PLATE XXXIII. 



PAGE 



Fig. 1. SOLEN LiSEONENSis ( ?) Aldrich 165 



Fragment of left valve. % mile below Chapel Point. 



Figs. 2, 2a. Tellina williamsi Clark -. 167 



2. Exterior of left valve. Potomac Creek. 

 2a. Interior of same specimen. 



Fig. 3. Tellixa vlrginiana Clark 166 



Exterior of left valve. Hanoverville, Va. 



Fig. 4. Mereteix lenis (Conrad) 168 



Exterior of right valve. Woodstock. 



Figs. 5-9. JMeeetkix subimpeessa Conrad 170 



5. Exterior of right valve. Acad. Nat. Sci. Phila. 

 5a. Interior of same specimen. 



6. Dorsal aspect of complete individual. Acad. Nat. Sci. Phila. 



7. Exterior of left valve. Same collection. 



8. Exterior of right valve. 



8a. Interior of same specimen. 



9. Interior of left valve. 



9a. Exterior of same specimen. 



285 



