336 FOSSIL OSTREID^ OF NORTH AMERICA. 



PLATE XXXV. 



GRYPU.EA CALCEOLA var. NEBRASCENSIS Meek & Hayden. (Page 290.) 



Fig. 1. — Exterior view of a lower valve ; natural size. 

 2. — Lateral view of another lower valve. 

 ."?. — Interior view of tlie same example. 

 4. — Upper view of a small example. 

 5. — Interior view of an upper valve. After Meek. 



OsTREA (Alectryonia) procumbens White. (Page 290.) 



6. — Interior view of a lower valve ; natural size. 

 7. — Later.al view of the same specimen. 

 8. — Interior view of an upper valve. 



Ostrea strigilecula White. (Page 289.1 



9. — Exterior view of a lower valve ; natural size. 

 10. — Lateral view of the same specimen. 

 11. — Interior view of an upper valve. 



