PROMERYCOCHCERUS 



149 



Foramina: The infraorbital foramina are above the interval between P 4 and M 1 . The supra- 

 orbitals are 20 mm. apart. The posterior palatines are apparently obsolete. 



Dentition: The metastyle of M 3 is not robust. There are no complete internal cingula on the 

 molars or on P\ P 1 is not so completely isolated as in some species. The incisors are very small. 



Fig. 109. — Promerycochcerus va/itasselensis Peterson. Superior view of skull. HT. Cat. No. 1230 CM. 1/3 nat. size. 



(After Peterson, 1914.) 



Fio. 110. — Promerycochcerus vtmiasselensis Peterson. Inferior view of skull. HT. Cat. No. 1230 CM. 1/3 nat. size. 



(After Peterson, 1914.) 



