91 



is Ostrea gallus, Valenc. 

 Ostrea radiata, Valenc. 



Ostrea arborea, Dillw. 

 Ostrea plicatula, Gmel. 

 is Ostrea plicata, Chemn. 

 is Ostrea orientalis, Chemn. 



is Ostrea frons, Linn, 

 is Ostrea fusca, Lam. 



Ostrea Virginiana, List. 



fossil, 

 fossil, 

 fossil, 

 fossil, 

 fossil. 



