PLATE IX. 



10. 



I. Hinge of Chama. 



2* Chama Hippopus 



3. Chama Cor . . 



4. Hinge of Area. 



5. Area Vndata . . 



6. Area JYbce . . 



7. Ostrea Violacea . 



8. Ostrea Malleus . 



9. Anomia Psittacea 



. Bear's Paw Clam. 

 . Heart Clam. 



Lettered Ark. 

 . Noah's Ark. 

 . Violet Scallop. 

 . Hammer Oyster. 



( Parrot Beak 

 " ( Anomia. 



