128 LAND AND FRESH WATER MOLLUSKS 



receding freshets ! Avacha Bay, Kamchatka ! Amur River ! eastern 

 Siberia and Mongolia. 



Anodonta kennerleyi Lea. 



Anodonta kennerleyi LEA, Proc. Acad. Nat. Sci. Phila., IV, p. 306, 1860; 

 Journal, v, p. 108, pi. xvm, fig. 256, 1862. 



Range. Puget Sound ! British Columbia. 



Anodonta oregonensis Lea. 



Anodonta oregonensis LEA, Trans. Am. Phil. Soc., vi, p. 80, pi. xxi, fig. 67, 



1838. 



Margarita (Anodontd} oregonensis LEA, Synopsis, p. 30, 1837. 

 Anodonta cognata GOULD, Proc. Boston Soc. N. Hist., in, p. 294, 1850; 



Rep. on Moll. U. S. Expl. Exp., p. 435, pi. xxxvm, figs. 546, a-b, 1852. 



Range. Northern California, Oregon and British Columbia; 

 eastward to Great Salt Lake, Utah. 



Vancouver Island, B. C., abundant near Victoria, and at Nootka; 

 Sumas Lake, Fraser River valley, B. C. Shushwap Lake ; Nicola 

 Lake and Okanogan Lake, B. C. ; Kadiak Island, Alaska (Fisher) . 



Anodonta nuttalliana Lea. 



Anodonta nuttalliana LEA, Trans. Am. Phil. Soc., vi, p. 77, pi. xx, fig. 62, 



1838. 

 Anodonta triangularis TRASK, Proc. Acad. Nat. Sci. Calif., i, p. 29, Feb. 19, 



1855. 

 Anodon triangularis SOWERBY, Conch. Icon., xvn, pi. xxix, fig. 56 b, 1870. 



Range. California in the Sacramento River, and northward to 

 British Columbia, Nootka and Clayoquot Sound, Vancouver Island ; 

 Chilliwak Lake, Nicola Lake and Shushwap Lake, British Columbia. 



Anodonta wahlamatensis Lea. 



Anodonta ivahlamatensis LEA, Trans. Am. Phil. Soc., vi, p. 78, pi. xx, fig. 



64, 1838. 



Anodonta rotundovata TRASK, Proc. Acad. Nat. Sci. Calif., I, p. 29, 1855. 

 Anodon rostratus SOWERBY, Conch. Icon., xvn, pi. n, fig. 4, 1872. 

 Anodonta laosensis FISCHER, Bull. Soc. N. Hist., d'Autun, p. 219, 1891. 

 Anodonta rotundata SIMPSON, Synopsis, p. 629, in synonymy, 1900, not of 



Trask. 



Range. Utah and westward, California to British Columbia in 

 the Pacific. 



Nootka, Vancouver Island ; Sumas Lake and Prairie, Fraser River 

 valley, British Columbia. 



Anodonta marginata Say. 



Anodonta marginata SAY, Nicholson's Encyclop., 1st Am. ed., II, Art. Con- 

 chology, p. 19, pi. in, fig. 5, 1817. 



