108 



THE SKELETON OF THE HORSE 



surfaces and four borders. The superior surface is concave from before backward, 

 and almost all of it articulates with the tibial tarsal; a non-articular depression 

 cuts into its outer part, and sometimes there is a facet for the fibular tarsal bone on 

 the posterior angle. The inferior surface is convex, and is crossed by a non-articu- 

 lar groove, which separates facets for articulation with the third and the first and 



Tuber calcis 

 Fibular tarsal 



Fourth tarsal 



Trochlea of tibial tarsal 



Depression for external 

 lateral ligament 



■ Central tarsal 

 ' Third tarsal 



Groove for great meta- 

 tarsal artery 



Fourth (external) meta- 

 tarsal 



Vascidar canal 



Third {large) metatarsal 



Eminence for lateral ligament 



Fig. 



84. — Right Tarsal and Metatarsal Bones op Horse, External View. 



Anat. (1. Pferde-s.) 



(.\fter Schmaltz, Atlas d. 



second (fused) tarsals. The anterior or dorsal border and the internal border 

 are continuous, (,'onvex, and rough. The posterior or plantar border bears two prom- 

 inences, separated by a notch. The external border is oblique, and bears anterior 

 and posterior facets for articulation with the fourth tarsal, between which it is ex- 

 cavated and rough. 



