FELIS SPELiEA. 121 



§ 4. Definition. — On comparing the femora of the Cave Lion with those of other 

 animals associated with it in Pleistocene deposits, the following points of difference may be 

 enumerated. The straightness and cyUndrical form of the shaft, and the symmetrical form 

 of the distal end, distinguish it from that of the Cave Bear. In the Hyaena it is also sym- 

 metrical, but the great difference in size prevents the two being confounded together. In 

 the latter animal, moreover, it is rather more bent and the patellar articulation is not so 

 sharply defined. The large development of the third trochanter in the Horse is a point by 

 which the most slender bone may be distinguished at a glance. 



