THE SAKIS. 185 



II. THE WHITE-HEADED SAKI. PITHECIA PITHECIA. 



Stmia pithecta, Linn., Syst. Nat., i., p. 40 (1766). 



Simia leucocephala^ Audeb. Singes., Fam. vi., Sect, i., p. 9, 

 fig. 2 (1797). 



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

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



Pitheda nocturna^ IHig*) !• 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., 187 1, 

 p. 228. 



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



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



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

 pi. II (1823). 



Pithecia rufiventer^ 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. 



youn^ Male.. — Belly rufous brown. 



