104 THE ARTISTIC ANATOMY OF ANIMALS 



it is a little smaller in size. The small cuneiform, which 

 occupies the inner side of the tarsus, is the smallest bone in 

 this region ; it is sometimes divided into two parts ; this 

 raises the number of the cuneiforms to three, and that of the 

 bones of the tarsus to seven. 



The bones of the metatarsus and the phalanges are equal 



Fig. 54. 



T\ 



-Tarsus of the Horse : Left Posterior Limb, Anterior 

 Surface. 



I, Tibia ; 2, internal tuberosity of the inferior extremity of the tibia 

 (homologue of the internal maHeolus of man); 3, external tuberosity 

 of the inferior extremity of the tibia (homologue of the external malleolus) ; 

 4, median crest lodged in the groove of the pulley of the astragalus ; 5, 

 pulley of the astragalus ; 6, internal tuberosity of the astragalus ; 7, 

 calcaneum ; 8, cuboid ; 9, scaphoid ; 10, great cuneiform, the small cuneiform 

 is placed behind this latter; 11, principal metatarsal; 12, external 

 rudimentary metatarsal. The internal rudimentary metatarsal, being 

 more slender than the external, does not appear in the figure. 



in number to the corresponding bones in the anterior limbs ; 

 they are formed on a type analogous to that of these latter. 

 Accordingly, we shall merely indicate the differences which 

 characterize them. 



The principal metatarsal is longer than the metacarpal of 



