EXPLANATION OF PLATE LX. 



AMBOCARDIA COOKII Whitfield, p. 548 



1-2. Lateral and anterior views of the type specimen. 

 Raritan clay. 



ASTARTE VETA Conrad, p. 549 



3. View of the type specimen. (After Whitfield.) 



Raritan clay; Washington. 



ERIPHYLA CONRADI (Whitfield), p. 550 



4. A squeeze from a natural mould of the exterior. 



Merchantville clay-marl; near Jamesburg, (141). 



5. The internal cast of a left valve, (x2). 



Merchantville clay-marl; near Jamesburg, (140). 

 6-8. External and internal views of a left valve and internal view 

 of a right valve, (x3). (The type specimens, after Whit- 

 field.) 



Woodbury clay; Haddonfield, (183). 



ERIPHYLA DECEMNARIA (Conrad) , p. 551 



9. Lateral view of the type specimen. (After Whitfield.) 

 Woodbury clay; Haddonfield, 



ERIPHYLA DECUVIS (Conrad), p. 551 



10. View of the type specimen, (x2). (After Whitfield.) 



Woodbury clay; Haddonfield, (183). 



ERIPHYLA PARIUS (Conrad), p. 552 



11. View of the type specimen. (After Whitfield.) 



Horizon and locality not knozvn. 



