PLATE XXI 



Described 

 on Page 



Fig. 1. Merycochcerus magnus Loomis. Superior view of skull. 



HT. Cat. No. 14242 A.M.N.H. 154 



Fig. 2. Same as Fig. 1. Inferior view. 



Fig. 3. Same as Fig. 1. Superior view of mandibular rami. 



Fig. 4. Same as Fig. 1 . Lateral view of ramus. 



One-third natural size 



(Photographs from the American Museum of Natural History) 



352 



