114 

 GRYPHiEA nana. 



TAB. CCCLXXXIIL— 1^2^. 3. 



Spec. Char. Oblong ovate, rugged, gibbose, 

 beak oblique, incurved; upper valve pointed, 

 thick. 



Ps OT much exceeding in size a common hazel nut ; it is 

 very variable in form, but always curved and longer than 

 wide ; its surface of attachment is sometimes very large, 

 the hinge pit is narrow and much curved, as in the last 

 species. 



Very abundant in some parts of the Clay at Shotover, 

 near Oxford, accompanied by Ostrea Delta, a Trigonia, 

 and many other shells ; it is probably characteristic of 

 the stratum. 



