compared with that of the skull generally. In one specimen P. M. 2 (the 

 anterior) is .8, the second molar in transverse diameter, but in another 

 specimen it is less than half the same. 



M. 

 Length molar series 255 



" second molar, crown 050 



Width " " " 050 



" " premolar " -033 



Length " " 032 



" first (2d) lower premolar 028 



Width " " " " 076 



Total length cranium 560 



From inion and to end nasals 1 456 



From foramen magnum to inion 138 



Width at orbits 173 



Depth mandible at first molar 070 



About the size of the Indian Ehinorcerus, but with much larger teeth. 



Published July 25, 1873. 



