62 
large pyramidal tooth at the base; epidermis horn 
coloured, with obscure bands; aperture effuse. 
OBSERVATIONS. 
Inhabits streams in Virginia. Mr. Hype. 
I received a specimen of this curious species from 
Professor Green of Jefferson College. 
ANCULOTUS PICTUS. 
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. pl. i. 15. 
4 
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; 

