510 



DR. P. CHALMERS MITCHELL ON THE 



caecum ; next, a rather short colic loop which passes insensibly into a long rectum. 

 The anterior mesenteric vein curves round the contour of Meckel's tract, receiving 



Fig. 43. 



Intestinal Tract of Ateles variegatus. 



S. Cut end of duodenum near stomach. 

 R. Cut end of rectum near anus. 

 C. Csecum. 

 C2. Vestigial csecum. 

 C.L. Colie loop. 



irregular tributaries as well as a large csecal and a branched colic vein. The posterior 

 mesenteric vein drains both the colic loop and the rectum. 



In Cebus fatuellus (fig. 49, II, p. 521) the general pattern of the intestinal tract is 



