166 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
Genus ELACHISINA Dali, 1918. 
ELACHISINA GRIPPI Dali, 1918. 
Proc. Biol. Soc. Wash., vol. 31, p. 137 ; Proc. U. S. Nat. Mus., vol. 56, 
p. 354, 1919. 
Off San Diego, California, in 16 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 Dali, 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, 1839). 
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 Dali, 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 Dali, 1871 . 
Amer. Journ. Conch., vol. 7, pt. 2, p. 122, pi. 15, fig. 6. 
Puget Sound to Monterey, California. 
LAMELLARIA STEARNSII ORBICULATA Dali, 1871. 
Amer. Journ. Conch., vol. 7, pt. 2, p. 122, pi. 15, figs. 2, 3. 
Sannakh Islands, Alaska, to Gulf of California. 
LAMELLARIA DIEGOENSIS Dali, 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. - 
