88 LIMNZA. 
Typical Species. 
1. LIMNAZA COLUMELLA, Say. 
Hald., p. 38, t. 12, figs, 8—15. 
Plate 16, fig. 1. 
To this species is to be added Dr. Lea’s re- 
cently described Succinea pellucida (which I 
figure), and the following I exclude from it: ° 
2. LIMNAZA 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, 
Gs 
(62) 
