1903.] 



THE MUSCLES OP THE UXGULATA. 



287 



SO that the junction betAveen the flesh and the tendon has a 

 scalloped appearance. There is only one crus, which rises far 

 back in the lumbar region ; in the Harnessed Antelope (55) it 

 comes from the last lumbar, it runs forward as a long narrow 

 tendinous band and becomes fleshy just before the aortic opening ; 

 here the main pai't passes to the right of the aorta and later on 

 divides to form the oesophageal sphincter ; the part which passes 



Text-fi^. 27. 



Diaphragm of Harnessed Antelope. (Abdominal surface.) 



A. Crus. 



B. Aortic opening. 



C. Qilsopliageal opening. 



D. Caval opening. 



E. Central tendon. 



F. Costal origin. 



G. Psoas. 



H. Retractor ultimas costa;. 

 I. Last (ISth) rib. 



on the left side of the aorta is much smaller, and in some animals, 

 e.g. the Chevrotain (21), is practically absent. There is only one 

 arcuate ligament on each side, since the quadratus lumborum is 

 quite concealed by the psoas. The caval opening is on the right 

 side of the central tendon as usual. In the Horse, Chauveau (II.) 



