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DR. P. CHALMERS MITCHELL ON THE 



disposition. The single caecum is extremely large, although short, and passes directly 

 into the very wide hind-gut. The hind-gut is differentiated into a distinct but short 

 colic loop (C.L.) and a wide rather short rectum. In this case also, partly on account 

 of the condition of the specimen, I have only scanty notes of the veins, the general 

 course of which seems to correspond with that of the similar structure in Didelphys. 



Fig. 5. 



Intestinal Tract of Peragale lagotis. 



S. Cut end of duodenum near stomach. 

 R. Cut end of rectum near anus. 

 C. Caecum. 

 C.L. Colic loop. 



The Polyprotodont Marsupials show a primitive type of intestinal tract in which the 

 main features of the mammalian gut are indicated with diagrammatic simplicity. 



