16 



53. The proximal half of the left ulna of the great Cave Bear. 



From one of the caverns in the limestone quarry at Oreston, near Ply- 

 mouth. Presented by Joseph Whidbey, Esq. 



54. A corresponding part of a smaller individual or species of Bear. 



From the bone-cave called Kent's Hole, near Torquay. 



Presented by Gerard Smith, Esq. 



55. The right radius of the great Cave Bear. 



From the bone-cave at Muggendorf. 



Presented by M. Augustus Vautier de Saltikoff. 



56. The right pisiform bone of the Ursus spelceus. 



57. The left pisiform bone of another individual. 



58. The right femur of the great Cave Bear. 



From the bone-cave at Mugerendorf. 



Do 



Presented by M. Augustus Vautier de Saltikoff". 



59. The left femur of the Ursus spelceus. 



59 1 . The corresponding femur of the White Bear. 



The difference between these two bones is analogous to that which has 

 been pointed out in the humeri of the recent and extinct species ; the 

 femur of the White Bear being broader in proportion to its length, espe- 

 cially at its two extremities. It is owing to this breadth that the small 

 trochanter is thrown wholly to the posterior surface of the bone, the 

 inner margin being continued beyond it ; whilst in the Cave Bear, the 

 small trochanter, though on the posterior surface of the bone, projects a 

 little beyond the inner margin. At the distal end of the bone, the tu- 

 berosity above the internal condyle, corresponding with that in the hu- 

 merus, is larger and more prominent in the White than in the Cave 

 Bear ; the same difference in the position in the small trochanter is pre- 

 sented by the Grisly Bear as compared with the Cave Bear, and the ex- 

 tremities of the bone are relatively broader. 



60. The middle metatarsal bone of the right foot of the Cave Bear. 

 60 1 . The corresponding bone of a White Bear. 



