186 CONTRIBUTIONS TO GEOLOGY. 



M. Jllabamiensis. Plate 6. Fig. 201. 



Description. Shell ovate, smooth ; substance of the shell 

 rather thick ; spire rather elevated ; whorls slightly in- 

 curved above ; columella furnished with a large oblique 

 fold ; mouth narrow, subovate, emarginate at base ; outer 

 lip sharp, within having one or two longitudinal folds. 



Length .4, Breadth 3-20ths, of an inch. 



Observations. Unfortunately, but two specimens of this 

 species were obtained, neither of which is entirely per- 

 fect. The fold is situated about the middle of the colu- 

 mella, and is very large. One of the specimens has but one 

 longitudinal fold within the lip, while the other has two. 

 The sutures are filled up by the incrusted deposit which 

 extends to the top of the spire. 



GENUS CONUS. Linnaus. 



C. Claibornensis. 



Description. A small cone, for which I had proposed this 

 name, was found in the sand, and by accident was mislaid, 

 before the description and figure were made. It was about 

 one quarter of an inch long, flattened on the sides, cari- 

 nate above, and canaliculate on the superior part of the 

 whorls ; the spire was rather low and pointed. It is to be 

 regretted that any accident should have happened to it, 

 as it is the only specimen of a cone found at this locality, 

 to my knowledge. 



