INTESTINAL TEACT OF MAMMALS. 



445 



Sub-Class MAESUPIALIA. 



Order MARSUPIALIA. 

 Sub-Order POLYPROTODONTIA. 

 Family Didelphyidje. Bidelphys virginiana (fig. 3). 



Fig. 3. 



Intestinal Trad oi' D'hIiI/i/ii/h rinjiii'iinm. 



S. Cut end of duodenum next stomach. 

 E. Cut end of rectum near anus. 

 C. Ciccum. 



vol. xvii. — part v. No. 2. — December, 1905. 



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