302 CACAIAO 



Genl. Char. Face and fore part of head naked ; color pale ; tail 

 short. 



Color. Face scarlet; fore part and sides of head cinnamon, the 

 hairs becoming long below the chin, where they are reddish chestnut ; 

 top of head, neck, upper parts and outer side of limbs whitish gray; 

 under parts cinnamon rufous ; inner side of limbs whitish gray tinged 

 with cinnamon rufous ; hands and feet yellowish brown. 



Young. Bates writes of the young (1. c.) p. 313, "I was surprised 

 to find the hair of the young animal much paler in color than that of 

 the adults, it being of a sandy and not brownish red hue, and con- 

 sequently did not differ overmuch from that of the white species, the 

 two forms therefore are less distinct from each other in their young 

 than in their adult states." 



Measurements. Skull : occipito-nasal length, 85 ; zygomatic width, 

 64; intertemporal width, 41.5; palatal length, 32; width of braincase, 

 52; median length of nasals, 16; length of upper molar series, 20; 

 length of mandible, 58; length of lower molar series, 23. Vertebrae: 

 Cervical, 7; Dorsal, 13; Lumbar, 6; Sacral, 4; Caudal, 15 to 20. 



The type in the Paris Museum is so faded that it will no longer 

 serve for comparison of colors. 



Bates says of this species, (1. c.) under the trivial name of 'white 

 Uakari,' that it is only found on the banks of the Japura River near its 

 principal mouth, and is confined, so far as he was able to ascertain, to 

 its western side. It goes in small troupes, in the tops of the highest 

 trees, and subsists on various kinds of fruits. The hunters say, while 

 nimble in its movements, it does not often leap, but runs along the 

 larger limbs when travelling from tree to tree. The young are carried 

 on the back of the mother. The Indians shoot them with poisoned 

 arrows, and they go a considerable distance after being wounded, and 

 an experienced hunter is required to follow them. The most expert 

 hunter is he who can keep up with a wounded Uakari, and catch it in 

 his arms when it falls exhausted. If then he wishes to keep the animal 

 alive, a pinch of salt, the antidote for the poison, is put into its mouth 

 and it revives. These monkeys are in great demand for presents, and 

 high prices are asked for them, often as much as the equivalent of 

 nearly twenty dollars. 



Adult Uakaris taken in the above manner rarely become tame, 

 remaining peevish and sulky and bite every one v/ho comes near them, 

 and are quite silent in captivity, and in the course of a few days refuse 

 to eat and die. Many succumb to inflammation of the lungs. One he 



