252 KANSAS UNIVERSITY SCIENCE BULLETIN. 



the humeroradial joint is 23.3 per cent, of the length of the 

 humerus in B. bison and 27.4 per cent, in B. occidentalis, while 

 a comparison of the femurotibial joint with the femur gives a 

 ratio of 26.1 per cent, in B. bison and 26.8 per cent, in B. occi- 

 dentalis. 



