38 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



PSEUDOPYTHINA COMPRESSA Dall, 1899. 



Proc. U. S. Nat. Mus., vol. 21, p. 888, pi. 87, figs. 1, 8. 



Cape Lisburne, Arctic Ocean, to Acapulco. Commensal with Crustacean. 



PSEUDOPYTHINA MYACIFORMIS Dall, 1916. 



Proc. U. S. Nat. Mus., vol. 52, p. 412. 

 Commensal with Crustacean. Puget Sound. 



Genus BORN I A Philippi, 1836. 



BORNIA RETIFERA Dall, 1899. 



Proc. U. S. Nat. Mus., vol. 21, p. 889, pi. 87, fig. 2. 

 Monterey to Santa Barbara Islands, California. 



Genus LEPTON Turton, 1822. 



LEPTON MEROEUM Carpenter, 1864. 



Suppl. Rep. Brit Assoc, p. 643. 

 San Diego, California. 



Genus LASAEA Leach, 1827. 



LASAEA RUBRA Montagu, 1804. 



Test. Brit., p. 83, pi. 27, fig. 4.— Turton, Dithyra Brit., p. 57, pi. 11, figs. 7-8. 

 Vancouver Island, British Columbia, to Callao, Peru. Also Atlantic. 



Genus TURTONIA Alder, 1848. 



TURTONIA MINUTA Fabricius, 1780. 



Fauna Gronl., p. 412. — Forbes and Haneey, Brit. Moll., vol. 2, p. 81, pi. 18, 

 fig. 7. 



Bering Strait and south to Magdalena Bay, Lower California. Also North- 

 ern Atlantic. 



TURTONIA OCCIDENTALIS Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 150, pi. 14, figs. 12, 13. 

 Plover Bay, Bering Sea. 



Genus SPORTELLA Deshayes, 1858. 



SPORTELLA CALIFORNICA Dall, 1899. 



Proc. U. S. Nat. Mus.. vol. 21, p. S85, pi. 88. fig. 5. 

 Monterey, California. 



Genus ANISODONTA Deshayes, 1858. 



ANISODONTA? PELLUCIDA Dall, 1916. 



Proc. U. S. Nat. Mus.. vol. 52, p. 411. 

 Monterey Bay, California, off Del Monte. 



Family CHLAMYDOCONCHIDAE. 



Genus CHLAMYDOCONCHA Dall, 1884. 



CHLAMYDOCONCHA ORCUTTI Dall, 1884. 



Science, vol. 4, No. 76, p. 50.— Bernard, Ann. Sci. Nat., ser. 8, vol. 4, Zool. 



1897, p. 221-252, pi. 1, 2. 

 Monterey to False Bay, San Diego County, California. 



