PLATE II. 



Page. 



MyTILARCA .IE88IBJS, n. 8p 14 



Pig. I. Left valve. 



Fig. 2. Left valve of another specimen. 



Fig. 3. Part of another left valve. 



Fig. 4. Anterior cast of right valve. 



Fig. 5. Anterior end of left valve. 



Fig. 6. Part of surface of shell magnified four diameters. 



LlOPTERIA BUBOVATA, n. 8p 13 



Fig. 7. Left valve. 



Fig. 8. Right valve of another specimen. 

 Fig. 9. Left valve of another specimen. 



LlOPTEKIA SPECIOSA, n. 8p l& 



Fig. 10. Left valve. 



El.YMELLA MI8SOURIEN8I8, n. SP 15 



Fig. 11. Left valve. 



Fig. 12. Cardinal view of a cast . 



PALJSOSOLEN OCCIDENTALI8, n. Sp Ik 



Fig. 13. Cardinal view. 

 Fig. 14. View of left valve. 



SlHIZODUS 8EDALIEN8IS, n. Sp 17 



Fig. 15. Cardinal view. 

 Fig. 16. View of right valve. 



Macro don pettisensis, n. sp 10 



Fig. 17. Right valve. 



Fig. 18. Right valve of a larger specimen. 



M acbodon blairi, n. sp 11 



Fig. 19. Right valve. 

 Fig. 20. Left valve. 



Fig. 21. Left valve of a small specimen. 

 Fig. 22. Cardinal view. 

 Fig. 23. Left valve of same. 



Fig. 24. Left valve of a medium sized specimen. 



Cypricardella eximia, n. sp.. 15 



Fig. 25. Left valve. 



LUNULICARDIUM RETBORSUM, n. Sp t> 



Fig. 26. Right valve. 



Fig. 27. Left valve of a smaller specimen. 

 Fig. 28. Cardinal view of same. 



Sphenottjs sinuatub, n. sp y 



Fig. 29. Right valve. 



Fig. 30. Left valve of a smaller specimen. 



MURCHISONIA INDIAN EN8IS, n. Sp lb 



Fig. 31. Lateral view. 



Fig. 32. Part of surface magnified. 



HOLOPEA GRANDIS, n. Sp . 19' 



Fig. 33. Basal view. 

 Fig. 34. Lateral view. 



Strap aroll. us missouriensis, n. sp . . , ,,, 2V 



Fig. 35. View of a nearly entire specimen. 

 Fig. 36. View of a larger specimen. 



