PLATE LI. 



Fig. 1. — Maxillary teeth ot Palaeos\jops vaUidcns Cope. Natural size. Page 699. 

 Fig. 2. — Maxillary teeth of Palaeosyops major Leidy. Natural size. Page 661. 

 Fig. 3. — Maxillary teeth of iiniHoAi/Hs (fiaroniis Cope. Natur.al size. Page 70G. 



