102 ON THE LAND AND FRESH-WATER 



Valvata tricarinata, Say. Also abundant. At Quebec the 

 species generally occurs large, with the carinse sometimes almost 

 obsolete. 



Valvata sincera, Say. Marl lake, Anticosti : R. B. 



Valvata humeralis, Say. Tbis species, so closely allied to the 

 depressed form of the V. piscinalis of Europe, has been taken by 

 Mr. Bell at the following localities : Matanne ; small lake at the 

 head of Awaganasees brook, and Little Lake Matapedia. 



Amnicola porata, Say. Lake Calvaire, near Quebec : J. F. W. 

 Little Lake Matapedia : R. B. Near Montreal : R. J. F. 



Amnicola tenuipes, Haldeman. St. Lawrence, near Quebec : 

 burrowing in the sand between tide-marks : J. F. W. 



MELANIADJE. 



Melania subularis, Lea. (M. acuta, Lea.) St. Lawrence at 

 Montreal. 



Melania Niagaren&is, Lea. St. Lawrence, from Quebec to 

 Montreal. At Quebec I obtained only the pale yellowish, unband- 

 ed variety. 



GASTEROPODA,— PTJLMONIBRANCHIATA. 



LIMN^EIDiE. 



Limnoea stagnalis, Linnaeus. (L. jugularis, Say.) Common at 

 Montreal in the St. Lawrence, but rare at Quebec. Metis lakes, 

 and lakes on the Rimouski river : R. B. Probably of wide dis- 

 tribution in Canada East. 



Limnoea megasoma, Say. Veryjfineat Nuns' Island,near Montreal : 

 M. de V., and R. J. F. Hawkesbury village: R. B. 



Limnoea ampla, Mighels. This fine species was first detected 

 in Lower Canada by R. J. F. at Brome Lake. 



Limnoea decollata, Mighels. Great Lake Matapedia, and Rimous- 

 ki village : R. B. 



Limnoea columella, Say. St. Lawrence at Quebec, adhering to 

 stones at low water-mark : J. F. W. The var. macrostoma occurs 

 with the type. 



Limnoea reflexa, Say. Upper Metis Lake : R. B. Near Gren- 

 ville village : W. D. 



Limnoea umbrosa, Say. Point Levis : J. F. W. Montreal 



