ON THE UAKARI MONKEYS. 



113 



P. Z. S. 1880, 

 p. 634. 



would seem to indicate that in its native forests Brachyurus is more of a p. z. g. 1880 



vegetarian than its allies. 



There are no valvulae conniventes. Peyer's patches are almost con- 

 fined to the last yard of the ileum, there being 14 large and well- 

 defined ones in that space, the largest | inch long. There is a large one 

 close to the ileo-caecal aperture. Higher up only a few can be found ; 

 and they disappear in the jejunum. The caecum is in no degree sac- 

 culated, neither is the colon. The former, which is of considerably 

 larger calibre, is cylindrical, blunt, and curved on itself when distended 

 into more than a circle, with a well-developed median peritoneal fraenum. 



The general form and proportions of the liver may be seen in figs. 3 

 & 4 (pp. 114, 115), representing respectively the diaphragmatic and 

 visceral (superior and inferior) aspects of that organ. Regarding its 

 form in the Cebidse we are told by Prof. Flower, in his lectures on the 

 digestive system of the Mammalia (Med. Times and Gaz., May 4, 1872, 

 p. 509), that " all the members of this group in which he has been able 

 to describe the liver, agree in the depth to which the lateral fissures cut 

 up the organ into its four principal lobes, and also in the great develop- 

 ment of the caudate lobe, which is the principal character by which they 

 can at once be distinguished from the Old-world families." In both 

 these respects, as will be seen by an inspection of the figures, the liver 

 of Brachyurus is perfectly Cebine. The two lateral fissures extend very 

 nearly, at least on the superior surface, back to the posterior (attached) 

 margin of the liver. The four principal lobes are very distinct ; the left 



p. 635. 



* Taken from his lectures, Med. Times &c.. May 4, 1872. 



