SYNONYM. 



LiMNECs ELODES. Nob. Joum. Acad. Nat. Se. vol. ii. 

 p. 169. 



L. PALUSTRIS L. ? 



OBSERVATIONS. 



I am indebted to Mr. A. Jessup for this species, who 

 iound it in Canadaigua lake, State of New York. Mr S- 

 B. Collins subsequently sent me specimens which he ob- 

 tained in a marsh near the Saratoga springs. It bears the 

 most striking resemblance to L. paluitris, L. of Europe 

 and I am almost inclined to think it a mere variety of that 

 species. The fold of the columella is much more pro- 

 iound than that of umbrosus. 



REFERENCE TO THE PLATE. 



Fig. 3, Two views ; natural size. 

 PI. 31. 



