[29] 



32. Succinea aurea, Lea. 



Plate 3, figure 33. 



Very small, elongated oval, very tbin, transparent ; spire 

 short ; wtorls 3, a little tabulated posteriorly, suture deeply 

 impressed ; aperture narrow-ovate, acutely angled above ; co- 

 lumella slightly folded. Amber color. 



Length 8, diam. 4 mill. 



Ohio, Niagara Falls. 



Same size as S. avara, Say, but narrower, more polished and 

 pellucid, and darker color. 



83. Succinea Haleana, Lea. 



Plate 2, figure 34. 

 Oval, rdinutely striate ; whorls 2 J, apex mamillary, suture 

 deeply impressed ; body whorl a little flattened around the 

 superior part ; aperture widely oval, angled above, columella 

 medially folded, with a slight deposit of callus. Light honey 

 yellow. 



Length 5, diam. 3 mill. 



Alexandria, La. ' 



Very close to avara; the whorls are not so convex, nor the 

 spire so prominent, and the body is proportionally longer. 

 Avara does not extend nearly so far southward. 



* * 



Mexican Species. 

 34. Succinea cingulata, Forbes. 



Plate 2, figure 35. 



Oblong-ovate, slightly oblique, striate, shining; spire well 

 developed, suture impressed ; whorls 4; aperture large, oval, 

 columella at the base receding to the left. Brownish-yellow, 

 with oljsolete spiral white lines. 



Length 12, diam. 6 mill. 



Mazatlan ? 



