[18] 



f Spire short, body ivhorl very large, inflated, well rounded. 



1. Succinea Totteniana, Lea. 



Plate 2, figure 1. 



Obliquely ovate, tliin, transparent, obsblctelj striate, shin- 

 ing; spire very short, of scarcely three whorls; body whorl 

 nine-tenths of the total length and inflated oval ; aperture oval 

 obtusely angulate above, three-fourths the total length, peris- 

 tome well rounded. 



Length 16, diam. 9 mill. ToU-^/T. a JvT . -"Mame^. 



New England and Eastern New York. 



.2. Succinea inflata, Lea. 



Plate 3, figure 3. » 



Inflated, oval, thin, spire very short, apex sub-acute, suture 

 impressed ; whorls 3, those of the spire not very convex ; body 

 short-oval, seven-eighths the total length ; aperture widely 

 ovate. Chalky white, spire inclining to brown, aperture with- 

 in tinged with light yellow. 



Length 12, diam. 8 mill. Co'21 . "W. (? .JVI . _ Civ^vU^ Un, S .d. 



South Carolina and Georgia. 



Is of heavier texture and difi:erent color from S. Totteniana. 

 Mr. W. G. Binney considers this species doubtfully distinct 

 from S. Campestris, I think it is well distinguished. 



8. Succinea unicolor, Tryon. (Nov. spec.) 



Plate 3, figure 3. 



Oval, inflated, very thin, translucent, finely striate; spire 

 very short, apex acute, suture moderately impressed; whorls 

 3, the last very large ; aperture short-ovate, outer lip somewhat 

 expanded. Light corneous. 



Length 8, diam. 6 mill. 



New Orleans, La. 



This shell, mentioned by Pfeiffer as a variety, appears to 

 me to be specifically distinct. Specimens exist in the magni- 

 ficent collection of the Academy of Natural Sciences of Phila- 

 delphia, and for others I am indebted to Mr. Thomas Bland, 

 of New York. 



