OF THE SOUTHERN ATLANTIC STATES. 109 



" C. Carolinends. Subulate ; whirls with impressed spiral lines and 

 numerous acute longitudinal ribs, which are dislocated by a sulcus 

 below the suture. Length two and a quarter inches. Resembles 



C. dislocatum, but is far larger, and has much more numerous and 

 less prominent ribs. 



MITRA. 



-Mitra CaroUnensis. Plate V, fig. 5. For description, see Silli- 

 mau's Journal, volume xxxix, p. 387, where it is inadvertently 

 described as a Voliita. 



CYPU.EA. 



• Cijproia CaroUnensis. Plate V, fig. 6. Ovate, ventricose, superior 

 margin of the labrum prominent at the apex; base plano-convex. 



FASCIOLARIA. 



"" Fasciolaria omitahilis. Plate V, fig. 7. For description, see Jour- 

 nal Acad. Nat. Sciences, volume vii. p. 135. 



DISPOTCEA. 



- Dispotcea multilineata. Plate V, fig. 8. Subovate, depressed ; 

 apex prominent : one side with squamose lines, the opposite with 

 finer ramose lines destitute of scales ; diaphragm contracted. 

 ^ D. dumosa. Plate V, fig. 9. Elevated, with ramose radiating 

 lines and obsolete ribs, and with erect tubular spines ; apex minutely 

 spiral. 



CASSIS. 



^ Cassis Hodgii. Plate V, fig. 10. EUiptical, with numerous spiral 

 lines, most prominent towards the base ; spire conical, volutions 

 convex. 



PECTUNCULUS. 



~ Pectunculus quinquerugatus. Lentiform, with very fine, crowded 

 longitudinal strife, and convex, slightly raised ribs ; behind the umbo 

 are five or six recurved plicae or undulations. Length, three and 

 three eighths inches. 



~' P. CaroUnensis. Lentiform, thick, posteriorly subcuneiform ; ribs 

 obsolete, radiating strias strongly marked, minutely granulated ; car- 

 dinal plate broad and thick ; teeth obsolete ; inner margin with 

 numerous crenulations. Length, one and three eighths inches. 



P. aratus. Obovate, with about twenty-eight ribs, about as wide 

 as the intervening spaces, crossed by wi'inkled lines ; posterior margin 

 obliquely truncated above the extremity, which is angulated ; margin 

 with about fifteen wide crenulations. Closely allied to P. pectinatiis. 



