486 



DE. P. CHALMEES MITCHELL ON THE 



one of which, as already explained, being coiled up with the caecum, and the second 

 being free. The rectal portion is very long, its anterior region being expanded to 

 form a series of minor loops. 



The anterior mesenteric vein curves round Meckel's tract and receives a large, 

 branching colic vein represented in fig. 28 as divided at X3, and a vein from the colic 

 loops (shown divided at X2 in the figures). It is joined by a normal posterior 

 mesenteric vein. 



In the Capybara (fig. 29) there is no well-separated duodenum. Meckel's tract has 



Est. 20. 



Intestinal Tract of Hydrochoerus capybara. 

 Lettering as in fists. 2b' and 28. 



the usual disposition, being composed of a large number of closely-set 'minor loops. 

 The csecum is extremely capacious, but is not spirally twisted to any appreciable extent, 

 but is sacculated, and has an interesting peculiarity described by Garrod (7). The 

 normal csecum is, in reality, not a direct continuation of the hind-gut, but a lateral 

 outgrowth from such a continuation. The peculiarity was not so marked externally in 



