The Land and Freshwater Shells of Alberta. 



177 



mentioned above, is added on the authority of Dr. Dawson although it 

 has not occurred in any of the collections I have examined. 



List of the land and freshwater Shells of the District of 



Alberta. 



Land Shclls 





9 



10 



ii 



12 



13 

 14 



15 

 16 



17 

 iS 



19 



20 

 21 



Lima x hyperboreus, 



West 



Vitrina limpida, Gould 

 Hyalina arhorea,Say sp 

 Ilyalina radiatula, 



Alder, sp 



Conulus fulvus,Drap.sp 

 Patula strigosa, Gould 



SP 



Patula striatella 



Anthony sp 



Vallonia pulchella 

 Muellersp. form graci 



licosta, Reinh 



Pupa Hoppii, Mueller 

 Pupa Blandi, Morse, . 

 Pupa armifera, Say . . 

 Pupa Holzingeri,Sterk 

 Pupa pentodon, Say sp 

 Pupa simplex, Gould 

 Pupa alticola, Ingersoll 

 Vertigo ovata, Say .... 

 Vertigo ventricosa, 



Morse 



Ferussacia subcylin- 



drica. Linn, sp . . . . 

 Succinea avara, Say. 

 Succinea ovalis, Gould 

 Succinea Grosvenori 



Lea 



FRESHWATER SHELLS. 



22 Valvata sincera, Say. . 



23 Valvata tricarinata, Say 



24 Limnseastngnalis.Linn, 



?P . 



25 Limnaea reflexa, Say . . 



26 Limna;apalustris, Muel- 



ler, sp 



27 Limnceabulimoides Lea 



28 Limnaea desidiosa, Say 



29 Limnaea caperata, Say 



30 Thysa heterostropha 



Say 



0*3 - 



pq 



x 



X 

 X 



X 

 X 







X 

 X 

 X 



X 



X 

 X 



O CO 



CO 



Remarks. 



Waterton Lake 



