NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 59 
Family CAVOLIN]j^DAE. 
Genus CA VOLINA Abildgaard, 1791. 
CA VOLINA OCCIDENTALIS Dali, 1908. 
Bull. Mus. Comp. Zool., vol. 43, No. 6, p. 233, pi. 12, fig. 1. 
Northeast Pacific between latitudes 30° and 54° north. 
Genus CLIO Linnaej^s, 1767. 
CLIO EXACUTA Gould, 1852. 
U. S. Expl. Exp. Shells, p. 488, pi. 51, fig. 605. 
North Pacific Ocean west of Columbia River. 
CLIO OCCIDENTALIS Dali, 1871. 
Amer. Journ. Conch., vol. 7, p. 140. 
Northeast Pacific between latitudes 30° and 50° north. 
Off the Farallone Islands in the stomach of OrtJiagoriscus mola. 
Genus STYLIOLA Lesueur, 1826. 
STYLIOLA FALCATA Gould, 1852. 
U. S. Expl. Exp. Shells, p. 490, pi. 51, fig. 608. 
Northeast Pacific, west of Oregon. 
Genus CRESEIS Rang, 1828. 
CRESEIS SUBULA Quoy and Gaimard, 1827. 
Ann. Sci. Nat, vol. 13, p. 313, pi. 17, fig. 1. 
Warmer waters of the north Pacific. 
Family CYMBUL|!iDAE. 
Genus COROLLA Dali, 1871. 
COROLLA SPECTABILIS Dali, 1871. 
Amer. Journ. Conch., vol. 7, p. 138; Zool. Jahrb., vol. 20, Heft 1, p. 67, 
pi. 5, 1904. 
North Pacific Ocean from Monterey to latitude 43° north. Japan seas. 
Suborder Gymnosomata. 
Family CLIONIDAE. 
Genus CLIONE Pallas, 1774. 
CLIONE LIMACINA Phipps, 1773. 
Voy. N. Pole, p. 195. — Pallas, Spic. Zool., pi. 1, figs. 18-19, 1774. 
Circumboreal. Northern Bering Sea south to the Pribilof Islands, rarely 
to the Aleutians. 
CLIONE ELEGANTISSIMA Dali, 1871. 
Amer. Journ. Conch., vol. 7, p. 139. 
South of the Aleutian Islands, in latitude 51° 50', longitude 161° 26' west. 
