64 



ANCULOTUS MELANOIDES. 



Platk Ylll.—rig. 19. 



DESCRIPTION. 



Shell conical, with three entire volutions; apex 

 eroded; whorls flattened, rounded only at the sutures; 

 lines of growth prominent; body whorl abruptly 

 rounded; epidermis blackish, obscurely banded; aper- 

 ture elliptical, about half the length of the ghell. 

 Length half an inch. 



OBSERVATIONS. 



Inhabits rivers in North Alabama. 



ANCULOTUS NIGRESCENS. 

 Pirate YIU.—Fig. 17. 



DESCRIPTION. 



Shell subconical, truncated or much eroded at the 

 apex; superior whorl hardly convex; body whorl elon- 

 gated, contracted above on the labrum; columella flat- 

 tened, obtusely rounded at the base; aperture ob- 

 ovate, rather more than half the length of the shell; 

 epidermis blackish; within dark purple. 



I am indebted to Mr. Hyde for this shell; he in- 

 forms me it inhabits rivers in Maryland. 



