166 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



Genus ELACHISINA Dall, 1918. 



ELACHISINA GRIPPI Dall, 1918. 



Proc. Biol. Soc. Wash., vol. 31, p. 137; Proc. U. S. Nat. Mus., vol. 56, 



p. 354, 1919. 

 Off San Diego, California, in 1G to 20 fathoms. 



Genus BULBUS Brown, 1839. 



BULBUS FRAGILIS (Leach, 1819) APERTUS (Loven) Middendorff, 1851. 



Journ. de Phys., vol. 88, p. 464 ; Midd., Sibirische Reise, pi. 11, figs. 1-3. 

 Icy Cape, Arctic Ocean, south to the Aleutian Islands and eastward to the 

 Shumagin Islands. 



Genus AMAUROPSIS Morch, 1857. 



AMAUROPSIS PURPUREA Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 124, pi. 15, fig. 16; Proc. U. S. Nat. Mus., 

 vol, 24, pi. 38, fig. 9 (?Zool. Beechey's Voy., pi. 37, fig. 4, 1S39). 



Arctic coast westward from Bernard Harbor, to Point Barrow and south 

 to Plover Bay and Nunivak Island, Bering Sea. 



NARICACAE? 

 Family VANICOROIDAE ? 



Genus MEGALOMPHALUS Brusina, 1871. 



MEGALOMPHALUS CALIFORNICUS Dall, 1903. (Plate 14, fig. 7.) 



Proc. Biol. Soc. Wash., vol. 16, p. 175. 

 Santa Barbara Islands, California. 



MARSENIACEA 



Family LAMELLARIIDAE. 



Genus LAMELLARIA Montagu, 1815. 



LAMELLARIA STEARNSII Dall, 1871 . 



Amer. Journ. Conch., vol. 7, pt. 2, p. 122, pi. 15, fig. 6. 

 Puget Sound to Monterey, California. 



LAMELLARIA STEARNSII ORBICULATA Dall, 1871. 



Amer. Journ. Conch., vol. 7, pt. 2, p. 122, pi. 15, figs. 2, 3. 

 Sannakh Islands, Alaska, to Gulf of California. 



LAMELLARIA DIEGOENSIS Dall, 1885. 



Proc. U. S. Nat. Mus., vol. 8, p. 538, pi. 24, figs. 1, 2, 3. 

 San Pedro and the islands to San Diego, California. 



LAMELLARIA DIGUETI Rochebrune, 1895. 



Mus. d'Hist. Nat., Paris, Bull. 1, p. 240. 

 San Pedro, California, to Gulf of California. 



