172 



osborn: OLIGOCENE, MIOCENE, PLIOCENE EQUID.E. 



Fig. 138. (Upper) Original figures of the lower grinding teeth of paratype and referred specimens of Pliohippus 

 proversus Merriam. 5. Inferior cheek tooth, No. 22316, outer and occlusal views. 6. P4?, No. 21332, occlusal view. 

 7. Inferior molar, No. 22330, outer and occlusal views. S. Mi?, No. 22312, outer and occlusal views. 9. M 2 , No. 

 22314, outer and occlusal views. 10. M3, No. 21333, occlusal view. Figures natural size. After Merriam, 1916, p. 529. 



(Lower) Original figures of the astragalus and left metacarpal fragment of paratype of Pliohippus proversus Merriam. 

 11. Left metacarpal III, No. 22318, anterior and proximal views. 12. Astragalus, No. 22334. Both figures one-half 

 natural size. After Merriam, 1916, p. 530. 



