PLATE XV 



Described 

 on Page 



Fig. 1 . Pr ornery cochoerus erythroce-ps Stock. Anterior part of skull, 

 palatal view. HT. Cat. No. 486 C.I.T. 2/3 nat. size. 

 (After Stock, 1932.) 119 



Fig. 2. Same as Fig. 1. Enlarged view of premolar dentition. 



Fig. 3. Same as Fig. 1. Dorsal view. Drawn by Mr. Ridgway for 

 this monograph. 



Fig. 4. Promerycocho?rus hollandi Douglass. Superior view of 

 mandibular rami. HT. Cat. No. 1 194 CM. 1/3 nat. 

 size. (Photograph from the Carnegie Museum.) 124 



Fig. 5. Same as Fig. 4. Inferior view of skull. 



340 



