63 



body whorl re.^ularly convex; base with a groove be- 

 hind the columeUa; aperture suborbicular, patulous. 



OBSERVATIONS. 



Inhabits the Black Warrior river and Bayou Teche; 

 the latter locality was communicated by Professor 

 Green, who supphed me with a specimen. 



ANCULOTUS TiENIATUS. 



DESCRIPTION. 



Shell oval, or oblong; olivaceous, with dark green 

 spiral bands, four on the body whorl; one whorl of the 

 spire not eroded, often longitudinally produced. 

 Length three-fourths of an inch. 



OBSERVATIONS. 



*Inhabits the friable calcareous banks of the Ala- 

 bama river, at Claiborne. It is a pretty species, re- 

 markable for its dark bands, which resemble those 

 o'i Melania olivula, nob. of the same locality. 



* 111 my observations on the habits of this shell, I inad- 

 vertently stated that it was exclusively devoted to calca- 

 reous banks. I found them also on a siliceous breccia, 

 n^ar Claiborne. 



