512 



DE. P. CHALMEES MITCHELL ON THE 



Family Hylobatid^e. 



I have not myself had an opportunity of examining the intestinal tract of a Gibbon, 

 but, from the published accounts of several authors, it is clear that the pattern does 

 not differ in any important respect from that of the Anthropomorphse. The duodenum 

 is not distinct as a separate loop. Meckel's tract is relatively long and forms a series 



Fig. 44. 



Intestinal Tract of Cercopithecus wernevi. 

 Lettering as in fig. 43. 



of closely aggregated minor loops with a terminal unconvoluted portion arranged 

 round three-quarters of the periphery of a nearly circular expanse of mesentery, the 

 proximal portion of the colon occupying the terminal quarter. The csecum is short. 

 nearly globular, and terminates in a very long twisted vermiform appendix. The 

 hind-gut is also long, but is said to vary considerably in the different species. 



