3Y0 



Notice of Land and Freshwater Shells. 



The following fresh water species, as determined with the 

 assistance of Messrs. Lea, Binnej, and Prime, were also collected 

 in the mountains by Dr. Cooper : 



Melania plicifera Lea 



Liransea fragilis L. 



■ humilis Say 



Physa hypnornm L, 



heterostropha Say 



Pianorbis trivolvis Say 



parvus Say ? 



Sphserium occidentale Prime ^ 

 Limn sea fragilis L. "] 



- Hell Gate Eiver. 



bulimoides L. 



desidiosa S. 



y 



Missouri River above the 

 Falls. 



Physa heterostropha S. j 



Sph^erium striatinum Lam J 



Leptoxis. 



Amnicola. 



Ancylus. 



Unio Inteolns Lam. 



Margaritana margaritifera L. 



This latter was found in the " Missouri River above the Falls, 

 and also in the SjDokan River below Lake Coeur d'Alene." It 

 is the purple variety, hitherto only brought from the Pacific 

 coast. 



