PLATE II. 



Fig. 5 . Protylopus petersoni. Skull, from the right side. 



Fig. 6. Protylopus petersoni. Upper molars and premolars of right side, crown view. 



Fig. 7. Protylopus petersoni. Lower molars and premolars of right side, crown view. 



Fig. 8. Protylopus petersoni. Left pes, front view. 



Fig. 9. Protylopus petersoni. Left manus, front view. M., magnum; U., unciform. 



Fig. 10. Lcptoreodon gracilis. Skull, from right side. Pi, first premolar ; p 2, second 



premolar. 



Fig. 11. Lcptoreodon gracilis. Upper dentition of right side. 



Fig. 12. Lcptoreodon gracilis. Lower dentition of right side. C, canine; i 3, lateral 



incisor ; p 1, caniniform first premolar. 



Fig. 13. Lcptoreodon gracilis. Right manus. Sc, scaphoid; R., radius. 



Fig. 14. Lcptoreodon gracilis. Left pes, front view. 



{All figures of natural size.) 



