THE SAKIS. 185 



II. THE WHITE-HEADED SAKI. PITHECIA PITHECIA. 



Simla pithecia^ Linn., Syst. Nat., i., p. 40 (1766). 



Simia kucocephala, Audeb. Singes., Fam. vi., Sect, i., p. 9, 

 fig. 2 (1797). 



Pithecia adusta, Illig., Abh. Berl. Ak., 1804-1811, p. 107; 

 Kuhl, Beitr. Zool., p. 44 (1820). 



Pithecia nocturna, Illig., 1. c. ; Schl., Mus. Pays Bas, vii., p. 217 

 (1876; part). 



Pithecia leucocephala, Geoffr., Ann. du Mus., xix., p. 117 (18*2); 

 Gray, Voy. Sulphur, Zool., p. 12, pi. 2; id., Cat. Mon- 

 keys Brit. Mus., p. 59 (1870; part); Scl., P. Z. S., 1871, 

 p. 228. 



Pithecia ochrocephala, Kuhl, Beitr. Zool., p. 44 (1820, = young). 



Pithecia nifibarbata, Kuhl, t. c. p. 44 (1820). 



Pithecia capillamentosa, Spix, Sim. et Vespert. Bras., p. 16, 

 pi. ii (1823). 



Pithecia nifiventer, Geoffr., Cat. Meth. Primates, p. 55 (1851); 

 Gray, Cat. Monkeys Brit. Mus., p. 60 (part, 1870); Wagner, 

 Abhandl. Akad. Munch., v., pt. 2, p 436 (1848 : = ? ). 



Pithecia chrysocephala, Geoffr., Cat. Meth. Primates, p. 55 

 (1851). 



Pithecia pogonias, Gray, Voy. Sulphur, p. 13, pi. 2 (1844). 



Characters. Male. Hair black, very long over the body, and 

 especially on the tail. Head with short hair, white, washed with 

 yellow and divided by a central nude black streak ; the white 

 hair becoming yellow on the cheeks. 



Female. Greyish-black, washed with pale yellow, the hairs 

 being tipped with the latter colour ; moustache' yellow ; belly 

 red. 



Young Male. Belly rufous brown. 



