FROM THE PLEISTOCENE OF THE PLAINS. 
EXPLANATION OF PLATES. 
Plate XXI. 
469 
-13. Dinobastts serus natural size. 
-5. Superior dentition of left side from without; do. from inner 
Premolar ; a, apical view. 
Fourth metacarpus from front ; ya, inner side ; jb, proximal 
Fifth metacarpus from front. 
Distal end of ? fifth metacarpus, from front. 
First phalangeof fifth digit from front ; /oa, do. from distal extremity. 
Second phalangeof fifth digit; iia, proximal extremity ; iib, distal 
Ungual phalange from above ; 12a, from side. 
Head of femur, nat. size, from head; a, proximal view. 
46. Canis indiamnsis Leidy ; natural size. 
Superior canine, from external side. 
Superior molars from below. 
Premaxillary bone with incisor from inside; 3a, do. from front. 
Plate XXII. 
Fig. 1. Bos crampianus Cope; anterior part of cranium with left horn-core 
from front and jepthorn-co^^ 
Fi". 3. Do. section at middle of length. 
Fio- 4. Section at 75 mm. from extremity. rntnral size 
Figs. 5-9. Bos scaphoceras Cope, lett horn core, 
Fig. 5. Posterior view. 
Fig. 6. Anterior view. 
Fig. 7. Superior view. 
Fig 8. Section near base. 
Pi* 9. Section proximad to first distal fr^ture. 
Figs. 1- 
Figs. 1- 
side. 
Fig. 6. 
Fig. 7. 
extremity. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
extremity. 
Fig. 12. 
Fig. 13. 
Figs. 14- 
Fig. 14. 
Fig. 15. 
Fig. 16. 
60 .TOUBX. A. X. s. PHILA., VOL. IX. 
