Notice of Land and Freshwater Shells. 



The following fresh water species, as determined with the 

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

 in the mountains by Dr. Cooper: 



Melania plicifera Lea "1 



Limn sea fragilis L. 



humilis Say 



Physa hypnonim L. 



heterostropha Say 



Planorbis trivolvis Say 



parvus Say ? 



Sphserium occidentale Prime 

 Limn sea fragilis L. 



bulimoides L. 



desidic^sa S. Y 



^ Hell Gate Kiver, 



Missouri River above the 

 Falls. 



Physa heterostropha S. | 



Sphserium striatinum Lam J 



Leptoxis. 



Amnicola. 



Ancylus. 



Unio luteolus Lam. 



Margarirana margaritifera L. 



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

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

 is the purple variety, hitherto only brought from the Pacific 

 coast. 



