OEDBE OP aUADEUMANA. 567 



without ever wetting or rurapling its valued chin appendage. 

 Many Men are Sakis in this respect. 



The Brachyures (Fig. 251) are remarkable for the baldness of 

 their head and their prominent forehead. A curious feature 

 observed in them is, that though their tail is very short, it is yet 

 so very bushy as to have the appearance of a ball. 



The Brachyures walk very well on their hind paws. The 

 Indians hunt them for their flesh, which is tender. They are 

 met with in Brazil and Peru, on the banks of the Upper 

 Amazon and the Orinoco. 



MONKEYS OP THE OLD WOELD. 



These Monkeys have the nostrils terminal and separated bj' a 

 very thin septum. They are, in addition, and with very rare 

 exceptions, characterised by callosities and abajoues. 



The callosities are those salient, nude, and hard plates which 

 exist at the posterior part of their body, and on which they rest 

 when sitting. The abajoues are more or less wide pouches 

 between the cheeks and the jaws, in which they place their food 

 for safety. 



An inspection of the jaws also discloses a very important 

 pecidiarity : all the Monkej^s of the Old World have the dental 

 formula of Man, namely, eight incisors, four canines, and twenty 

 molars, equally divided between the two jaws ; in addition, they 

 have, in youth, twenty milk-teeth, like a child. Their tail is 

 occasionally long, but more frequently short or absent, and never 

 prehensile. Their nails are channel-shaped, and differ but little 

 from our own. In a word, their physical organisation, their mode 

 of progression, and their intelKgence, render them next to Man, 

 and therefore give them first rank in the animal hierarchy. 



The Monkeys of the Old World comprise the following five 

 tribes : the Cynocephali, Macaques, Guenons, Semnopitheci, and 

 the Anthropomorphes. 



Tribe of Cynocephali. — The Cynocephali (Dog-headed Mon- 

 keys — Kvu)v KvvoQy Dog ; KecpaXrj, head) are thus named in con- 

 sequence of the elongated shape of their muzzles. They are 



