61 



OBSERVATIONS. 



Inhabits Flint river, Morgan county, Alabama, ad- 

 hering to stones, and is common. 



ANCULOTUS PLICATUS. 



Plate Ylll.— 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 

 greenish or blackish, with spiral bands; aperture el- 

 liptical. 



OBSERVATIONS. 



Inhabits tributaries of the Tennessee river in Ala- 

 bama, adhering to stones. 



ANCULOTUS MONODONTOIDES. 

 Plate VIII.— Fz"^. 16. 



DESCRIPTION. 



Shell subglobose, body whorl ventricosc, not ab- 

 ruptly rounded above; apex eroded; columella with a 

 p 



