THE SAKIS. 183 



Pithecia monachus, Geoffr., Ann. Mus., xix., p. 116 (1812); 



Flower, P. Z. S., 1862, p. 326, pi. xxxvii. ; Gray, Cat. 



Monkeys Brit. Mus., p. 59 (1870). 

 Pithecia hirsuta, Spix, Sim. et Vespert. Bras., p. 14, pi. g 



(1823). 



Pithecia inusta, Spix, t. c. p. 15, pi. x. (1823). 

 Pithecia irrorata, Gray, Voy. Sulphur, Zool., p. 14, pi. 3 (1844). 

 Pithecia albicans, Gray, P. Z. S., 1860, p. 231, pi. Ixxxi. 

 Pithecia wonacha, Schl., Mus. Pays Bas, vii., p. 220 (1876). 



Characters. Fur harsh, long and loose, with a hood of for- 

 wardly-directed hairs on the upper part of the head, neck, and 

 shoulders. Face bare, long, and narrow ; nose large and full ; 

 nostrils widely separated and lateral. Face dark purplish- 

 brown, and black on the nose, paler round the eyes, and 

 sparingly covered with short coarse whitish hairs ; a yellowish- 

 white patch on the cheeks, terminating in front in a distinct 

 line from the inner corner of the eye to below the angle of the 

 mouth ; margin of upper lips white ; ears large, round, naked, 

 and of the same colour as the face ; upper part and back of 

 head, neck, shoulders, back, arms, thighs, and tail, black, 

 washed with yellowish-white, becoming yellowish-brown on the 

 hinder part of the body. Throat, breast, under side of body, 

 and inside of thighs, pale yellowish-brown, sparingly haired. 

 Tail 1 8 inches long, cylindrical, and bushy at the end; the hair 

 long, coarse, curled, black, washed with pale yellowish-brown. 

 Legs black; fore-arm black, washed with white ; upper surface 

 of hands, feet, and digits, white. Hands small, thumbs short, 

 parallel to the other fingers; nails black, somewhat com- 

 pressed, pointed, that of the thumb flatter; great-toe well 

 developed, standing apart from the other toes, its nail flat 



