57 



MELANIA VESTITA. 

 Plate VIII.— M". 12. 



DESCRIPTION. 



Sliell subulate, subturreted; volutions nine; each 

 iuigulated below the middle; suture deeply impress- 

 ed; epidermis smooth, polished, horn coloured, with 

 a dark band revolving below the angle of each whorl; 

 whorls near the apex acutely carinated. 



OBSERVATIONS. 



Inhabits small streams in Greene county, Alabama, 

 among the grass which grows on the rocks. The 

 shell is always coated with a deposite, which obscures 



its characters. 



ANCYLUS FILOSUS. 



DESCRIPTION. 



Shell regularly oval, rather elevated; with nume- 

 rous radiating prominent lines; apex very prominent, 

 inclined, eroded, not nearly central. 



OBSERVATIONS. 



Inhabits the Black Warrior river, south of Blount's 

 Springs, Alabama. It is abundant on various species 

 oi^Melania. 



