LIMNiEA. 



Typical Species. 



1. LIMN^A COLUMELLA, Say. 



Hald., p. 38, 1. 12, figs, 8—15. 



Plate 16, fig. 1. 



To this species is to be added Dr. Lea's re- 

 cently described Succinea pelliicida (which I 

 figure), and the following I exclude from it : 



2. LIMN^A MACROSTOMA, Say. 



Hald., p. 38, t. 12, figs. 1—7. 



Plate 16, fig. 2. 



The differences mentioned by Haldeman 

 appear to me to be permanent. Not only are 

 they apparently constant in specimens collected 

 in the vicinity of Philadelphia, but there are 

 even greater differences in the southern speci- 

 mens. I figure L. macrostoma from Charleston, 



S. C. 



(62) 



