936 



MR. F. E. BEDDARD OX THE ANATOMV 



[Dee. 14, 



Mr. W. A, Foi'bes, I find that the proportions of the various 

 regions of the alimentary tract of Pithecia alhinasa are again veiy 

 diflerent. The small intestine in a. female of that species was 

 87| inches long and the lai-ge intestine 12i inches. Some 

 measurements of the two species P. 'inonacJms and P. sataiias are 

 given by Mr. Forbes in his paper upon the Ouakari Monkeys 

 already quoted here. When the body of the monkey was opened 

 the omentum was seen to extend right down the abdominal 

 cavity. It is attached for the length of an inch and a quaiter to 

 the end of the ascending and the beginning of the transverse 

 colon. ' The commencement of the omental attachment to the 

 colon is situated about l-L inch from the ileo-ca?cal valve. The 

 relations of the omentum to the colon appear to vary considerably 

 among the Primates. 



Text-fig. 292. 

 R.C. 



Ca. 



Liver of Pithecia pitliecia seen from abdominal snrface. 



C'«. Caudate lobe. L.C. lieft central lobe. L.L. Left lateral lobe. 

 B.C. Right central lobe. B.L. Right lateral lobe. Sp. Spigelian lobe. 



The ccecum (see text-fig. 290, p. 934) shows a fixed and uniform 

 curve of a semicircle. The frsenum attachiug it to the ileum ex- 

 tends to within a sixth or an eighth of an inch from its extreme 

 end. It is marked off from the colon by a distinct oblique groove, 

 and the commencement of the cjecum is of slightly greater calibre 

 than the adjoining colon. The cfeco-colic valve, which corresponds 

 of course to the constriction distinguishing the caecum and colon, 

 sujjerficially extends for rathei- more than halfway round the 

 periphery of the gut. A dense mass of tissue projecting into the 

 colon from about the middle of this bears the origin of the 

 ileum. 



