PLATE II. 



Page. 

 AsTARTE VETA Courad 23 



Fig. 1. Copy of Mr. Conrad's figure from the Am. Jonr. Conch. 

 CoRBicuLA ANNOSA Conrad's sp 26 



Fig. 2. Left side of a specimen from Sayers & Fisher's clay bank. 



3. Left view of a larger sj)ecimen showing the form mor'^ 'distinctly. 



4. Antero-cardinal view of the same. 



CoRBicuLA EMACERATA Whitfield 26 



Fig. 5. Left view of the most perfect specimen seen. 

 6. Cardinal view of the same. 



Gnathodon tenuidens Whitfield 27 



Fig. 7. Right view of a very complete specimen showing the general form, and also marks 

 of a lateral tooth, 

 8. Posterior view of the same. 

 9 and 10. Views of a smaller specimen. 



Ambonicardia Cookii Whitfield 25 



Fig. 11. Left side of a large specimen. 



12. Cardinal view of another individual. 



13. Anterior view of the specimen fig. 12. 



14. Anterior profile view of a partial cast showing the evidence of a tooth in the left 



valve and a part of the pallial line on the right. 



273 



