No. 2328. PLEISTOCENE VERTEBRATES IN UNITED STATES— HAY. 145 



Figs. 5, 6. — Sangamona fugitiva. Part of lower jaw and teeth. X 1. 



5. View of inner face. 



6. View of grinding surface. 



Figs. 7-11. — Taurotragus americantis. Teeth. X 1. 



7. Lower right foivrth milk molar, inner face. 



8. Lower left fii*t molar, inner face. 



9. Lower right second molar, inner face. 



10. Lower left hindermost molar, inner face. 



11. Upper right second molar, outer face. 



Plate 6. 



Figs. 1, 2, 5-8. — Cervalces rooseveJti? Teeth X 1. 



1. Lower left second and third molars. Inner faces. 



2. Same teeth, showing grinding surfaces. 



5. Incisor, showing lingual face. 



6. Same tooth, showing lateral face. 



7. Upper left second and third molars, showing the grinding surfaces. 



8. Same teeth, outer faces. 



Figs. 3, 4. — Alces americanus. Incisor. X 1. 



3. View of lateral face. 



4. View of lingual face. 



Figs. 9, 10. — Symbos promptus. Type. Third molar. X 1. 



9. View of grinding surface. 

 10. View of outer face. 



Plate 7. 



Fig. 1. — Equus compUcatus Leidy. X 1. Lower right second to fourth premo- 

 lars. 



Fig. 2. — Equus JiatcJieri Hay. X 1. An upper left first or second molar, show- 

 ing a polished transverse section. 



Figs. 3-8.— Camelops nitidus, new species. Lower left teeth. X 1. 



3. Inner face of first molar. Type. 



4. Grinding face of same tooth. 



5. Inner face of second molar. 



6. Grinding face of same tooth. 



7. Grinding face of fourth premolar. 



8. Same tooth, showing inner face. 



Figs. 9-12. — Equus holmesi, new species. Teeth. X 1. 



9. Upper right fourth premolar; outer face. 



10. Upper right second molar ; outer face. 



11. Upper right fourth premolar; grinding surface. 



12. Upper right second molar; grinding surface. 



Plate 8. 



Figs. 1-6. — Symbos promptus? Vertebrae X i. 



1. Dorsal vertebra, seen from above. 



2. Same vertebra, seen from in front. 



3. Lumbar vertebra, seen from in front. 



4. Cervical, the fifth?, seen from the left side. 



5. Same vertebra, seen from in front. 



6. Same vertebra seen from behind, r. h., position of pit for head of rib; 

 t. v., position of transverse process ; v. a., vertebrarterial foramen. 



181404— 21— Proc.N.M.vol.58 10 



