INTESTINAL TEACT OE MAMMALS. 

 Sub-Order EISSIPEDIA. 



495 



Division Akctoidea. 



Family Mustelid.e. Mustela subpalmata, Galictis barbara, Ictonyx zorilla, Lwtra 

 vulgaris. 



In these genera the pattern of the intestinal tract is much alike. The duodenum is 

 not well separated from Meckel's tract. The latter region is of moderate length and 



Fig. 33. 



Intestinal Tract of Cereal ptes caudivolvulus. 

 Letters as in 6g. '■>-. ■ 



is suspended in a series of simple loops with a terminal, nearly straight, recurrent portion, 

 at the circumference of a mesenteric outgrowth which is usually nearly circular. There 

 is no trace of a csecum. The hind-gut is not divided into colic region and rectum, 

 but there is usually a slight expansion of this region just distad of Meckel's tract, and 



3u 2' 



