PLATE XXVIII 



Described 

 on Page 



Fig. 1. Ticholeftus rusticus (Leidy). Lateral view of fragmentary 

 skull and jaw. HT. Cat. No. 145 U.S.N.M. (After 

 Leidy, 1873.) 194 



Same as Fig. 1 . Anterior view of muzzle. 



Ticholeftus breviceps Douglass. Superior view of skull. 

 HT. Cat. No. 1191 CM. (Photograph from the 

 Carnegie Museum.) 190 



Same as Fig. 3. Superior view of mandibular ramus. 



Same as Fig. 3. Inferior view of skull. 

 One-half natural size, except Fig. 4 which is slightly larger 



366 



