EXPLANATION OF PLATE LXI. 



CRASSATELLITES SUBPLANUS (Conrad), .p. 553 



1. The internal cast of a right valve. 



Navesink marl; near Walnford, (147*). 



2. The internal cast of a right valve. 



Red Bank sand; Red Bank, (116). 

 3-4. External and internal views of a right valve. 



Marshalltown clay-marl; near Swedesboro, (177). 



CRASSATELLITES TRANSVERSUS (Gabb), p. 555 



5. Lateral view of a left valve. 



Wenonah sand; near Marlboro, (/jo). 



CRASSATELLITES PRORUS (Conrad), p. 558 



6-7. Lateral and cardinal views of the type specimen. (After 

 Whitfield). 



Merchant-vine clay-marl ? ; Crosswicks. 



CRASSATELLITES RHOMBEA (Whitfield), p. 561 



8. Lateral view of one of the type specimens. 



Manasquan marl; New Egypt. 



CRASSATELLITES LITTORALIS (Conrad), p. 559 



9. Lateral view of one of the type specimens of Crassatella con- 



radi Whitf. 



Manasquan marl; Squankum. 



10. Lateral view of one of the specimens illustrated by Whitfield. 

 Manasquan marl; Squankum. 



CRASSATELLITES CUNEATUS (Gabb) , p. 556 



11-12. Lateral views of two internal casts. 



Merchantville clay-marl; Lenola, (163). 



SCAMBULA PERPLANA Conrad, P- 562 



13. An internal cast of a left valve. 



'Woodbury clay; Lorillard, (102). 



14. An internal cast of a left valve. 



Wenonah sand; near Marlborough, (ijo). 



1004 



