NOKTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 167 
Section MARSENINA Gray, 1850. 
LAMELLARIA RHOMBICA Dali, 1871. 
Amer. Journ. Conch., vol. 7, pt. 2, p. 122, pi. 15, figs. 4, 5. 
Neah Bay, Washington, to Magdalena Bay, Lower California. 
Genus ONCHIDIOPSIS Bergh, 1853. 
ONCHIDIOPSIS HANNAI Dali, 1916. 
Proc. Acad. Nat. Sci. Phila., p. 376. 
St. Paul Island, Pribilof group, Bering Sea. 
Family VELUTINIDAE. 
Genus VELUTINA Fleming, 1822. 
VELUTINA PROLONGATA Carpenter, 186y[{. 
Ann. Mag. Nat. Hist., ser. 3, vol. 15, p. 32. 
Bering Strait to Monterey, California. 
VELUTINA ZONATA Gould, 1841. 
Invert. Mass., p. 242, fig. 160. 
Icy Cape, Arctic Ocean, to Monterey, California ; also Atlantic. 
VELUTINA LAEVIGATA (Linnaeus) Muller, 1776. 
Syst. Nat., ed. 12, p. 12.50 ; Zool. Danica, pi. 101, figs. 1-4. 
Icy Cape, Arctic Ocean, to Monterey, California ; also Atlantic. 
VELUTINA CONICA Dali, 1886. 
Proc. TJ. S. Nat. Mus., vol. 9, p. 305, pi. 3, fig. 10. 
Aleutian Islands eastward to Kodiak and south to Forrester Island, Alaska. 
VELUTINA GRANULATA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 355. 
Monterey, California, in 55 fathoms. 
VELUTINA CORIACEA Pallas, 1788. 
Nov. Acta Acad. Petrop., vol. 2, p. 237. — Tryon, Man., vol. 8, pi. 28, figs. 
49, 50. 
Bering Sea, and the Okhotsk Sea. 
VELUTINA CRYPTOSPIRA Middendorff, 1849. 
Mai. Rossica, pt. 2, p. 106 ; Sibirische Reise, pi. 25, figs. 8, 9, 10. 
Gulf of Alaska. /WX" 
VELUTINA SITKENSIS A. Adams, 1851. ^ 
Proc. Zool. Soc., p. ^ 
Bering Sea; Sitka, Alaska (Adams). 
Genus TORELLIA Loven, 1867. 
TORELLIA AMMONIA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 355. 
Southwest of Sannakh Island, Alaska, in 41 fathoms. 
TORELLIA VALLONIA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 355. 
Nazan Bay, Atka Island, Aleutians. 
