138 LAND AND FRESH WATER MOLLUSKS 



Sphaerium patella Gould. 



Cyc las patella GOULD, Proc. Boston Soc. Nat. Hist., in, p. 292, 

 1850; U. S. Expl. Exped. Moll., p. 426, pi. xxxvi, figs. 527, 

 a-b, 1852. 



Sphczrium patella PRIME, Mon. Am. Corbie., p. 42, fig. 36, 1865. 



FIG. 105. Range. Northern California to British Columbia. 

 Sphar- Healdsburg, Calif. ! Wallawalla, Vancouver and Seattle, 



j, Wash.; Nanaimo, and in duck's crop at Fender Island! 

 t e 1 1 a. 



British Columbia. 



Sphaerium emarginatum Prime. 



Cyclas emarginata PRIME, Proc. Boston Soc. Nat. Hist., iv, p. 156, 1851. 

 Spharium emarginatum PRIME, Mon. Am. Corbie., p. 43, fig. 38, 1865. 



Range. Lake Superior ; Saskatchewan River at Grand Rapids, 

 near Lake Winnipeg ! 



106 107 



FIG. 106. Spharium emarginatum Prime. 

 FIG. 107. Sphczrium flavum Prime. 



* Sphaerium flavum Prime. 



Cyclas flava PRIME, Proc. Boston Soc. Nat. Hist., iv, p. 155, 1851. 

 Sphcerium flavum PRIME, Mon. Am. Corbie., p. 43, fig. 39, 1865. 



Range. Lake Superior ; Sault Ste. Marie, Mich. 



Sphaerium tumidum Baird. 



Sphcerium tumidum BAIRD, Proc. Zool. Soc. London, 1863, p. 69. PRIME, 

 Mon. Am. Corbie., p. 44, 1865. 



Range. Sumas Prairie, Fraser River valley, British Columbia. 

 This species appears not to have been figured or subsequently recog- 

 nized by collectors. 



Sphaerium spokani Baird. 



Sphcerium spokani BAIRD, Proc. Zool. Soc. London, for 1863, p. 69. PRIME, 

 Mon. Am. Corbie., p. 44, 1865. 



Range. Spokane and Kootenai Rivers, eastern British Columbia. 

 Unfigured, and not recognized by later collectors. 



Sphaerium (Musculium) raymondi Cooper. 



Spharium raymondi }. G. COOPER, Proc. Acad. Sci. Calif. , 2d series, HI, p. 

 74, pi. i, figs. 1-8, 1890. 



