INTESTINAL TRACT OF MAMMALS. 



491 



which the simple gut is suspended along its entire course from stomach to anus by 

 a simple fold of mesentery. 



Family Ekixaceid.£. Erinaceus algirus. 



The pattern of the intestinal tract is practically identical with that found in Centetes, 

 which I describe below. 



Family Potajiogalid^e. 

 I have examined no specimen of Potamogcde, and can find no recorded anatomy. 



Pier. 31. 



Intestinal Tract of C'enletcs ecaudatus. 

 S. Cut end of duodenum near stomach. 

 1!. Cut end of rectum near anus. 



