BULLBTIN 9 380 



ExPIvANATION OF PlATE 7. 

 (13) 



Page. 



Fig. I. Pseudamussium claibornense Q,on 43, 235 



2. Amiissium sqiiaimdum L,am 44, 236 



2a. The same, exterior. 



3. Another specimen showing fine radiate lines. 



4. Chlajnys g7'-eggi n.. s^. Left valve 45, 237 



5. Right valve of the same. 



6. Chlaniys chodaveitsis K\di 46, 238 



7. Avicula sp " " 



7a. The same, exterior. 



8. Pinna sp " " 



9. Modiola alabamensis Aid 47 , 239 



10. Area hatchetigbeensis n. s^ " 



loa. , The same, exterior. 



Engraved by the Electro Light Engrav- 

 ing Company, New York. 



