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DESCRIPTIONS OF THE BOGNOR FOSSILS. 
Pholadomya virgulosa. (Tab. XIV. fig. 31.) 
A very characteristic shell of this part of the London clay. 
Cyprina planata. (Tab. XIV. fig. 11.) 
The individuals found at Bognor are all smaller than those of Nuneham. 
Cyprina? nana. (Tab. XIV. fig. 8.) 
Spec. Cuar.—Shell broadly oval, transverse, regularly convex, polished ; 
beaks prominent, anterior ; lunette not sunk, inconspicuous ; hinge-slope pro- 
minent, curved ; lines of growth numerous, fine, sharp. 
A more regularly oval shell than C. planata, which it otherwise much resembles ; 
it is also much smaller. Not having seen the hinge, I am doubtful of the genus. 
In large groups. 
Cardita Brongniartii. (Tab. XIV. fig. 33.) 
A handsome shell only known at Bognor ; it was first noticed by Dr. Mantell, 
but is not uncommon. 
Cardita quadrata. (Tab. XIV. fig. 12.) 
Spsc. Cuar.—Shell transverse, imperfectly rectangular, rather convex, 
ribbed ; ribs numerous (above twenty), furnished with obtuse scales ; beaks 
small, near the anterior extremity ; lunette nearly flat; length two-thirds the 
width. 
The small ribs and general form mark this as distinct from any other Cardita 
I know. It occurs assembled in great numbers in blocks of sandy stone. 
I have resumed the generic name Cardita, as it appears to have the priority 
over Venericardia. 
Pectunculus brevirostris. (Tab. XIV. fig. 32.) 
As the surface of this shell in the Bognor rock is always in a different state 
from the French specimens of P. pulvinatus, I cannot with confidence refer it to 
that species, which besides appears to be less convex. 
Modiola simplex. (Tab. XIV. fig. 16.) 
Spec. Cuar.—Shell lanceolate, compressed, smooth ; anterior extremity very 
small, rounded; beak near the anterior extremity ; lobe indistinct ; hinge-line 
