364 FOSSIL OSTREID^ OF NORTH AMERICA. 



PLATE XLIX. 



Gkypii-ea PiTCHEHl Mortou. (Page 302.) 



Figs. 1, 2. — Two views of au esaruple of typical form, natural size. 



3. — Interior view of the lower valve of a very large example. 

 5, (3. — Three views of the elongate variety to wliich Conrad gave the name G. 

 iiaria. After Roemer. 



