NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 91 
BERINGIIIS STIMPSONI Gould, 1860. 
Troc. Boston Soc. Not. Hist., vol. 7, p. 325. 
I’oint Barrow to the Pribilof Islands, Alaska. 
BERINGIUS MALLEATUS Dali, 1884. 
Proc. U. S. Nat. Mus., vol. 7, p. 52.5. 
Arctic Ocean and Northern Bering Sea. 
BERINGIUS FRIELEI Dali, 1894. 
Proc. U. S. Nat. Mns., vol. 17, p. 711, pi. 27, fig. 8. 
Pribilof Islands, Bering Sea, G6 fathoms. 
BERINGIUS ALEUTICUS Dali, 1894. 
Proc. U. S. Nat. Mus., vol 17, p. 711, pi. 29. fig. 2. 
Ainukhta Pass, Aleutian Islands, 248 fathoms. 
BERINGIUS MARSHALLI Dall, 1919. (Plate 9, fig. 3.) 
Proc. U. S. Nat. Mus., vol. 56. p. 311. 
Pribilof Islands to Unalaska, Alaska. 
BERINGIUS INDENTATUS Dall, 1919. 
Proc. U. S. Nat. Mus;, vol. .56, p. 312. 
Kotzebue Sound to the Aleutian Islands, also north Japan seas. 
Genus LIOMESUS Stimpson, 1885. 
UOMESUS NASSULA Dall, 1901. (Plate 8. fig. 6.) 
Nautilus, vol. 15, No. 8, p. 89. 
Bering Sea from the I’ribilof Islands to the Peninsula of Alaska, 34 to 
121 fathoms. Japan? 
LIOMESUS OOIDES Middendorff, 1848. 
Bull. Acad. St. Petersb., vol. 7, No. 16, p. 6; Sib. Reise, vol. 2, 326, pi. 8, 
figs. 7, 8. 
Okhotsk Sea, also Pleistocene of Yesso, Hokkaido, Japan. 
LIOMESUS OOIDES CANALICULATUS Dall. 1874. 
I'roc. Cal. Acad. Sci., vol. 5, p. 252 ; Sci. Res. Expl. Alaska, pi. 4, fig. 4. 
Proc. U. S. Nat. Mus., vol. 24, pi. 38, fig. 2. 
Icy Cape, Arctic Ocean, to the Shumagin Islands. 
LIOMESUS NUX Dall, 1877. 
Proc. Cal. Acad. Sci., vol. 7, p. 7 ; Proc. U. S. Nat. Mus., vol. 24, pi. 38, fig. 7. 
Aleutian Islands to Shumagin Islands, Alaska. Also Japan Sea. 
Genus MOHNIA Friele, 1878. 
MOHNIA ROBUSTA Dall, 1913. (Plate 10, fig. 12.) 
Proc. Acad. Nat. Sci. Phila., p. .501. 
Off the Pribilof Islands, 987 to 1,401 fathoms. 
MOHNIA CORBIS Dall, 1913. (Plate 12, fig. 10.) 
Proc. Acad. Nat. Sci., Phila., p. 501. 
Off the Pribilof Islands, 1,771 fathoms. 
MOHNIA FRIELEI Dall, 1891. 
Proc. U. S. Nat. Mus., vol. 14, p. 186 ; vol. 17, pi. 29, fig. 8, 1894. 
Off Queen Charlotte Islands, British Columbia, in 876 fathoms. 
