincta Bartsch, from which it is at once distinguished by its more robust size and less acutely tuberculated sculpture. Cat. No. 352517, U.S.N.M., contains 2 more specimens from the type locality, and 6 additional specimens are in the Oldroyd col- lection. ODOSTOMIA (EVALEA) TERSA, new species. Plate 1, fig. 10. Shell elongate conic, yellowish white. Nuclear whorls deeply, obliquely immersed in the first of the postnuclear whorls, above which only the tilted edge of the last volution projects. Postnu- clear whorls rather high between summit and suture, slightly rounded, narrowly shouldered at the summit and marked only by lines of growth and very fine spiral striations. Suture slightiy con- stricted. Periphery of the last whorl well rounded. Base slightly inflated, rather long, narrowly umbilicated, marked like the spire. Aperture long, oval; posterior angle acute; outer lip thin at the edge, thick within; inner lip oblique, slightly sinuous, provided with a strong fold opposite the umbilical chink; parietal wall covered by a moderately thick callus. Type.—Cat. No. 352518, U.S.N.M., has 5 postnuclear whorls re- maining, having lost probably the first half of the postnuclear turn, and measures: Length, 5 mm.; diameter, 2 mm. Cat. No. 352519, U.S.N.M., contains 2 specimens from the type locality, one of which served for description of the nucleus. Four additional specimens are in the Oldroyd collection. The present species recalls Odostomia (E'valea) valdezi Dall and Bartsch, but is more than double the size of that species in every way. The fine spiral striations have been omitted in the figure. ODOSTOMIA (EVALEA) ITHEA, new species. Plate 1, fig. 2. Shell regularly broadly conic, yellowish white. Nuclear whorls small, obliquely immersed in the first postnuclear turn, above which 32 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 85- only the tilted edge of the last turn projects. Postnuclear whorls slightly rounded, narrowly shouldered at the summit, marked by fine lines of growth and rather coarse spiral striations. Suture slightly constricted. Periphery of the last whorl rounded. Base short, well rounded, somewhat inflated, narrowly umbilicated, and marked like the spire. Aperture moderately long, oval; posterior angle acute; outer lip thin at the edge, thick within; inner lip strongly curved, with a strong fold opposite the umbilical chink; parietal wall covered by a thin callus. Type.—Cat. No. 352520, U.S.N.M., has 6.5 postnuclear whorls and measures: Length, 5.6 mm.; diameter, 2.4 mm. An additional specimen is in the Oldroyd collection. This species suggests Odostomia (Evalea) youngi Dall and Bartsch, but is distinguished from this at once by its more broadly conic outline. ODOSTOMIA (EVALEA) MANCA, new species. Plate 1, fig. 5. Shell very elongate ovate, yellowish white. Nuclear whorls small, deeply, obliquely immersed in the first of the postnuclear whorls, above which only the tilted edge of the last volution projects. Post- nuclear whorls slightly rounded, very narrowly shouldered at the summit, marked by fine lines of growth and moderately strong spiral striations. Suture slightly constricted. Periphery of the last whorl slightly inflated, well rounded. Base short, well rounded, not um- bilicated, marked like the spire. Aperture elongate oval; posterior angle acute; outer lip thin; inner lip slightly curved, reflected, and appressed for half its length to the base, provided with a strong fold at its insertion; parietal wall covered by a moderately thick callus. Type.—Cat. No. 352521, U.S.N.M., has 6 postnuclear whorls and measures: Length, 5.5 mm; diameter, 2.38 mm. Cat. No. 352522, U.S.N.M., contains 10 additional specimens from the type locality, and there are 49 in the Oldroyd collection. The present species recalls Odostomia (Evalea) resina Dall and Bartsch, which is fully four times as large. ODOSTOMIA (EVALEA) CIVITELLA, new species. Plate 2, fig. 7. Shell rather large, milk white. Nuclear whorls small, deeply im- mersed in the first of the succeeding turns, above which the tilted edge of the last volution alone projects. Postnuclear whorls moder- ately well rounded, narrowly shouldered at the summit, marked by numerous rather regular lines of growth and rather coarse spiral striations, which cause the space between these striations to appear ART. 22 SAN PEDRO FAUNA—OLDROYD. oe like slender lirations, and lend to the surface a reticulated appear- ance. Suture well constricted. Periphery slightly angulated at the early whorls, but rounded on the last. Base very narrowly um- bilicated, slightly inflated, well rounded, and marked like the spire. Aperture broadly oval; posterior angle acute; outer lip thin at the edge, thick within; inner lip strongly curved, reflected over but not appressed to the base, provided with a strong, oblique fold opposite the umbilical chink; parietal wall covered with a thin callus. Type.—Cat. No. 352523, U.S.N.M., has almost 6 postnuclear whorls and measures: Length, 6 mm.; diameter, 2.7 mm. Cat. No. 352524, U.S.N.M., contains 5 additional specimens from the type locality, and there are 10 in the Oldroyd collection. This species, while it belongs to the coarsely sculptured group of Evalea, does not seem to be very closely related to any of the de- scribed forms. ODOSTOMIA (EVALEA) FITELLA, new species. Plate 1, fig. 8. Shell very regularly elongate conic, yellowish white. Nuclear whorls rather large, deeply, obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volu- tion projects. Postnuclear whorls well rounded, very narrowly shouldered at the summit, marked by fine lines of growth and fine spiral striations. Suture slightly constricted. Periphery of the last whorl] slightly angulated. Base short, well rounded, somewhat inflated, broadly umbilicated, marked like the spire. Aperture elon- gate ovate; posterior angle acute; outer lip thin at the edge; inner lip almost straight, reflected but not appressed to the base; parietal wall covered by a thick callus, which renders the peritreme complete. Type.—Cat. No. 352525, U.S.N.M., has 6.5 postnuclear whorls and measures: Length, 5.9 mm.: diameter, 2.5 mm. Cat. No. 352526, U.S.N.M., contains 2 specimens from the type locality, and there are 4 additional in the Oldroyd collection. The present species has no near relatives among the recent shells so far described. GDOSTOMIA (AMAURA) MENZGLA, new species. Plate 2; fig: 6. Shell small, elongate ovate. Nuclear whorls obliquely immersed in the first of the postnuclear turns, above which only the tilted edge of the last volution projects. Postnuclear whorls slightly rounded. narrowly shouldered at the summit, marked by retractively slanting lines of growth and microscopic spiral striations. Suture well 34 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 marked, slightly constricted. Periphery of the last whorl and the short base well rounded and inflated, the latter narrowly umbili- cated and marked like the spire. Aperture very broadly ovate; posterior angle obtuse; outer lip thin at the edge; inner lip some- what sinuous, reflected over but not appressed to the base, provided with a strong oblique fold; parietal wall glazed with a thin callus. Type.—Cat. No. 352527, N.S.N.M., has 6 postnuclear whorls and measures: Length, 6.2 mm.; diameter, 3 mm. Cat. No. 352528, U.S.N.M., contains 5 specimens from the type locality and there are 10 additional specimens in the Oldroyd collection. This form is related to Odostomia (Amaura) helena Bartsch, but is about double the size of that species. The fine spiral striations have been omitted in the figure. ODOSTOMIA (AMAURA) TROCHILIA, new species. Plate 2, fig. 1. Shell broadly ovate, yellowish white. Nuclear whorls deeply, ob- liquely immersed in the first of the postnuclear turns, above which the tilted edge of the last volution alone projects. Postnuclear whorls well rounded, narrowly tabulately shouldered at the summit, marked only by lines of growth and microscopic spiral striations. Suture constricted. Periphery of the last whorl and the short, narrowly umbilicated base well rounded, marked like the spire. Aperture large, ovate; posterior angle acute; outer lip thin at the edge, thick within; inner lip somewhat sinuous, reflected over but not appressed to the base, provided with a strong oblique fold a little anterior to the insertion of the columella; parietal wall glazed by a thin callus. Type—Cat. No. 352529, U.S.N.M., has 5.5 postnuclear whorls and measures: Length, 6.6 mm.; diameter, 3.2 mm. The present form is nearest related to Odostomia (Amaura) eng- bergi Bartsch, from which it differs by its less rounded whorls and little more acutely tabulated shoulder. An additional specimen, Cat. No. 352530, U.S.N.M., is likewise in the collection. The fine spiral striations have been omitted in the figure. ODOSTOMIA (AMAURA) SANESIA, new species. Plate 1, fig. 183. Shell moderately large, elongate conic, yellowish white. Nuclear whorls deeply, obliquely immersed in the first of the succeeding turns. Postnuclear whorls well rounded, narrowly shouldered at the sum- mit, marked by coarse lines of growth and microscopic spiral stria- tions. Suture moderately constricted. Base short, inflated, with an ART. 22 SAN PEDRO FAUNA—OLDROYD. oo umbilical chink, but not openly umbilicated, marked like the spire. Aperture short, broadly oval; posterior angle acute; outer lip thin at the edge; inner lip strongly curved, slightly sinuous, provided with a very strong oblique fold a little anterior to the insertion of the columella; parietal wall covered by a thin callus. Type.—Cat. No. 352531, U.S.N.M., has 6.3 postnuclear whorls and measures: Length, 8.7 mm.; diameter, 4 mm. An additional specimen is in the Oldroyd collection. The present form is related to Odostomia (Amaura) sanjuanensis Dall and Bartsch, but differs from it by its larger size and a little less sloping shoulder, as well as minor sculptural characters. The fine spiral striations have been omitted in the figure. ODOSTOMIA (AMAURA) TIMESSA, new species. Plate 2, fig. 4. Shell large, elongate conic, broadly umbilicated, yellowish white. Nuclear whorls deeply, very obliquely immersed in the first post- nuclear turn, above which only the tilted edge of the last volution projects. Postnuclear whorls well rounded, narrowly shouldered at the summit. marked by numerous lines of growth and very fine spiral striations. Suture somewhat constricted. Periphery of the last whorl inflated, well rounded. Base strongly inflated, well rounded, marked like the spire. Aperture large; posterior angle acute; outer lip thick within; inner lip curved and provided with a strong oblique fold a little anterior to its insertion; parietal wall covered by a thin callus. Type.—Cat. No. 352532, U.S.N.M., has almost 7 postnuclear whorls and measures: Length, 7.4 mm.; diameter, 3.2 mm. Two additional specimens are in the Oldroyd collection. This species is related to Odostomia (Amaura) washingtona Bartsch, but is in every way smaller than that species. The fine spiral striations have been omitted in the figure. EPITONIUM CONTINUATUM, new species. Plate 2, fig. 10. Shell small, acute, with a smooth nucleus of two, and six and a half subsequent well rounded whorls; suture deep but not solute; with twelve vertical sharp varices continuous over the suture and making nearly a complete circuit around the spire; there is no angle on the varices at the shoulder and no spiral sculpture or basal disk; the aperture is subovate and the base imperforate; length of shell. 8; of last whorl], 3.6; maximum diameter, 3.5 mm. Type.—Cat. No. 352383, U.S.N.M. One specimen was obtained. 45554—25— Proc.N.M.vol.65——43 36 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 65 LIRULARIA MAGNA, new species. Plate 2, figs. 2, 3, and 5. Shell large for the group, trochiform, originally mottled on the prominences with dark and light articulation, with a small smooth nucleus and about five whorls; suture distinct, very narrow; whorls very slightly convex; periphery rounded; spiral sculpture of (on the last whorl behind the periphery four or five, and on the base as many more) rather prominent threads with much wider interspaces: there is also more or less fine spiral striation; axial sculpture of fine regular silky retractively oblique incremental lines; the spiral threads, especially on the earlier whorls, are sometimes obscurely beaded; the base is moderately convex with a small funicular um- bilicus, axially striate; aperture rounded, oblique, the margins sim- ple, with no internal lirae; height of shell, 10; of last whorl, 6; maximum diameter, 8 mm. Type.—Cat. No. 352410, U.S.N.M. There is some variation in the height of the specimens, some being slightly more elevated than others in proportion to their diameter. The species is the largest of the group yet known. MA TTAS 4 a of ~ AIS AS Es: ‘Wino t2.6RO- monohy f Yi HEKOtRObG. DHROODO oS ah SUNOS Muay s A. ee ie. {DeEt) siseeieenee / sQ) obmaiabh 2. : < oliinotet 6 ; PERO {OF 7 SUNG ET PF SRS LT qieslon't PONE) Oy a eA Oks LET | EXPLANATION OF PLATES. All figures are photographs of the types. PLATE 1. Fie. 1. Turbonilla (Pyrgiscus) himerta Odostomia (Evatea) sthea 22a eee Eee . Odostomia (Chrysallida) gomphina Odostomia (Chrysallida) scelera Odostomia. (Huatlea) mance 2-2 eee ee Turbonilla (Strioturbonilla) pecora . Odostomia (Ivara) amava Odostomia. (Hvalea) fitella. | eS eee . Turbonilla (Pyrgolampros) idae 10; Odostomia. (Evatea) terse. eee 11. Turbonilla (Pyrgolampros) collisella 12. Turbonilla (Mormula) epiphanea 13. Odostomia (Amaura) sanesia 38 OMADIPwWNE U. S. NATIONAL MUSEUM I EDIINGS, VOL. 65, ART. 22 PL. a is PRO LOWER SAN PEDRO FYRAMIDELLIDS RIPTION OF PLATE SEE PAGE 38 FoR DES U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 65, ART. 22 PL. 2 Ore SS NY LOWER SAN PEDRO FOSSIL SHELLS FOR DESCRIPTION OF PLATE SEE PAGE 39 Fig. Prater 2. POCOSTONIG ICAMQUL@) LOCI a ae ee MTU TLIC IU te ne ee ee ee ae PTS VAULT T LING ON Lee RS Se 7 SA ER SS Odostomia: (Amaura)utimessamss =e ee ee ae BTL IAL LIAL A TIVO TUS = Ee Sp te se ee Re ee eS mOadostomia. (Amaurg) smenzcola se te Ne ee Se ee ea mOdostomiadn(Hoalea) Civitella— 2 a ee ee ee Be ee ee ernarqinelian 7ewertit: NANeulg ao oe ee ee es NPAT COCIN GE? NEAT OCTUSUS a ares rt ae an hee he Ne MBEIMULONIUM ;CONTIVLA TINY = — = Se ee es a ee es eee SCAT @utiLOCrOS G00) Of =e =o Sa es Se es ee ee wx 39 LL aNOR a prialirihl Rh Fe DTS Lis MiIOFBOHO Se Sohn ICSE OPT THA rit Lawnwih >) oiseeabO Vir ¥ { aeelne a) avbegtey$? obG sitoinde Httosrst aliiig sll Lo ane ee ERMA TG A HODIGL RTO ios Seo Stout oncetit, aie A NEW MARINE ANNELID FROM CHILE. By A. L. TreapweEL, Of the Department of Zoology, Vassar College, Poughkeepsie, New York. Among other material collected by Dr. F. Felippone, at Punta Arenas, Chile, during the past year was found a single, incomplete annelid, which was submitted to me for examination by the United States National Museum. I have been unable to find this described in any literature at my disposal and am recording it here as a new species, though because of the imperfect condition of the specimen the specific description must be incomplete. It has been included under Lagisca, because of the form of the prostomium, the fact that the neuropodial setae are smaller than the notopodial and have transverse denticulations, and on the assumption that only a small portion of the posterior end is missing. LAGISCA CRASSA, new species. The prostomium (fig. 1) is much broader than long, and is divided anteriorly by a deep V-shaped incision which extends half way of the length of the prostomium. From its posterior angle a slight dorsal depression continues posteriorly for the remainder of the prosto- mium. The result of this structure is that the prostomium is divided into halves, each roughly ovate in outline with its outer margin decidedly rounded toward its posterior end. From the point of greatest width the lateral margins slope gradually toward the anterior end where they meet with the inner margins which form the edges of the V. These two margins meet at a blunt angle but do not form a decided “ peak.” The eyes are all of approxi- mately the same size, the posterior pair situated near the dorsal mid-line of the corresponding half of the prostomium a little posterior to its center. ‘The anterior eyes are a very little farther apart than the posterior, and situated near the anterior margins. The median tentacle has a stout cirrophore which completely fills the above-mentioned V in the prostomium, and is about as long as the prostomium. The terminal joint is about as long as the cirro- No. 2536—PRocEeDINGS U. S. NATIONAL MUSEUM, VoL. 65, ART. 23. 1 2 PROCEEDINGS OF THE NATIONAL MUSEUM, VoL. 65. phore, is rather thick, and terminates in a fine filament arising from the abruptly narrowing end of the tentacle. The lateral tentacles are much shorter and more slender than the median, but have ap- proximately the same form. The palps are six to eight times as long as the prostomium and rather heavy. In the specimen they are very much wrinkled, a condition probably a result of the preserva- tion. The tentacular cirri are like the tentacles in form but are | 3 ZF 77ZLFF FIEIV IF eay eo LAGISCA CRASSA, NEW SPECIES. Fig. 1, ANTERIOR ENDX10; Fic. 2, Parapopium X17; Fic. 3, NEUROPODIAL SpraX170; Fie. 4, NoropopiaL Seta X 170. larger while the dorsal cirri have a similar form and are about as large as the median tentacle. All tentacles and cirri are colorless at the apex, an appearance which in some is heightened by a sub- apical pigment band. The contrast between the pigment band and the colorless apex sometimes makes them look as if the apex were slightly swollen, but this is evidently merely an optical effect. Ex- cept for this colorless apex, the cirri around the prostomium and the palps show traces of a brown color. A similar color appears on art. 23. A NEW MARINE ANNELID FROM CHILE—TREADWELL. 3 the dorsal cirri, and a poorly defined band of brown pigment extends along the mid-dorsal line of the body broken only by a prominent white patch in each somite near the dorsal anterior margin. This coloration is more sharply marked toward the posterior end of the fragment. On the dorsal surface of somites which do not carry cirro- phores is a rounded lobe lying in line with the cirrophores of other somites (fig. 2) and toward the posterior part of the specimen these knobs show the same brown color. The protruded proboscis is about twice as long as the palps and has at the apex, above and below, nine prominent conical marginal lobes. Most of the elytra are lost, but they evidently did not cover the dorsal surface when in place. They are roughly circular in outline, are more or less mottled with brown and under low power, because of the distribution of this pigment, look as if the margins were thicker than the center. This is apparently merely an effect produced by the pigment. The elytron is thickly studded over its surface with short sharp conical spines which extend to the margins and some- times protrude beyond this. The neuropodium (fig. 2), has an obliquely truncated setal lobe, with the upper outer angle prolonged into a conical “tongue” into which the apex of the acicula extends. Aside from this terminal protrusion the neuropodium is cylindrical, showing no narrowing up to the point where the truncation begins. The neural setae are smaller than the notal and are golden yellow in color. Each has (fig. 3) transversely arranged plates whose free margins are dentic- ulated. These plates are longer than the width of the seta so that seen in full face they extend on both sides of the shaft. In profile they have the appearance shown in the figure. The notopodial lobe of the parapodium is rounded in form and is shorter than the neuro- podial but has a similar apical “ tongue” into which the acicula ex- tends. The notopodial setae are chestnut-brown in color and are larger than the neuropodial. Each seta (fig. 4) has transverse rows of spines the row nearest the apex being the shortest and from here there is a gradual increase in length so that the longest are more than half as long as the diameter of the seta. Type.—Cat. No. 19101, U.S.N.M. oa we at on aH Pa thre saqenui, Leib ipa 1 Bi jaseienora ve dao # oe ad oiht $O°ohil futiolh ane. 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Sea {} .oit) gion Hoa dsiboqowien elt mada a ae si6d otutt hoe tetiode silt gated xoqe oft Heotnen’ wor ont eoniga 4 to gregh TORT dasystol od tect oa digoolai szavtont lenhers. 2 af ereda 498 Silt to sineily old ee gaol aa y gi! MME. AY egies oo JD Set ar weiiete tite , yp) bese > snd nee Seni ApS. or hos dian pei tedden UA antes Sng. ane reel 4 TS SP Oa a2 See Dannie: SCH ene epee ten de Sehtenerl tar a sabe 7g gine? band. The conta ewe the niemenl bee ae ni netepes mutes thea Jook: as Pee peal welll cs wiilsn, lab (las de srdentiveanepely an optiest wabeet: ee us Sree ot Phe thy aa ww) node oe eee fr ‘ traces Gf a brown Sobcn Asay “ibd arpa BENJAMINITE, A NEW SULPHOSALT MINERAL OF THE KLAPROTHOLITE GROUP. By Eart V. SHANNON, Assistant Curator, Department of Geology, United States National Museum. INTRODUCTION. The present description pertains to a mineral from near Round Mountain, Nye County, Nev., which occurs in a quartz vein with molybdenite, mica, and minor amounts of other minerals. Upon analysis this has been found to be an argentiferous sulphobismuthite of lead and copper differing in ratios from any known mineral. For this new mineral the name proposed is benjaminite, in honor of Dr. Marcus Benjamin of the United States National Museum. The specimens first examined were sent to the United States Geological Survey some years ago, where they were incorporated in a series of bismuth ores by Frank L. Hess and forwarded to the National Museum. It was not known who sent them in and the only information regarding them was contained in a label reading “Aikinite Mining Co., Round Mountain, Nevada.” It was con- cluded from the name of the mining company that the mineral had been identified as aikinite and that it was a characteristic mineral of the deposit. Nothing further could be learned about the mineral or the mine, however, until an inquiry was addressed to H. G. Clinton, of Manhattan, Nev. Fortunately Mr. Clinton was familiar with the mine, its geology, history, and mineralogy, and was able to visit the locality and to supply an additional very fine specimen of the benja- minite, especially welcome since the original small lot had been almost entirely used up in the several analyses, as well as specimens of the associated minerals. It developed from this correspondence that the material originally received at the Geological Survey had also come from Mr. Clinton. The writer takes this opportunity to acknowledge his obligation to Mr. Clinton for his generosity and his thorough knowledge of the region. The following is quoted from his letter: The Aikinite Mining Co. has been out of existence for years but they were operating the Outlaw Mine some 12 miles north of here [Manhattan] at the head of Mariposa Canyon. The mineral [benjaminite] occurs in large and small bunches and blotches in a dense white quartz, near the southern contact of a rock locally called pegmatite, but described by J. M. Hill as a soda-granite, and an intrusive rhyolite. I have No. 2537—PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. 65, ART. 24. 1 2 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 65 had assays of 300 ounces in silver from the mineral. I have also noted large flakes of molybdenite associated with it, but all that was ever mined has been carried away. I note that you have only a few fragments of the mineral left so I am sending my specimen, which is the finest I have yet seen. I hope to get more. I am sending also all the other minerals associated with it, including three or four colors of material that leach out of the ledge, also a small piece of the soda granite. Close to this Outlaw tunnel is a deposit of cinnabar with values in free gold. Three miles east on the same contact is another bismuth-silver deposit, the bismuth here being in the form of carbonate. Three miles west is a deposit of the molybdenite like the sample sent. ASSOCIATED MINERALS. The minerals occurring in the specimens with the benjaminite are quartz, chalcopyrite, pyrite, covellite, muscovite, molybdenite, and fluorite. The quartz is coarsely crystalline white vein quartz which forms the gangue of the other minerals. As seen in thin section under the Sere -| Chaicopyrite Covetlite Fie. 1.—SkrETCH CF POLISHED SURFACE OF BENJAMINITE SHOWING RELATION OF BENJAMINITE TO QUARTZ AND CHALCOPYRITE AND REPLACEMENT OF CHALCOPYRITE AND BENJAMINITE BY COVELLITE. Fic. 2.—SKETCH OF POLISHED SURFACE SHOWING RELATIONS OF BENJAMINITE, MOLYBDENITE CHALCOPYRITE, AND QUARTZ. microscope it forms broad interlocking crystals which contain numerous fluid inclusions which are visible with the higher powers of the microscope. Some of the largest of these contain bubbles and the smaller are aligned into strings. A later introduction of quartz took place filling numerous very fine fractures in the older quartz, and especially in the sulphides. These later quartz seams are especially conspicuous in polished surfaces of the sulphides under the microscope and are indicated in the drawing (fig. 2). Muscovite is common in the quartz as scales and aggregates of scales. The individual crystals range up to 1 cm. in diameter and are in part hexagonal in outline. In color the mica varies from pale ART. 24 BENJAMINITE, A NEW MINERAIL--SHANNON a green to white or pale brown and much of it has a more or less pearly luster. It is probably all of the margarodite variety of muscovite, low in potash and correspondingly high in basic hydrogen. Opti- cally it is negative with the acute bisectrix perpendicular to the plates, 2E estimated at 60° to 70°, a=1.562, 8= 1.597, y= 1.602, r>v weak. Other specimens from the mine consist entirely of masses of scales of mica, some of which contain scattered crystals of fluorite an rare masses of benjaminite. Pyrite occurs as cubic crystals which are rare in intimate associa- tion with the benjaminite. Other quartz specimens which contain no benjaminite show cubic crystals up to 3 cm. in diameter isolated in the quartz which also contains mica. The pyrite crystals are greatly shattered and show dis- ASS tinct cubic cleavage. hi \ ne Molybdenite occurs as a graph- lf, \ SS itic slickensided smear on frac- Lf i ALY \ tures and also as foliated scales Be and small rosettes of scales. It is occasionally interleaved with mica. Some of the rosettes reach a diameter of 5mm. Occasion- ally these have a sharp hexagonal outline and are made up of six triangular sectors with a twinning lme down the center and stria- tion on either side like the A structure of mica. As seen in polished sections the molybde- me Quartz Benjaminite nite is older than the benjamin- ite and its folia have been con- torted, separated, and bent by the later fractures, although the OMT nn yr Molybdenite Chaleo pyrite Wy yl, Fic 3.—SKETCH OF POLISHED SURFACE SHOW- ING RELATIONS OF BENJAMINITE, MOLYB- z DENITE, CHALCOPYRITE AND QUARTZ. cracks do not cross the folia but pass around their ends. The relations of the molybdenite to the other minerals are shown in the drawings (figs. 2 and 3). Fluorite occurs especially as isolated crystals in the granular masses of mica where it forms crystals up to 4 cm. in maximum size. The color varies from deep purple to purplish red, yellow and colorless. In the mica fluorite occurred in the same specimen with benjaminite but only one specimen shows fluorite in quartz and this does not contain any benjaminite. The fluorite forms a skeleton cube apparently developing by metasomatic replacement of the quartz. Chalcopyrite occurs only as minute, almost microscopic, grains and was introduced with the late quartz which fills fine cracks in 4 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 65 the benjaminite. It forms grains isolated in the quartz and smal! areas grown on the benjaminite or apparently, in some cases, re- placing the benjaminite. ‘This mineral is mainly clearly later than the benjaminite although a very little may be contemporaneous with it. The relations of the chalcopyrite are shown in figures 1, 2, and 3. Covellite occurs in minute amount as a later replacement, along cracks, of both chalcopyrite and benjaminite, preferring the latter. The field showing the greatest amount of this mineral is that shown in Figure 1. The amount of covellite present in the analyzed ma- terial was so exceedingly small that it emus not have any effect on the analytic results. Chalcocite was seen as a few rare and very minute areas replacing covellite. PARAGENESIS. The minerals may be arranged in the following paragenetic order although there is some doubt as to the mutual age relations of some of the earlier ones. 1. Quartz. . Muscovite. . Molybdenite. . Pyrite. . Fluorite. Benjaminite. . Quartz. . Chalcopyrite. . Covellite. . Chalcocite. While a considerable time gap may have intervened between the first five and the second five of these minerals it is most probable that the whole series belongs to a single genetic sequence although the covellite and chalcocite may be products of downward secondary enrichment. The benjaminite, a silver-bismuth ore mineral, is thus a constituent of a vein characterized by mica, molybdenite, and fluorite, minerals typical of high temperature veins of pegmatitic affiliations. Such a silver deposit is more or less unique. SOMDNMQAR WN —_ GENERAL DESCRIPTION OF BENJAMINITE. The benjaminite is the only abundant metallic mineral in the ore and carries the silver for which the mine was explored. It forms irregular masses up to 5 cm. in maximum diameter which have clearly developed along fractures in the quartz, apparently by replace- ment. The benjaminite contains some pyrite although many masses are free from it and it all contains fine grains of chalcopyrite developed along later minute quartz filled cracks. The color on fresh fracture ART, 24 BENJAMINITE, A NEW MINERAL—SHANNON 5 is medium gray and the luster is metallic with a greasy appearance. At first glance the mineral suggets massive tetrahedrite. It has a moderately good cleavage in one direction, somewhat interrupted by the later cracks. The masses are coarse equigranular and the mineral shows no tendency to platy, fibrous or prismatic form. Cleavage surfaces indicate the crystals to reach a maximum size of 15 mm. in the masses. Upon exposure the cleavage surface remains bright or becomes slightly yellow while in another direction the grains tarnish coppery red and in a third direction they become dull lead gray. Granular aggregates which have been exposed for some time look like a mixture of three minerals and the nondescript appearance is heightened by the quartz filled cracks, minute chalcopyrite grains and scattered pyrite and molybdenite. The streak is dull lead gray and only assumes a barely perceptible reddish gray tinge with long rubbing. The mineral scratches calcite but with difficulty and its hardness is thus about 3.3 to 3.5. PYROGNOSTICS, ETC. Benjaminite is soluble in hot concentrated nitric or hydrochloric acid and the solution gives the usual qualitative reactions for silver, copper, bismuth, and lead. Alone on charcoal it yields sulphurous fumes but is not reduced. With potassium iodide-sulphur mixture the usual conspicuous bismuth coating is obtained. In the closed tube it gives only a ring of sulphur and in the open tube only sulphur dioxide without the formation of any sublimate. MICROSCOPIC PROPERTIES. In polished sections under the metallographic microscope the ben- jaminite is medium gray, the color being about that of the average tetrahedrite. Examined with polarizing reflecting apparatus the mineral is found to be uniformly and very decidedly anisotropic but it exhibits no color pleochroism. When the surface is treated with the standard microchemical reagents hydrochloric acid, ferric chloride, mercuric chloride, and potassium hydroxide give negative results. With reagent nitric acid the surface effervesces and blackens and the fumes tarnish brown. These properties, according to Davy and Farnham’s scheme, would identify the mineral as aikinite, thus seemingly substantiating the qualitative identification. ANALYSES AND COMPOSITION. The specimens were at first labeled aikinite and the mineral not only gives the qualitative reactions of aikinite but greatly resembles the aikinite from Beresov, Siberia in the Museum collections. The analysis was at first undertaken as of aikinite from a new locality and was temporarily discontinued owing to the inhomogeneous 6 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 65 appearance of the material. A specimen was then polished and examined carefully by modern metallographic methods and, avoiding molybdenite and the scattered large grains of pyrite, was found to be homogeneous except for the small percentage of chalcopyrite. Four analyses were made in all on separate specimens, each of which was carefully selected and studied metallographically. In analysis 1 the presence of silver was not suspected and it was weighed with the copper. In analysis 2, made a year later, a large error was made by inadvertently filtering off a large part of the lead and weighing it in the form of sulphate, with the quartz. The value for lead in this analysis was adopted arbitrarily from the mean relation of lead to bismuth in the other three and the insoluble matter and sulphur were corrected in accordance. The results are given here because the determinations of copper, silver, and bismuth are of value. The analyses were made at intervals over three years and with variously modified procedures. Each analyzed sample was a thin slice which had been polished and examined metallographically and selected free from pyrite and with a minimum of molybdenite. These were crushed and screened to pass 100-mesh screens, the dust removed, and the quartz floated out by a gravity separation with methylene iodide. The quartz present in exceedingly thin veinlets yielded mixed grains so that the samples could not be entirely freed from quartz. The small chalcopyrite grains associated with the quartz could not be avoided although in one case they were largely removed magnetically. The results of the analyses are stated in detail, sepa- rately, below. Analysis 1 of benjaminite. : es Deduc- Recalcu- Constituent. Original. tions. Net. ited Quartz Vel Roe es ee Cn 13. 46 HSA Gi Bere ULE 2s | es Be ee ou ap Reena. LeOnk Bienen en epee 20h tess see es 20. 77 26. 87 Oppershs arys2t besa ses! dey SAIDROE ot PETS «PRGA AS Ee pee Bay 1. 92 6. 25 8. 09 Trois so Sener See ee 1. 69 B69. |> ac a3 eee Bismuth: 2egsala. beep seo JS BOii2 SALE hive 38. 36 49. 63 Molybdenum___---_-.---_----- . 60 60 eto 6 a eee Sul phe Sas ees ee eee a 14. 26 2. 35 ior 15. 41 Wotan ss) Ses. peer eran 20.02 | 77.29| 100.00 | The impurities deducted are the insoluble quartz and molybdenite equivalent to the total molybdenum and chalcopyrite equivalent to the total iron. These amount to quartz 13.46 per cent, molybdenite 1 per cent, and chalcopyrite 5.56 per cent. The results of analysis 2, recalculated as above noted, are as follows: ; ee ART, 24 BENJAMINITE, A NEW MINERAL—SHANNON 7 Analysis 2 of benjaminite (recalculated). : wos | Deduc- To Recalcu- Constituent. Original. | tions. Net. | ea i iteert epee es Ss ede 12. 83 | TQS ME ees od pe Oe ele a HIE ay ee ee cay pt a 2 T8Ooe |e eae 18. 53 23. 95 Wappees ssa oe eee see seek 4, 07 1. 85 | 222 | 2. 87 NOUS Si Gage a RRR RE pe Soa Ode | 3. 24 4.19 IDeA il oa Ss 1. 63 IG Bh | Soe se ete (2552 ae eee STS Hb Lees pS AIR ee clea aye AOA Se ei eat 41. 64 53. 83 Molybdenum: 223 22 c26e we . 46 59a | es pt Sa ka es mpc SelGbUns 2 ae ee 13..92 | 2. 19 | es 15.16 PG tebe ees 9) 2k 96. 32 | 18. 96 71. 30 100. 00 | The deducted impurities are quartz 12.83 per cent, molybdenite 0.77 per cent and chalcopyrite 5.36 per cent. Analysis 3 is the most dependable analysis of the four since the material was not only well selected but the method most suited for the several separations had been determined by the previous work. The powder used for analysis was, moreover, treated to a magnetic separation whereby a large part and possibly all of the chalcopyrite was removed. Although the iron found is considered below to be present as admixed chalcopyrite which is deducted, it is possible that the amount found in this analysis is essential to the benjaminite occurring as an isomorphous replacement of the lead. This would not affect the formula below derived but would rather tend to support it by bringing the analytical results into closer agreement with the calculated percentages. The analysis is as follows: Analysis 3 of benjaminite. : ons Deduc- Recalcu- Constituent. | Original. iawns: Net. lnted: | @ iar zien es cael eee Fd 8. 86 SHSGr Ce See ee Se ie eS INES teen ental PN ZO) oes Se reer 21. 70 | 25. 25 (Cop peheteae eae asec eeaae | 6. 65 ~ 65 6. 00 | 6. 98 SUA) a ae Se | QE SM wee ate eee 2. 78 | 3. 23 pronase 27525 20 oi Aue pera Wa dee PAD 8 | . 58 HOSs eee tes |e eran a Bismuth Amn s E Rae ei EN | AN Aliya lee oe am mm 41. 45 | 48. 24 Molybdenum-_------- wen aes | 1. 30 1S 0 Se ets ee ee ee Sul humsees eee ee | 15. 53 1. 53 14. 00 16. 30 Motels. 2/2 pe eet tete ete 98. 85 12. 92 85. 93 | 100. 00 45554—25—Proc.N.M.vol.65——44 8 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 65 The deductions amount to quartz 8.86 per cent, molybdenite 2.17 per cent and chalcopyrite 1.91 per cent. The fourth analysis, made as a final check on the preceding three was on a powder from which the chalcopyrite had not been removed magnetically. It gave the following results: Analysis 4 of benjaminite. . +e Deduc- Recalcu- Constituent. Original. ons. Net. EST Qiparr treo} eee ig neni hh AS ec ye 10. 00 1 O20 Orissa eh ee Tea Ted vies bee 5 ae LOW OR. Paeaw ous o 19. 98 24. 70 Conper 0 eee ee eee 5. 00 1. 59 3. 41 4, 22 Silvie Soar ee By) re ee Ste 2052 s)S ae ee sepa 2. 52 3. 11 Oy SS Ee eR a cea oe Be era 1. 40 dA Ne kee na MS a 3 SISTING eee een ee ee ee Ata627 2 eee 41. 62 51. 45 Nighy iim 232 i oe ts 1. 34 Dts te ole ole Foe ple SOURIS gah ee ae (15. 87) 2. 51 13. 36 16. 52 lot ahs cet ety ae 2) et ee 97. 73 16. 84 80. 89 100. 00 The recalculated percentages for the several analyses of the ben- aminite are collected and averaged in the following table: Average and comparison of recalculated analyses. l 2 Aver- Constituent. 1 iz 3 oe age. Weadiee AN Ae Oe 26. 87 23. 95 25.25 24. 70 25. 18 Coppers) Oe 444) oe oe a Fle 8 09 2. Si 6. 98 4, 22 4, 69 Silvers. et seers rn wee ae ee ; 4, 19 | 3. 23 | Soya Sao Bismuth” 2 AIO o7 2s er 49. 63 53. 83 48. 24 51. 45 50. 78 Sulphur. 2222223 oe EE 15. 41 15.06 16. 30 16. 52 15. 84 otal pee oe 100. 00 | 100. 00 | 100.00 | 100. 00 100. 00 The average column from the above table gives the ratios of the following table: Ratios of average analyses. Constituent. Per cent. Ratios. mete sdmeoo's! A (deag'c Shay Vike: