254 



Comparative measurements of the fossil with the corresponding pari, of 

 the skull of a large buffalo arc as follows : 



Bison 



Bison 



latifrous. 



americanus. 



Inches. 



Inches. 



30 



26 



15£ 



12 



14 



11 



14J 



12 



13J 



11 



16 



IH 



' 13J 



10 



m 



10 



7 



cj 



6 



5 



2 



2 



13 



If 



5* 



43 



5| 



4f 



Distance between tips of horn-cores 



Distance between bases of born-cores 



Circumference at bases of born-cores 



Length of horn-core along lower curvature 



Breadth of forehead where narrowest 



Breadth of forehead at back of orbits 



Length of forehead from occiput to fronto-nasal suture . 



Breadth of occiput , 



Depth of occiput 



Breadth of condyles together 



Transverse diameter of occipital foramen 



Vertical diameter of occipital foramen 



Distance between ends of paramastoid processes 



Length of temporal fossa 



The California collection of fossils, belonging to the cabinet of Wabash 

 College, Indiana, contains several specimens of teeth which I suppose to 

 belong to Bison latifrons. They were loaned to me for examination through 

 the kindness of Professor E. 0. Hovey, and are represented in Figs. 6, 7, Plate 

 XXVIII. They consist of the second and third upper molars, and agree in 

 constitution with the corresponding teeth of the recent buffalo, and in size 

 correlate with the skull above described and referred to B. latifrons. 



The measurements of the specimens, in comparison with those of the 

 buffalo, are as follows : 





Bison 

 latifrons. 



Bison 

 americanus. 



Second upper molar : 

 Antero-posterior diameter of triturating surface 



Lines. 



16* 



11 

 14 



18 



101 



13A 



Lines. 

 15 



Transverse diameter of triturating surface 



Transverse diameter of crown near base 



lOf 



123 



Third upper molar : 

 Antero-posterior diameter of triturating surface 



4 



15 



Transverse diameter of triturating surface 



9# 



Transverse diameter of crown near base. 



4 



1U 





■*-"2 z 



