PLATE XX 



Described 

 on Page 



Fig. 1. Promerycochcerus thomsoni Loomis. Inferior view of skull. 



PT. Cat. No. 12948 A.M.N.H. 1/3 nat. size. 145 



Fig 2. Promerycochoerus vantasselensis -pygmceus Loomis. Superior 

 view of skull. HT. Cat. No. 12967 A.M.N.H. 1/2 

 nat. size. 1-50 



Fig. 3. Same as Fig. 2. Inferior view. 



(Photographs from the American Museum of Natural History) 



350 



