68 AMERICAN JOURNAL 



The recent species of this genus are Marginella roscicla, Red* 

 field (S. Car.), of Section II, and M. smcinea, Conrad (Tampa 

 Bay), of Section I. 



TEREBRA, Adanson. 



Subgenus SUBULA, Schumacker. 



T. simplex, Conrad. PL 5, fig. 5. 



Description. Subulate ; volutions 10 to 12, sides nearly 

 straight, slightly depressed above the middle ; on the whorls 

 towards the apex this depression is more like an impressed line 

 near the suture ; lines of growth distinct and curved ; body 

 whorl rather abruptly rounded at base. 



Terebra simplex, Conrad, Journ. Acad. Nat. Sci., vol. vi, p, 

 226, pi. 9, fig. 22. 



Locality. .—St. Mary's River, Md. 



This species most nearly resembles Terebra fat aJa of the recent 

 forms, a West Indian shell. The subgenus Subula is not found 

 among living shells on the Atlantic coast of North America, 



