
61 
OBSERVATIONS. Z 
~ [nhabits Flint river, Morgan county, Alabama, ad- 
hering to stones, and is common. 
ANCULOTUS PLICATUS. 
Pirate VUII—Fig, 18. 
DESCRIPTION. 
Shell suboval, with a short spire, only one whorl! 
of which is entire, rounded; body whorl slightly ven- 
tricose, with oblique plaits or lines, which are crenu- 
lated on the margins of a slight spiral groove near 
the suture; lines of growth prominent; epidermis 
ereenish or blackish, with spiral bands; aperture el- 
liptical. , 
OBSERVATIONS. 
Inhabits tributaries of the Tennessee river in Ala- 
bama, adhering to stones. 
ANCULOTUS MONODONTOIDES. 
Puts VIIL—Fig. 16. 
DESCRIPTION. 
Shell subglobose, body whorl ventricose, not ab- 
ruptly rounded above; apex eroded; columella with a 
F : 

