PLATE LXXVI. 
PAGE 
Figs. 1-3. Chione alveata (Conrad ) 310 
1. Interior of right valve. St. Mary's River. 
2. Exterior of right valve. Same locality. 
3. Exterior of right valve. Same locality. 
Figs. 4, 5. Venus rileyi Conrad 304 
4. Interior of left valve. Plum Point. 
5. Exterior of right valve. Same locality. 
Figs. 6-8. Ctthekea (Antigona) staminea Conrad 314 
6. Interior of right valve. Plum Point. 
7. Exterior of left valve. Same locality. 
8. Exterior of right valve. Same locality. 
Figs. 9-11. Chione parkeria n. sp 310 
9. Exterior of right valve. Two miles south of Parker's Creek. 
10. Interior of right valve. Same locality. 
11. Exterior of left valve. Same locality. 
