PLATE VII. 



Fig. 1. Hycenodon cruentus, Leidy ; left raanibular ramus viewed from without. Page 59. 

 Fig. 2. The same specimen viewed from above- 

 Fig. 3. Hycenodon cruentus, Leidy ; left lower second premolar, outer side view. 

 Fig. 4. Hycenodon crucians ? Leidy: upper left fourth premolar, exterior aspect. Page 60. 

 Fig. 5. The same tooth, interior aspect. 

 Fig. 6. The same tooth, posterior aspect. 

 Fig. 7. ? Hemipsalodon grandis, Cope; left lower canine, inner side view; one-half the 



natural size. Page 61. 

 Fig. 8. Outline of transverse section of same at s. 

 Fig. 9. Cynodictis lippincottianus (Cope) ; left lower third premolar, viewed from without. 



Page . 

 Fig. 10. The same as seen from within. 



Fig. 11. Cynodictis lippincottianus (Cope) ; left lower fourth premolar, exterior view. 

 Fig. 12. Cynodictis lippincottianus (Cope) ; right lower first molar, external view. 

 Fig. 13. The same, internal view. 

 Fig. 14. The same, posterior view. 

 Fig. 15. Dophanus felinus, Scott ; hinder portion of the right maxilla holding the fourth 



premolar, viewed from below. Page 62. 

 Fig. 16. Same specimen, external view. 

 Fig. 17. Protemnocyon hartshornianus (Cope) ; left upper fourth premolar, internal aspect. 



Page 63. 

 Fig. IS. Protemnocyon hartshornianus (Cope) ; left upper fourth premolar, viewed from 



within. 

 Fig. 19. The same tooth, viewed from without. 

 Fig. 20. The same tooth, from below. 



Fig. 21. Dinictis felina, Leidy ; right lower first molar, outer view. Page 64. 

 Fig. 22. The same, inner view. 

 Fig. 23. The same, view from above. 

 Fig. 24. Dinictis felina, Leidy ; left upper canine, external view. 



c, canine; d., deuterocone; m., molar; p., premolar; pr., protocone ; prs., protostyle; 

 tr., tritocone. 



