64 
ANCULOTUS MELANOIDES. 
Plate VIII. —Fig. 19. 
DESC RIPTION . 
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 shell* 
Length half an inch. 
OBSERVATIONS. 
Inhabits rivers in North Alabama, 
ANCULOTUS NIGRESCENT 
Plate VIII. — 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, 
