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Show 1903.] THE MUSCLES OF THE UNGULATA. 287 so that the junction between 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 part passes to the right of the aorta and later on divides to form the oesophageal sphincter; the part which passes Text-fig. 27. A. Cms. F. Costal origin. B. Aortic opening. G. Psoas. C. (Esopbageal opening. H. Retractor ultima? costse. D. Caval opening. I. Last (13th) rib. E. Central tendon. 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.) |