464 



DE. P. CHALMEES MITCHELL ON THE 



Order SIREN I A. 



Family ManatidjE. Manatus inunguis (fig. 15). 

 In the Manatee the duodenal loop is not differentiated from the proximal loops of 



Pig. 15. 



Intestinal Tract of Manatus inunguis. 

 S. Cut end of duodenum near stomach. 

 E. Cut end of rectum near anus, 

 C. 



C.2../ 



Paired caeca. 



X. Cut and separated ends of mesenteric vein. 



