6 
ORBICULA granulata. 
TAB. mi.— jigs. 3 and 4. 
Spec. Char. Conical, orbicular, marked with gra- 
nulated radii ; apex elevated. 
A more elevated and regular cone than even the last : 
but the sides are rather rounded ; the diverging lines 
are elevated, and rendered granular by the lines of 
growth. We have not seen the other valve. 
This shell had passed for a Patella, but its orbicular 
form gave rise to some doubts : and we now venture to 
place it under the genus Orbicula, in consequence of 
its strong resemblance to the last species. 
From the Ancliffe Oolite in the collection of the Rev. 
G. Cookson. 
Fig. 4 is an enlarged view. 
