112 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



NUCELLA LAMELLOSA FRANCISCANA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 565, pi. 74, fig. 6. 

 San Francisco Bay, California. 



NUCELLA LAMELLOSA HORMICA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 565, pi. 74, fig. 8. 

 Inner Harbor of Sitka, Alaska. 



NUCELLA LAMELLOSA NEPTUNEA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 565. 

 Cook's Inlet, Alaska. 



NUCELLA LAMELLOSA CYMICA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 565, pi. 74, fig. 5. 

 Surf-beaten rocks, coast of Washington. 



NUCELLA LAMELLOSA SITKANA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 566, pi. 74, fig. 4. 

 Inner Harbor, Sitka, Alaska. 



NUCELLA LIMA Martyn, 1784. 



111. Nondescript Shells, table 2, pi. 46; Proc. T*. S. Nat. Mus., vol. 49, pi. 75, 

 figs. 4-6, 1915. 



Kotzebue Sound, Arctic Ocean, south on the west to Bering Island, the Kuril 

 Islands and Northern Japan, on the east to the Aleutian Islands, Alaska, 

 Monterey, and San Diego, California, and Cerros Island, Lower California. 



NUCELLA CANALICULATA Duclos, 1832. 



Ann. Sci. Nat., vol. 26, p. 104, pi. 1, fig. 1. 



The whole Aleutian chain, eastward to Sitka and southward to Monterey. 



NUCELLA CANALICULATA ANALOGA Forbes, 1850. 

 Proc. Zool. Soc, p. 273, pi. 11, fig. 12. 

 California. (Forbes.) 



NUCELLA CANALICULATA COMPRESSA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 569, pi. 74, fig. 2. 

 Monterey, California. 



NUCELLA EMARGINATA Deshayes, 1839. 



Revue Zool. Soc. Cuv., p. 360.— GujSrin, Mag. de Zool., 1841, pi. 25. 



Bering Island and the Okhotsk Sea on the west ; on the east from Hag- 



meister Island, Bering Sea, and southward to, California, Mazatlan, and 



Topolobampo. Mexico. 



NUCELLA EMARGINATA OSTRINA Gould, 1852. 



Kept. U. S. Expl. Exp., Moll., p. 244. pi. 18, figs. 310 n-b. 

 Tillamook, Oregon. 



NUCELLA EMARGINATA PROJECTA Dall, 1915. 



Proc. U. S. Nat. Mus., vol. 44, p. 571, pi. 75, fig. 3. 

 Sitka, Alaska. 



Genus ACANTHINA Fischer, 18G7. 

 Subgenus Acantiiinuceexa Cooke, 1918. 



ACANTHINUCELLA SPIRATA Blainville, 1832. 



Nouv. Ann. du Mus. Paris, vol. 1, p. 252, pi. 12, fig. S. 

 Puget Sound to San Diego, California, and Socorro Island. 



