136 



LAND AND FRESH WATER MOLLUSKS 



Range. — Frances Lake and Finlayson Lake, Yukon District, Liard 

 River drainage (Dawson); Lake Michigan, 12 fathoms (Walker). 



Identified by Dr. Sterki, a species related to rhotnboideum and occi- 

 dentale, but yet unfigured. 



Sphaerium solidulum Prime. 



Cyclas soUdula Prime, Proc. Boston See. Nat. Hist., iv, p. 158, 185 1. 

 Spharium solidulum Prime, Men. Am. Corbie, p. 36, fig. 27, 1865. 



Range. — Eastern United States, from New Mexico and Louisiana 

 to the Great Lakes, and Manitoba. 



In Manitoba, at Winnipeg, Brandon, and the Red River of the 

 North; in Alberta, at Egg Lake. 



Sphaerium stamineum Conrad. 



Cyclas staminea Conrad, .\m. Journ. Sci. , xxv, p. 342, 



pi. I, fig. 5, 1834. 

 Sphcerium stamineum PRICE, Men. Am. Corbie, p. 38, fig. 



30, 1865. 



Range. — Eastern United States, northward to 

 Manitoba. 



Manitoba (Hanham). 



The type locality for this species is Alabama. In 1S65 Mr. Prime 

 united with it the Cyclas fuscata of Rafinesque (Ohio) and the C. 

 bullosa Anthony from Arkansas. Later collectors have found it 

 widely distributed over the eastern portion of the continent. 



Sphaerium rhomboideum Say. 



Cyclas rhomhoida Say, Journ. Acad. Nat. Sci. Phila. , 11, p. 380, 1822. 

 Cyclas elcgans Adams, Boston Journ. Nat. Hist., in, p. 330, pi. in, fig. 11, 



1840. 

 Spharium rhomboideum Pri.me, Mon. Am. Corbie, p. 39, fig. 31, 1865. 



Fig. 100. Spkir- 

 riitm statnine- 

 um Conrad. 



loi lo- 103 



Fig. 10 1. Sphierium rhomboideum Saj. 

 Fig. 102. Spkcerium dcntatum Hald. 

 Fig. 103. Sphceriujn fabale Prime. 



Range. — New England to Michigan, and northwestward. 



Lake Superior; Manitoba at Pine Creek and in Lake Winnipeg. 



