PLATE II. 



Fig. 1. Ancodus brachyrhynchus, Osb. and Wort. ; right upper third molar, viewed from 



below. Page 24. 



Fig. 2. Ancodus brachyrhynchus f, Osb. and Wort. ; left upper third premolar, external view. 



Fig. 3. The same tooth viewed from below. 



Fig. 4. Ancodus brachyrhynchus ? Osb. and Wort. ; right lower canine, viewed from within. 



Fig. 5. The same tooth, viewed irom without. 



Fig. 6. Ancodus brachyrhynchus ? Osb. and Wort. ; right lower third incisor, exterior view. 



Fig. 7. The same tooth, interior view. 



Fig. 8. Ancoius brachyrhynchus? Osb. and Wort. ; left lower first incisor ; exterior view. 



Fig. 9. The same, seen from within. 



Fig. 10. Eiotheriurn coarctatum, Cope; right upper first molar, viewed from below. Pau;e 26. 



Fig. 11. Eiotheriurn coarctatum, Cope; right upper third molar, as viewed lrom below. 



Fig. 12. Eiotheriurn coarctatum? Cope; right upper third premolar, outer aspect. 



Fig. 13. Same tooth, seen from below. 



Fig. 14. Eiotheriurn coarctatum ? Cope; right upper fourth premolar, inner aspect. 



Fig. 15. The same specimen, viewed from below 



Fig. 16. Agriochoerus antiq uus ? Leidy ; left upper third molar, crown view from below. 



Page 28. 



Fig. 17. Agriochozrus antiq uus ? Leidy ; left upper third molar, viewed from below. 



Fig. 18. Merycoidodon culbertsoni, Leidy ; left lower first premolar (caniniform), outer 



aspect. Page 29. 



Fig. 19. The same as seen from within. 



Fig. 20. Merycoidodon culbertsoni, Leidy ; left upper canine, inner aspect. 



Fig. 21. The same tooth, posterior aspect. 



Fig. 22. Outline of transverse section of same at a. 



Fig. 23. Outline of transverse section at b. 



Fig. 24. Merycoidodon culbertsoni, Leidy ; right lower second moiar, inner view. 



Fig. 25. The same tooth, viewed from without. 



Fig. 26. The same, viewed from above. 



Abbreviations for cusps, etc., as in plate III. 



