131 
TURBO moniiiforus. 
TAB. CCC XCY.—fig. 1. 
Spec. Char. Short, conical, transversely 
striated, umbilicated ; whorls separated 
•above by a canal, their edges granulated; 
umbilicus large, wrinkled. 
The length and breadth of this shell, are nearly equal ; 
the base is rather conical ; the stride are prominent, 
simple upon the base, but granulated and less numerous 
upon the spire ; the umbilicus is granulated within, the 
edge of it is undulated. 
The large umbilicus would induce us to place this 
species under the Genus Delphinula, were the lips of 
the aperture separated from the preceding whorl : it is 
found replaced hy Calcedony, in the Greensand of 
Blackdown in Wiltshire. 
