POST-PLEIOCENE FOSSILS, 



SOUTH-CAROLINA. 



PLATE IV. 



ARCADE. 



Fig. 1. ARCA INCONGRUA. Page 19. 

 " la. View of hinge and beaks. 



2. ARCA AMERICANA. Page 19. 

 " 2a. End view. 



3. ARCA LIENOSA. Page 20. 

 " 3a. View of binge. 



4. ARCA PONDEROSA. Page 21. 

 " 4a. View of binge. 



5. ARCA TRANSVERSA. Page 21. 

 " 5a. View of binge. 



6. ARCA C/ELATA. Page 22. 

 " 6a. View of hinge. 



