138 LAND AND FRESH WATER MOLLUSKS 



Sphaerium patella Gould. 



Cyclas patella GOULD, Proc. Boston Soc. Nat. Hist., ill, p. 292, 

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

 a-b, 1852. 



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



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

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

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

 British Columbia. 



Sphaerium emarginatum Prime. 



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

 Sphcerium 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. Sphcerium emarginatum Prime. 

 FIG. 107. Sphcerium 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. 



Sphaeriuin 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. 



Sphcerium raymondi J. G. COOPER, Proc. Acad. Sci. Calif., 2d series, in, p. 

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



