62 



large pyramidal tooth at the base; epidermis horn 

 coloured, with obscure bands; aperture effuse. 



OBSERV ATI ON 3. 



Inhabits streams in Virginia. Mr. Hyde. 



I received a, specimen of this curious species from 

 Professor Green of Jefferson College. 



ANCULOTUS P ICTUS. 



DESCRIPTION. 



Shell oval; spire short, convex; apex eroded; body 

 whorl slightly compressed in the middle; epidermis 

 horn-coloured, with numerous series of small angu- 

 lar spots; spots distinct within on the labrum; aper- 

 ture obovate, base regularly rounded. Length five- 

 eighths of an inch. 



Anculosa picta, nob. Silliman's Journal, vol. ii. 

 p. 342. pi. i. 15. 



OBSERVATIONS. 



Inhabits pebbles on the bars in the Alabama river, 

 near Claiborne. 



ANCULOTUS PUMILUS. 



DESCRIPTION. 



Shell very small, obliquely oval, blackish; spire 

 consisting of one entire convex whorl; apex eroded; 



