with Descriptions of New Species. 



241 



Desmatochcerus^^ curvidens, subgen. et sp. nov. 



(Figs. 6 A, B.) 



Holotype, Cat. No. 10997, Y. P. M. Upper Oligocene (middle John Day), 

 North Fork, John Day River, 15 miles above junction with the main stream, 

 Oregon. 



Specific cJiaracters. — Small size ; infra-orbital foramen 

 above posterior part of P^ ; buUse compressed, not extend- 

 ing below postg'lenoid process ; steep basicranial axis ; 

 Po and P3 crowded, unreduced ; inferior border of ramus 

 turns sharply downward below anterior part of M3 ; 



Fig. 6 A. 



Fig. 6 B. 



Fig. 6. — Desmatochcerus curvidens, subgen. et sp. nov. Holotype. Cat. No. 

 10997, Y. P. M. A, left lateral view of skull and jaw; B, left half, inferior 

 view. X about 3/8. 



^^ dea-fia, bond, -J- xoipos, hog, in allusion to its being the link between 

 Eporeodon and Promerycochoerus. 



