URSUS. 



23 



The tibia is specially short, and Gandry and Boule have suggested that this is perhaps 

 a disposition favourable for descending into the caves in which the animal lived. 

 Owen 1 attempts to discriminate between the femur of the different species of fossil 



Fia. 5.— (1) Front view and (2) ri; 

 Sandford (Taunton Mas.) ( ^ nat. size). 



t side view of left femur attributed to U. horribilis, from 



bears. He says that in the brown and grizzly bears the femnr is broader in 

 proportion to its length, and the tuberosity above the internal condyle is larger 

 than in the cave bear. He also states that in the cave bear the lesser trochanter 

 projects a little beyond the inner margin, while in the grizzly and brown beat's il 

 is thrown wholly on the posterior surface of the bone. 

 1 ' Brit, Foss. Man mi.,' p. 07. 



