132 



SKELETON OF THE OX 



into a foramen by a bar of bone. The other notch is antero-internal, small, and 

 sometimes replaced by a foramen or absent. 



The obturator foramen is large and elliptical. Its inner border is thin and 

 sharp. 



External condyle of femur 

 External tuberosity of tibia 



External malleolus 

 Fibular tarsal bone 



Internal malleolus 

 Tibial tarsal bone 



Central + fourth tarsal bone 

 Second tarsal bone 

 First tarsal bone 

 ^ — Small metatarsal bone 



Proximal sesa)noid 

 First phalanx 



Second phalanx 



Distal sesamoid 

 Third phalanx 



Fig. 101. — Skeleton of Left Hind Limb of Ox, from Middle of Thigh Downward, Posterior View. 

 SI, Tibia; 24, tuber calcis; 23, large metatarsal bone. (After P]llenberger-Baum, Aiiat. ftir Kiinstler.) 



The pelvic inlet is elliptical and is more oblique than in the horse. In a cow 

 of medium size the conjugate diameter is about nine and a half inches (ca, 23 to 24 

 cm.), and the transverse about seven inches (ca. 18 cm.). The anterior end of the 

 symphysis lies in a transverse plane through the junction of the third and fourth 



