I38 LAND AND FRESH WATER MOLLUSKS 



Sphaerium patella Gould. 



Cyrtas 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. 

 Sphcerium 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, 



turn pa- -yy^gk Nanaimo, and in duck's crop at Pender Island! 

 t e 1 1 a. . . ' r 



British Columbia. 



Sphaerium emarginatum Prime. 



Cyclas emargtnata 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 ! 



107 



Sphcerium emarginatum Prime. 

 Sphariutn Jlavum Prime. 



* Sphaerium flavum Prime. 



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

 Sphcerium flaviim 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. 



Sphcerium raymondi J. G. Cooper, Proc. Acad. Sci. Calif., 2d series, III, p. 

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



