OF THE NORTHWEST COAST OF AMERICx\ 27 



Genus Axinopsis G. O. Sars, 1878. 



Axinopsis viridis Dall, 1901. 



Arctic Ocean, on the west to northern Japan, on the east 



to the Aleutian and Coronado Islands. 

 Axinopsis sericatus Carpenter, 1864. 



Aleutian Islands south and east to Puget Sound, and Cata- 



lina Island, Cal. 



Family Diplodontidfe 

 Genus Diplodonta Bronn, 1831. 



Diplodonta aleutica Dall, 1901. 



Cape Lisburne, Arctic Ocean, to the Aleutians and east- 

 ward to Sitka Bay, Alaska. 



Diplodonta orbella Gould, 1852. 



PribilolT Islands, Bering- Sea, to Gulf of California. 



Diplodonta subquadrata Carpenter, 1855. 

 Catalina Island, Cal., to Panama. 



Subgenus Felaniella Dall, 1899. 



Felaniella sericata Reeve, 1850. 



San Diego, Cal., to Panama. 



Family Lucinidae 

 Genus Phacoides Gray, 1847. 

 Subgenus Here Gabb, 1866. 



Here richthofeni (labb, 1866. 



San Pedro, Cal., to Cape St. Lucas. 



Subgenus Liicinisca Dall, 1901. 



Lucinisca nuttallii Conrad, 1837. 



Santa Barbara, Cal., to AJazatlan, Mexico. 



Subgenus Lucinoma Dall. 1901. 



Lucinoma annulata Reeve, 1850. 



Port Althorj), Alaska, to Coronado Islands. 

 Lucinoma annulata var. densilineata Dall. 



Sitka, Alaska, to Esteros Bay, Cal. 

 Lucinoma aequizonata Stearns, 1890. 



Santa Barbara Islands to S. Lat. 38° (Chile). 



Subgenus Callucina Dall, 1901. 

 Section Epilucina Dall, 1901. 



Callucina californica Conrad, 1837. 



Crescent City, Cal., to San Ignacio Lagoon, Lower Cal. 



