THE MACAQUES. 9 



altitudes), longer on the head, back and limbs, shortest over 

 the sacrum ; hair on the head parted outwards from the centre ; 

 fingers slightly haired; tail thinly haired, or nude in old 

 animals. In individuals living in the inclement regions of 

 Eastern Thibet, the tail is thickly haired. 



General colour dark brown or blackish ; cheeks, underside 

 of body, inner sides of arms and legs paler, washed with 

 yellowish, the hairs being very closely ringed (in some more 

 distinctly than in others), for their outer two-thirds, with alter- 

 nating annulations of golden-yellow and brown, their terminal 

 points dark brown. Face, ears, sub-caudal callosities, bright 

 reddish flesh-colour, deeper round the eyes. Length of the 

 body, 15-24 inches; tail 1^-2 inches. 



In the young the fur is hghter. When first born it is of 

 purely uniform brown, the annulations appearing and increas- 

 ing in number with advancing age. 



In a young Bornean specimen the sides, abdomen, and legs 

 are light chestnut colour; the tips of many of the hairs 

 golden, which with age changes more and more into blackish- 

 brown. The tail is 3}^ inches long, and extremely slender for 

 the last two-thirds of its length — a part easily lost in captivity. 



Tongue with numerous papillated glandular crypts for lubri- 

 cation of the cheek-pouches. Throat-pouch situated in an 

 excavated hollow in the hyoid bone, the pouch being con- 

 tinuous with the convergence of the vocal chords. 



Skull with strong inwardly projecting supra-orbital processes ; 

 external opening for the nostrils triangular. The anterior upper 

 incisors appear first, followed by the anterior pre-molar, the 

 median molar, the median pre-molar, and then the canines ; 

 anterior molar four-cusped ; anterior lower molar five-cusped. 

 Caudal vertebrae eleven in number. 



