PLATE II. 



AsTAKTE VETA Couratl 



Fig. 1. Copy of Mr. Courad's figure from the Am. Jour. Conch. 



CoRBicuLA ANNOSA ConracVs sp 



Fig. 2. Left aide of a specimen from Sayers & Fisher'a clay hauk. 



3. Left view of a larger specimen showing the form more distinctly. 



4. Antero-cardinal view of the same. 



CORBICUI/A EMACERATA Whitfield 



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

 6. Cardinal view of the same. 



Gnathodon tenuidens Whitfield 



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 



Fig. 11. Left side of a large specimen. 



12. Cardinal view of another individual. 



13. Anterior view of the specimen fig. 13. 



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. 



272 



