Plate 3 



Figures 



1-3. Bairdia pittensis Brown, n. sp. (p. 10) 



1. Right valve, holotype, x 76, Loc. A, U.S.N.M. 128917 



2. Right valve, interior, holotype, x 77, Loc. A, U.S.N.M. 128917 



3. Left valve, interior, holotype, x 77, Loc. A, U.S.N.M. 128917 



4, 7, 8. Bairdoppilata pondera Jennings (p. 10) 



4. Right valve, interior, x 50, Loc. A, U.S.N.M. 128918 



7. Right side view, x 60, Loc. A, U.S.N.M. 128919 



8. Ventral view, x 60, Loc. A, U.S.N.M. 128920 



5, 6, 9. Bairdoppilata postextensa (Swain) (p. 10) 



5. Left side view, x 63, Loc. A, U.S.N.M. 128921 



6. Right side view, x 62, Loc. A, U.S.N.M. 128922 



9. Dorsal view, x 65, Loc. A, U.S.N.M. 128923 

 10-11. Trachyleberis communis (Israelsky) (p. 14) 



10. Right valve, exterior, x 81, Loc. A, U.S.N.M. 128943 



11 Right valve, interior, x 77, Loc. A, U.S.N.M. 128944 



12-13. Cytherideis mayeri (Howe and Garrett) (p. 23) 



12. Right valve, exterior, x 63, Loc. A, U.S.N.M. 129022 



13. Right valve, interior, x 63, Loc. A, U.S.N.M. 129023 

 14-15. Monoceratina biloba Schmidt (p. 23) 



14. Right valve, exterior, x 77, Loc. A, U.S.N.M. 129024 



15. Dorsal view, molt, x 83, Loc: This specimen is from a well (see 



p. 23). U.S.N.M. 129025 



16-17. Protocythere paratriplicata Swain (p. 16) 



16. Right side view, x 76, Loc. G, U.S.N.M. 128962 



17. Left valve, interior, x 66, Loc. J, U.S.N.M. 128963 



