OF CONCHOLOGY. 145 



CANCELLARIA, Lam. 



C. LiEATA, nob. — pi. 11, fig. 8. 



Descrqition, — Fusiform, volutions five, angular at tlie summit ; 

 spire scalariform ; ribs longitudinal, compressed and a(?ute; sum- 

 mit or upper area of body whorl slightly concave, and the 

 ribs prominent or snbspiniform at the angle ; a few distant ob- 

 solete revolving lines towards the base ; umbilicus small, pro- 

 found. 



Length, ^ inch. 



This small species (enlarged in the figure) is probably from 

 Texas. 



C. IMPRESSA, nob.— pL 11, fig. 16. 



Description. — Elongated, acutely ovate, volutions seven, angu- 

 lar, and flattened above; ribs longitudinal, acute, subspiniform 

 at the summit angle ; body whorl slightly carinated at the 

 angle, with only one or two ribs ; umbilicus wide, carinated 

 on the margin; labrum finely striate within; labium reflexed; 

 base subacute. 



Locality. — Claiborne, Alabama. 

 C. TORTIPLICA, nob. 



Description. — Subfusiform, with longitudinal narrow ribs 

 and a few thick varices ; volutions six, those of the spire con- 

 vex; regular, prominent revolving lines, six in number, on the 

 penultimate volution, eighteen or nineteen on the body whorl, 

 fine, and crowded near the suture and base; labrum striate 

 within ; columella with three sinuous plaits, the upper one lar^i-e 

 and thick. 



Length f inch. 



Locality. — Texas. 



TORNATELLiEA, Conrad. 

 T. LATA, nob. 



Description. — Subglobose, with numerous revolving lines ; 

 spire short, acute; aperture patulous; columella with two dis- 

 tant plaits. 



Actseon latus, Conrad, Eocene Catalogue, p. 3-1. 

 Locality. — Alabama. 



CORBULA, Lam. 



C. FiLOSA, nob. 



Description. — Subtriangular, equilateral, length and heio-ht 

 nearly equal ; disk concentrically ribbed ; ribs imbricated ; 

 posterior slope indented ; extremity truncated. 



Length \ inch. 



Locality. — Vicksburg, Miss. 



