PLATE XLV 



PAGE 



Fig. 1. PHOLAS PECTOROSA Conrad 724 



Exterior of right valve. Monmouth formation, Brightseat, Prince 

 George's County. 



Fig. 2. PANOPE BONASPES Gardner n. sp 723 



Internal cast of left valve. Magothy formation, Good Hope Hill near 

 Anacostia, D. C. 



Fig. 3. TEREDO RHOMBICA Gardner n. sp 732 



Exterior of imperfect right valve. Monmouth formation, Brightseat, 

 Prince George's County. 



Figs. 4, 5. PANOPE MOXMOUTHENSIS Gardner n. sp 722 



4. Exterior of right valve. 



5. Hinge of right valve. 



Monmouth formation, Brightseat, Prince George's County. 



941 



