* 



? EXPLANATION OF PLATE LXXV. 



DENTALIUM SUBARCUATUM Conrad, ................................... p. 661 



1. View of a squeeze from a natural mould of the exterior. 



2. View of an internal cast. 



Woodbury clay; Lorillard , (102). 



CADULUS OBNUTUS (Conrad), ....................................... p. 663 



3-4. Lateral views from different sides of two internal casts, 



(X2). 



Woodbury clay; Lorillard, (102). 



PATELLA TENTORIUM Morton, ......................................... p. 663 



5-6. Lateral and vertical views of the type specimen, (xa). 

 Navesink marl; near Arneytown. 



PLEUROTOMARIA CROTALOIDES (Morton), ............................... p. 665 



7-9. Vertical, basal and lateral views of an internal cast. 



Nave sink marl; near Crawfords Corner, (126'). 



PLEUROTOMARIA BRITTONI Whitfield, ................................... p. 667 



10-12. Lateral, vertical and basal views of the type specimen. 

 Manasquan marl; Farmingdale. 



PLEUROTREM A SOLARIFORMIS Whitfield, ................................ p. 667 



13-14. Lateral and basal views of one of Whitfield's type specimens. 

 Vincentown limcsand; Timber Creek. 



LEIOSTRACA CRETACEA (Conrad) , ...................................... p. 671 



15. Lateral view of a specimen (x4). 



16. Lateral view of a specimen (x4). 



17. Lateral view of a specimen (x3). 



Woodbury clay; Haddonfield, (183). 



DELPHINULA NAVESINKENSIS n. sp., ................................... p. 669 



18-19. Vertical and lateral views of the type specimen. 

 Navesink marl; near Walnford, (49). 



MARGARITA ABYSSINA (Gabb), ........................................ p. 669 



20-21. Basal and lateral views of an internal cast. 



Merchantvillc clay-marl; Lenola, (163). 

 22. Lateral view of an internal cast. 



Navesink marl; Middletown, (113). 



1034 



