PLATE XXXV 



PAGE 



Pigs. 1, 2. ANOMIA ARGENTARIA Morton 608 



1. Exterior of left valve. X 2. 



2. Interior of right valve. X 2. 



Monmouth formation, Brightseat, Prince George's County. 



Figs. 3, 4. ANOMIA TEIAIXOIDES Morton 610 



3. Exterior of right valve. 



4. Interior of same. 



Monmouth formation, Briar Point, Chesapeake and Delaware 

 Canal, Delaware. 



Figs. 5, 6. ANOMIA OBNATA Gabb 612 



5. Interior of left valve. X 2. 



6. Exterior of same. X 2. 



Monmouth formation, 1 mile west of Friendly, Prince George's 

 County. 



Figs. 7-10. ANOMIA FORTEPLICATA Gardner n. sp 613 



7. Exterior of left valve. X 1%. 



8. Interior of left valve. X 3. 



Monmouth formation, 1 mile west of Friendly, Prince George's 

 County. 



9. Exterior of left valve. X 2. 

 10. Interior of same. X 2. 



Monmouth formation, McNeys Corners, Prince George's 

 County. 



Figs. 11, 12. PARANOMIA LINEATA Conrad 606 



11. Exterior of left valve. 



12. Exterior of another left valve. 



Ripley formation, Ripley, Mississippi, U. S. National Museum. 



931 



