PLATE XXXIX. 



PAGE 



Fig. 1. Blephas pbimigenius Blumenbach 163 



Lower molar viewed from above. Greatly reduced. 



Fig. 2. Elephas columbi Falconer 165 



Lower molar viewed from above. Greatly reduced. 



Fig. 3. Blephas impeeatoe Leidy 168 



Lower molar viewed from above. Greatly reduced. 

 From a photograph provided by the American Museum of Natural History, New York. 



