PLATE I. 



LONUUfABmOM OKANDB,n. ep . 



Fig. 1. Right valve. 



Page. 



Fig. 

 Pig. 



2. Left valve of another Hpecimen. 



3. Anterior view of Bainn 



Blairei.i.a HKi>Ai.iKN8iJ',n. ep 7 



View of hinge line. 

 Onlside of the same flhetl. 

 Right vaive of a caet. 

 Ri^ht valve of another cast. 

 t'Hrdinal view of the same 8p6»:imen. 



Edmundia alhkksi, n. ftp 



Fig. 9. Right valve. 



Fig. 10. Left valve of another Mperimeu. 



Fig. 11 Cardinal view of >aiue. 



CU.^:N0MYA LnNUA, n. Bp. 



Fig. 1*2. Cardinal view. 

 Fig. 13. View of left valve 



M ACRODON FACETU*!, B. Sp 



Fig. 14. Cardinal view. 



Fig. 15. Right valve. 



Fig. 16. Surface of the caet. inatrnifled piix diaiuetera. 



POBinONOMTA LASAU,BNi*l8, D. Hp 



Fig. 17. Left valve. 



Fig. 18. Same magnillMd two diametere. 



li! 



