NORTHWEST COAST MARINE SHELLBEARING MOLLXJSKS. 155 
Genus HALOCONCHA Dali, 1886. 
HALOCONCHA REFLEXA Dali, 1884. 
Proc. U. S. Nat. Mus., vol. 7, p. 344, pi. 2, figs. 1-3. 
Pribilof Islands 
HALOCONCHA MINOR Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 350. 
Commander, Pribilof and Aleutian Islands eastward to Chirikoff Island, 
Alaska. 
Genus AQUILONARIA Dali, 1886. 
AQUILONARIA TURNERI Dali, 1886. 
Proc. U. S. Nat. Mus., vol. 9, p. 204, pi. 3, figs. 1-3. 
Arctic Ocean near Bering Strait. Also Labrador. 
Family FOSSARIDAE. 
Genus FOSSARUS Philippi, 1840. 
FOSSARUS PARCIPICTUS Carpenter, 1864. 
Ann. Mag. Nat., Hist., ser. 3, vol. 13, p. 476. 
Todos Santos Bay, Lower California, to Panama. 
FOSSARUS ANGIOLUS Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 350. 
Todos Santos Bay near San Diego, California. 
Genus ISELICA Dali, 1918. 
ISELICA FENESTRATA Carpenter, 1864. (Plate 13, fig. 2.) 
Ann. Mag. Nat., Hist., ser. 3, vol. 14, p. 429 . — Tryon, Man., vol. 9, p. 272, 
pi. 52, fig. 11. 
Puget Sound to the Gulf of California. 
ISELICA OBTUSA Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 656; Proc. Cal. Acad. Sci., vol. 3, p. 217. 
Monterey to San Diego, California. 
ISELICA OBTUSA LAXA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p., 251. 
Vancouver Island and Puget Sound. 
Family LITIOPIDAE. 
Genus LITIOPA Rang, 1829. 
LITIOPA BOMBYX Rang, 1829. 
Ann. Sci. Nat., p. 203.— Tryon, Man., vol., 9, pi. 53, fig. 74. 
Southern California and Gulf of California. Pelagic. 
Genus ALABA A. Adams, 1862. 
ALABA JEANETTAE Bartsch, 1910. 
Proc. U. S. Nat. Mus., vol. 39, p. 155, figs., 3, 4. 
San Pedro, California, to Gulf of California. 
