FAMILY SPH^ERIIDvE 139 



Primella raymondi COOPER, op. cit., p. 82. 



Sph(Erium cooperianum PRIME, Cat. Corbie., Am. Journ. Conch., v, p. 152, 

 1869, nude name. 



Range. Alpine region of the Sierra Nevada, Calif., to 8,700 feet ; 

 Seattle, Spokane Falls, and Chehalis River, Wash. ; Idaho ; Vancouver 

 Island, British Columbia (Roper). 



Sphaerium (Musculium) partumeium Say. 



Cydas partumeia SAY, Journ. Acad. Nat. Sci. Phila. , n, p. 380, 1822. 

 Spharium partumeium PRIME, Mon. Am. Corbie., p. 45, fig. 42, 1865. 



Range. United States from Nebraska eastward, south to the Gulf 

 of Mexico and north to Manitoba. 



Sphaerium (Musculium) jayanum Prime. 



Cydas jay ensis PRIME, Proc. Boston Soc. Nat. Hist., iv, p. 157, 1851. 

 Sphferium jayanum PRIME, Mon. Am. Corbie., p. 46, fig. 43, 1865. 



Range. Northern United States from Iowa eastward, Canada, 

 and northward. 



FIG. 108. Spktzrium jayanum Prime. 



Lake Superior ; Fort Ellice, Manitoba ; in Alberta at McLeod, 

 Olds, Crow Lodge Creek, and Little Bow River. 



Sphaerium (Musculium) tenue Prime. Figure 109. 



Cydas tenuis PRIME, Proc. Boston Soc. Nat. Hist., p. 161, 1851. Andros- 



coggin River, Maine. 

 Sphcerium tenue PRIME, Mon. Am. Corbie., p. 47, fig. 44, 1865. 



Range. Maine, Canada, British America and northern Alaska. 



Souris River, Manitoba ; Saskatchewan River at Grand Rapids ; 

 Upper Mackenzie River at old Fort Simpson ! left bank of the Yukon, 

 thirty miles below the Xanana River mouth, Alaska ! 



Sphaerium (Musculium) transversum Say. Figure no. 



Cydas transversa SAY, New Harm. Disseminator, n, p. 356, 1829. 

 Sphcerium transversum PRIME, Mon. Am. Corbie., p. 48, fig. 45, 1865. 



Range. United States east of the Rocky Mountains and northward 

 to Canada and Manitoba. 



