t86 Lloyd's natural history. 



Distribution.' — Interior of Demerara, Kaicteur Falls; Rio Negro, 

 and Rio Branco in Amazonia ; Cayenne ; Surinam. 



III. THE BLACK SAKI. PITHECIA SATANAS. 



Saki ftoir, F. Cuv., Hist. Nat. Mammif., pi. 78. 



Simia satanas, Hoffm., Mag. Ges. Berl., x., p. 93 (1807) ; 



Humb., Obs. Zool., i., p. 314, pi. xxvii. (181 1). 

 Pithecia satanas, Geoffr., Ann. Mus., xix., p. 115 (1812); Scl., 



P. Z. S., 1864, p. 712, pi. xli. ; id., t. c. p. 138; Schl., 



Mus. Pays Bas, vii., p. 224 (1876). 

 Chiropotes cuxto, Lesson, Sp. Mamm. Bimanes et Quadrum., 



p. 179 {1840). 

 Chiropotes ater, Gray, Cat. Monkeys Brit. Mus., p. 61 (1870). 

 Chiropotes satanas, Gray, t. c. p. 61. 



Characters. — Male. — Fur soft ; tail bushy and as long as the 

 body; crown with long black hair arranged on each side, 

 divided by a central line. " The hair of the head sits on it 

 like a cap, and looks as if it had been carefully brushed." {Bates.) 

 Long whiskers on each side, and the chin with a moderate 

 beard. Fur black and shining ; back sometimes washed with 

 grey or ashy-brown. 



Female.-^Similar to the male, but having a browner back. 



young. — Beard absent or rudimentary ; hair of crown radiating 

 from centre and projecting forwards. 



The skull in this species is sometimes ossified into one 

 piece. 



Distribution. — Lower Amazonia ; Para ; British Guiana ; the 

 River Orinoco, towards the Rio Negro. 



Habits. — Little is known of the habits of the Black Saki, 

 which is also known under the names of *- Cuxio " and " Mono 



