636 



MR. W. A. FORBES ON THE UAKARI MONKEYS. [NoV. 30, 



by the left lateral lobe at its antero-iiitenial angle. The vena cava 

 inferior is almost entirely bridged over by hepatic tissue between the 

 Spigelian and caudate lobes. Tiie development or otherwise of this 

 bridge, however, is an unimportant feature in the liver of the Primates, 

 and is largely an individual structure. 



On the whole, this \\yex oi Brachjurus rubicundus more \esQm\Aei 

 that of Callithrix amicta in its structure and proportions than that 



Fig. 3. 



V.C.&VH 



Liver of Eed tJakari, from above. About uatural size. 



of any other species I am acquainted with, though I have not seen 

 that of Pithecia monachus^, wliich, judging from Prof. Flower's de- 

 scription", must much resemble that of Brachi/urus. In two speci- 

 mens I have by me of the liver of P. satanus, the caudate lobe is 

 triangular and forked instead of square, and the left lateral lobe is 

 proportionally smaller than in Brachyinvs ; this develops moreover 



' P.S. Jan. 27, 1881. — The recent death of a specimen of this species allows 

 me to confirm the i-esemblauce of its Hver to that of Brachyiirus. 

 ■ P. Z. S. 1862, p. 332, and Med. Times, &c., s. c. p. 508. 



