152 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
TURRITELLA COOPERI Carpenter, 186j^. 
Proc. Cal. Acad. Sci., vol. 3, p. 216. — Tryon, Man., vol. 8, p. 200, pi. 61, fig. 61. 
Monterey to San Diego, California. 
Genus TURRITELLOPSIS G. O. Sars, 1878. 
TURRITELLOPSIS ACICULA STIMPSONI Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 347 . — Saks, Moll. Reg. Arct. 
Norv., pi. 10, fig. 14. 
Nunivak Island, Alaska, to San Diego, California. Circiimboreal. 
Genus TACHYRHYNCHUS Morch, 1868. 
TACHYRHYNCHUS EROSUS Couthouy, 1838. 
Boston Journ. Nat. Hist., vol 2, p. 103, pi. 3, fig. 1. 
Arctic Ocean, south on the west to the Kuril Islands, and on the east to- 
the Aleutian Islands and Kodiak, Alaska. Also Greenland. 
TACHYRHYNCHUS EROSUS MAJOR Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 346. 
Mouth of the Colville River, Arctic Alaska and south through the eastern 
part of Bering Sea to the Pribilof and Unimak Islands. 
TACHYRHYNCHUS RETICULATUS Mighels, 1842. 
Boston Journ. Nat. Hist., vol. 4, p. 50, pi. 4, fig. 19. p.5^. 
Arctic Ocean and eastern Bering Sea to the Aleutian Islands and southward 
to British Coluihbia. Also Greenland. 
TACHYRHYNCHUS LACTEOLUS Carpenter, 1865. (Plate 6, fig. 2.) 
Proc. Acad. Nat. Sci. Phila., p. 62. 
Chignik Bay, Alaska Peninsula, east and south to Point Abreojos, Lower 
California. 
TACHYRHYNCHUS LACTEOLUS SUBPLANATUS Carpenter, 1865. 
Proc. Acad. Nat. Sci. Phila., p. 62. 
Puget Sound to San Diego, California. 
? TACHYRHYNCHUS PRATOMUS Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 347. 
Semidi Islands, Alaska, in 20 fathoms, to Lower California. 
? TACHYRHYNCHUS STEARNSII Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 347. 
San Pedro, California. 
Family LITTORINIDAE. 
Genus LITTORINA (Ferussac, 1822.^ ^ 
Section MTT6IlIiNA."-« F=6. 
/ 
LITTORINA PALLIATA Say, 1822. 
Journ. Acad. Nat. Sci. Phila., vol. 2, p. 240; Gould, Inv. Mass., p. 261, fig. 177. 
Atlantic. Pliocene of Nome, Alaska, (not known living on the Pacific side). 
