*& 



EXPLANATION OF PLATE LXIII. 



TENEA PARIUS Conrad, P- 572 



1-2. The internal cast of a left valve and a plaster cast from the 



natural mould of the exterior of the same. 

 3. The internal cast of a more ovate left valve. 



Woodbury clay; Lorillard, (102*). 

 4-5. Lateral and anterior views of an internal cast. 

 Navesink marl. 



6. Lateral view of a small internal cast of a left valve. 



Red Bank sand; Shrewsbury River (119). 



TENEA PINGUIS Conrad, P- 574 



7. Lateral view of an internal cast, (x2). 



Navesink marl, near Walnford (148'). 



CARDIUM NUCLEOI.US (Whitfield), p. 575 



8-9. Lateral and cardinal view of the type specimen, (x2). 

 (After Whitfield.) 



Manasquan marl; Farmingdale. 



CARDIUM WENONAH n. sp., p. 576 



10. Lateral view of a right valve. 



11-12. Lateral and posterior views of a complete specimen. 

 13. Interior of a right valve. 



Corsicana, Texas, U. S. Nat. Mus. Coll. No. 201927. 

 14-16. Lateral views of the internal casts of three right valves. 

 Wenonah sand; near Marlboro, (150). 



CARDIUM EUFAULENSIS Conrad, p. 577 



17-18. External and internal views of a left valve. 



Union Co. Miss., U. S. Nat. Mus. Coll. No. 20,847. 



19. The internal cast of a right valve. 



20. Squeeze taken from a natural mould of the exterior. 



Wenonah sand; near Crawfords Corner, (126*). 



CARDIUM LONGSTREETI n. sp., p. 579 



21. The internal cast of a left valve. 



22. Squeeze taken from the natural mould of the exterior of the 



same. 



Wenonah sand; near Crawfords Corner, (126*}. 



1008- 



