PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES Fourth Series Vol. XXVII, No. 15, pp. 393-397 July 11, 1952 SOME DECAPOD CRUSTACEA DREDGED OFF THE COAST OF CENTRAL CALIFORNIA BY DELBERT G. GOODWIN California Academy of Sciences In the following pages an attempt has been made to list the species of decapod Crustacea which were obtained during the dredging operations of the California Academy of Sciences under Contract No. N9 onr 94400 with the Office of Naval Research. The work was performed largely with equip- ment designed to secure geological material ; nevertheless some interesting and important species were obtained. If equipment which was better adapted to collecting biological material had been used a greater number of forms might have been obtained ; however, it is doubtful if such gear as trawls could have been used successfully on the rugged terrain of the continental slopes which was being investigated. Under each species there is recorded the stations where collected, together with the depth. All stations so indicated are located off the coast of central California between lines drawn westerly from Half Moon Ba,v and Point Reyes. For complete geographic data for all stations, a preceding paper of this series (Vol. XXVII, No. 9) by G D. Hanna, on the geological results should be consulted. All specimens referred to are deposited in the collec- tions of the Academy. Gennadas borealis Rathbun Gennadas borealis Ratiibin, Proc. U. S. Nat. Mus., vol. 24, No. 1272, pp. 887-888, 1902. Type locality off Copper Island, Kamchatka, 1,567 fathoms. This species was collected at Sta. 44, in 1300-1380 fathoms, a locality near Guide Seamount, which is within the known range. [ 393] 394 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. Pasiphaea pacifica Rathbiin Pasiphaea pacifica Rathbun, Proc. U. S. Nat. Mus., vol. 24, No. 1272, p. 905, 1902. Type locality, off Point Sur, California, 328 fathoms. One specimen was taken at Sta. 61, in 400-450 fathoms, near Cordell Bank. Three additional specimens, which lacked some diagnostic characters, were collected at Sta. 58 in 600 fathoms. Acanthephyra cristata Faxon Acanthephyra cristata Faxon, Bull. Mus. Comp. Zool., vol. 24, No. 7, p. 206, 1893. Type locality. Albatross Sta. 3361, latitude north 6°10'0", longitude west 83°6'0", 1,471 fathoms; collected also at Sta. 3381, latitude north 4°56'0", longitude west 80°52'30", 1,772 fathoms. Only one specimen was taken at Sta. 62, in 1150-1000 fathoms, approxi- mately 18 miles north of Farallon Light. Acanthephyra curtirostris Wood-Mason Acanthephyra curtirostris Wood-Mason, Ann. Mag. Nat. Hist., Ser. 6, vol. 7, No. 38, p. 195, 1891. Type locality, Bay of Bengal, 840 fathoms. One specimen was taken at Sta. 62, in 1150-1000 fathoms, off the Farallon Islands, California. This probably extends the northern range of A. curti- rostris from San Clemente Island to the Farallon Islands. Hymenodora frontalis Rathbun Hymenodora frontalis Rathbun, Proc. U. S. Mus., vol. 24, No. 1272, p. 904, 1902. Type locality, west of Unalaska, 322 fathoms. This species was collected off San Francisco in 1150-1000 fathoms, at Sta. 62. Spirontocaris cristata (Stimpson) Hippolyte cristata Stimpson, Proc. Acad. Nat. Sci. Phila., vol. 12, p. 33, 1860. Type locality, San Francisco, California. A number of specimens were taken at Sta. 55, at Drakes Bay, 5 fathoms. Crago resima (Rathbun) Cragon resima Rathbun, Proc. U. S. Nat. Mus., vol. 24, No. 1272, p. 889, 1902. Type locality, off San Diego, California, in 124 fathoms. Several specimens were taken on Sta. 20, in 62-GO fathoms, on Cordell Bank. Vol. XXVII] GOODWIN: DEEP-WATER DECAPOD CRUSTACEA 395 Crago nigricauda (Stimpson) Cragon nigricauda Stimpson, Proc. Calif. Acad. Nat. Sci., vol. 1, pt. 2D., p. 97, 1856. Type locality, Tomales Bay, California. This common shrimp of the California coast was taken well within the known geographic and bathymetric range at Sta. 55, at Drakes Bay, in 5 fathoms. Lopholithodes foraminatus (Stimpson) Echidnocerus foi'ammatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, pp. 79-80, 1862. Type locality, off San Francisco, California. Seventeen of these crabs were taken at Sta. 23, Fanny Shoal, 62 fathoms. Munida quadrispina Benedict Munida quadrispina Benedict, Proc. U. S. Nat. Mus., vol. 26, No. 1311, pp. 269-270, text fig. 17, 1902. Type locality, off Cape Beale, Vancouver Island, British Columbia, 66 fathoms. Seven specimens were collected at Sta. 12, 3% miles off Cordell Bank, in 218-100 fathoms ; -4 additional specimens were taken at Sta. 22, 8 miles off Fanny Shoal, in 400 fathoms. Munidopsis verrilli Benedict Munidopsis verrilli Benedict, Proc. U. S. Nat. Mus., vol. 26, No. 1311, p. 291, text fig. 84, 1902. Type locality, off San Diego, California, 822 fathoms. One specimen was collected at Sta. 28, in 600-450 fathoms, off Pioneer Seamonnt ; and one from Sta. 29, 440-450 fathoms, in the same vicinity. This is probably an extension in range for M. verrilli from ]\Ionterey Bay to Pioneer Seamount, California. Chorilia longipes Dana Chorilia longipes Dana, Amer. Journ. Sci. Arts, Ser. 2, vol. 2, No. 32, pt. 6, p. 269, 1851. Several specimens were collected at Sta. 10, Cordell Bank, in 34 fathoms ; also Sta. 22, 400 fathoms. Chionoecetes tanneri Rathbun Chionoecetes tanneri Rathbun, Proc. U. S. Nat. Mus., vol. 16, No. 927, pp. 76-78, pi. 4, figs. 1-4, 1893. Type locality. Gulf of Farallones, California, 29 fathoms. This species was taken at Sta. 38, on ]\liilberry Seamonnt, 690-800 fathoms ; also at Sta. 52, off San Francisco, in 300 fathoms. 396 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4tii Ser. Plate 20 Fig. 1. Discorbis laquei Church, n. sp. Holotype No. 9517 (C. A. S.) from Pacific ocean 10 miles southeast of Shelter Cove, Mendotino County, California, dredged in 85-92 fathoms. Length, 4.4 mm.; breadth, 3.9 mm. Page 375. Fig. 2. Liotia farallonensis A. G. Smith, n. sp. Holotype No. 9527 (C. A. S.), from Southeast Farallon Island, California, in bird guano. Altitude, 10.3 mm.; maximum diameter, 12.9 mm. Page 385. Fig. 3. Liotia farallonensis A. G. Smith, n. sp. Apical view of specimen shown in figures 2 and 4. Fig. 4. Liotia farallonensis A. G. Smith, n. sp. View of base of specimen shown in figures 2 and 3. Fig. 5. Discorhis laquei Church, n. sp. Edge view of specimen shown in figures 1 and 8. Fig. 6. PlacipJwrella (Placophoropsis) pacifica Berry. Hypotype No. 9529 (C. A. S.), from U. S. Mulberry Station 27, Lat. 37°24.4' N., Long. 123°23.5' W., on slope of Pioneer Seamount, in 500-700 fathoms, on volcanic rock. Length, 30.5 mm. ; width, 22.5 mm.; height, 5 mm. Page 390. Fig. 7. Calliostoma platinum Dall. Hypotype No. 9525 (C. A. S.), from Loc. 33242 (C. A. S.), N. B. Scofield, Calif. Fish and Game vessel. Station 51-B-14, Pacific ocean, in 220-236 fathoms; Santa Cruz Island, California, bears 42°T., about 10 miles distant. Height, 29 mm., maximum diameter, 27.8 mm. Delbert Goodwin collector. Fig. 8. Discorbis laquei Church, n. sp. View of opposite side of specimen shown in figure 1. Fig. 9. Cidarina cidaris A. Adams. Hypotype No. 9526 (C. A. S.), Loc. 33243 (C. A. S.), N. B. Scofield, Calif. Fish and Game vessel. Station 51-B-8, Pacific ocean, in 80 fathoms; Anacapa Light bears 195 °T., 9 miles distant. Height, 33 mm.; maxi- mum diameter, 26.8 mm. Delbert Goodwin collector. Fig. 10. Placiphorella (Placophoropsis) pacifica Berry. Dorsal view of specimen shown in figures 6 and 11. Fig. 11. Placiphorella (Placophoropsis ) pacifica Berry. Ventral view of specimen shown in figures 6 and 10. Fig. 12. Lima (Acesta) mori Hertlein, n. sp. Holotype, right valve. No. 9524 (C. A. S.), from Loc. 33027 (C. A. S.), U. S. Mulberry, Station 38, Lat. 37°26.5' N., Long. 123°28.7' W., Mulberry Seamount, in 690 to 800 fathoms. Height, 61.8 mm.; length, 55 mm. View of interior. Page 379. Fig. 13. Lima (Acesta) mori Hertlein, n. sp. View of exterior of specimen shown in figure 12. PROC. CALIF. ACAD. SCI., VOL. XXVII, NOS. 11, 12, 13, 14, 15 [CIIIRCH, IIERTLEIN, SMITH, SMITH & HANNA] PLATE 20 [397]