NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 59 



Family CAVOLINIIDAE. 

 Genus CAVOLINA Abildgaard, 1791. 



CAVOLINA OCCIDENTALIS Dall, 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 Linnaens, 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 Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 140. 



Northeast Pacific between latitudes 30° and 50° north. 



Off the Farallone Islands in the stomach of Orthagoriscus 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 CYMBULLIDAE. 

 Genus COROLLA Dall, 1871. 



COROLLA SPECTABILIS Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 138; Zool. Jahrh., vol. 20, Heft 1, p. 07. 



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 Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 139. 



South of the Aleutian Islands, in latitude 51° 50', longitude 161° 26' west. 



