90 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



VOLUTOPSIUS MIDDENDORFFH Dall, 1891. 



I'roc. U. S. Nat Mus., vol. 14, p. 186; vol. 17, pi. 28, fig. 1, 1S94. 

 Bering Sea, 57 to 225 fatlioms. 



VOLUTOPSIUS SIMPLEX Dall. 1907. (Plate 9, fig. I.) 



Smithsonian Misc. Coll., vol. 50, p. 164. 



Off Bering Island, Bering Sea, in 72 fathoms. 



VOLUTOPSIUS ATTENUATUS Dall, 1874. 



I'roc. Cal. Acad. Sci., vol. 5, p. 253; Proc. U. S. Nat. Mus., vol. 24, pi. 36, 



fig. 3. 1902. 

 Arctic Ocean south to the Pribilof Islands and Bristol Bay. 



VOLUTOPSIUS TROPHONIUS Dall. 1902. (Plate 8, fig. 11.) 



Proc. U. S. Nat. Mus., vol. 24, No. 1264, p. 527. 

 Bering Sea, in 81 fathoms, south of the Pribilof Islands. 



VOLUTOPSIUS FILOSUS Dall, 1919. (Plate 10, fig. 1.) 



Proc. U. S. Nat. Mus., vol. 56, No. 2205. p. 310. 



From the Pribilof to the Aleutian Islands, Bering Sea. 



VOLUTOPSIUS CALLORHINUS Dall. 1877. 



Proc. Cal. Acad. Sci., vol. 7, p. 7 ; Sci. Res. Expl. Alaska, pi. 1, fig. 3, 1879. 

 Pribilof Islands, Bering Sea. 



VOLUTOPSIUS CALLORHINUS STEJNEGERI Dall, 1884. (Plate 8, fig. 9.) 



Proc. U. S. Nat. Mus., vol. 7, p. 346, pi. 2, fig. 5. 

 Bering Island. 



VOLUTOPSIUS CASTANEUS Morch, 1858. 



Novit. Couch., Moll. Marina, p. 7, pi. 1, figs. 1, 2. 



Pribilof, Aleutian, and Kodiak Islands, Alaska. (Sitka, Dunbar.) 



VOLUTOPSIUS REGULARIS Dall, 1873. 



Proc. Cal. Acad. Sci., vol. 5, p. 60, pi. 2, fig. 6. 

 Pribilof, Aleutian, and Sannakh Islands, Alaska. 



Genus BERINGIUS Dall, 1879. 



BERINGIUS CREBRICOSTATUS Dall. 1877. 



I'roc. Cal. Acad. Sci., vol. 7, p. </>; Sci. Res. Expl. Alaska, pi. 2, fig. 1, a-c t 



1879; Proc. U. S. Nat. Mus., vol. 24, pi. 35, fig. 1. 

 Plover Bay, the Aleutian Islands, and eastward to the Shumagin Islands, 

 Alaska. 



BERINGIUS CREBRICOSTATUS UNDATUS Dall, 1919. 



Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 311. 



Unalaska, Alaska, south and east to British Columbia in 238 fathoms. 



BERINGIUS KENNICOTTII Dall, 1907. 



Anier. Journ. Conch., vol. 7, p. 108; Proc. U. S. Nat. Mus., vol. 24, pi. 35, 



fig. 3, 1902. 

 Aleutian Islands to Cooks Inlet, Alaska. 



BERINGIUS KENNICOTTII INCISUS Dall. 1907. 

 Smithsonian Misc. Coll., vol. 50, p. 163. 

 Petrel Bank, Bering Sea, 54 fatlioms. 



