352 



THE ANATOMY OF VEETEBEATED ANIMALS. 



deep pit for the round ligament, and there is a peculiar and 

 vevy characteristic fossa Q") on the inner and posterior 

 face of the distal moiety of the bone. 



Fig. 100. 



The proximal end of the fibula 

 is reduced to a mere rudiment ; its 

 shaft is not represented by bone ; 

 and its distal end is ankylosed 

 with the tibia, and has the ap- 

 pearance of being an external 

 malleolar process of that bone. 

 The distal end of the tibia pre- 

 sents two deep, obliqiiely-directed 

 concavities, which correspond 

 with the convexities of the astra- 

 galus. 



There are six or seven tarsal 

 bones, according as the ento- and 

 meso-cuneiform bones remain dis- 

 tinct or become ankylosed. The 

 astragalus (Fig. 93 A, 94 B) is ex- 

 tremely characteristic. It presents 

 two convex ridges separated by a 

 deep fossa, and directed obliquely 

 from behind and within, forwards 

 and outwards, to the tibia ; and it 

 has a nearly flat distal face, 

 not borne upon any distinct neck, 

 which articulates almost wholly 

 with the naviculare, presenting 

 only a very small facet to the 

 „ cuboid. 



j^_ The naviculare and the ecto- 



Fig. ICC— A, Left femur of cuneiform are peculiarly broad and 



a Horse, posterior view, flattened in form (Fig. 93 A, 94 B). 



IhSitei' i'Thkdtro- The metatarsus and digits repeat 



chanter. 4 Lesser tro- the aiTangements of the fore limb ; 



chanter 5. Pit for round i3^^ the principal metatai'sal is 



ligament. 10. Fossa, , \, . . 



11. Condyles. more slender m its proportions, 



