MONKEYS OF Tim OLD WOULD. 
305 
does the bruin, which in ChrysotJirix, etc., is nearly 
smooth, while in Cehcs (Figs. 328, 329) the hemispheres 
are nearly as much convoluted as in the catarrhine apes. 
(Huxley.) 
The monkeys of the Old World intergrade with the apes, 
Fjg. 327.— Head of Ateles marginatus. Fig. 32S.— Head of Cehus capucinus. 
From Darwin. From Darwin. 
Fig. 329.— Head of Cehus vellerosus. Fig. 330.— Head of Semnopithecus 
From Darwin. cornutus. From Darwin . 
and are thus more specialized or highly developed than 
those of the New World. The septum of the nose is nar- 
row, hence they are said to be catarrhine or thin-nosed, 
while the tail is short and not prehensile. 
The catarrhine monkeys {CercopithecidcB) walk on all- 
