ORDER QUADRUMANA. 209 



are of an ash-colour. It has scarcely any fore- 

 head, and the cranium is of a retreating form, 

 more developed in the posterior region. It has 

 slight callosities on the buttocks. This animal 

 inhabits the East Indies. 



The Ash-coloured or Silvery Gibbon, also called the 

 Woo Wou. (Simia Leucisca, Schreber, Moloch, Aude- 

 bert, Fam. i. sec. n. pi. ii.) 



Like the preceding, but covered with a soft 

 and silvery wool. The face is black. It is com- 

 mon to Java and the Moluccas, where it usually 

 lives among the reeds and climbs upon the 

 highest branches, balancing itself on them by 

 its long arms. 



In the other apes, or orangs, the arms descend 

 no farther than the knees, they have no forehead, 

 and the cranium retreats immediately behind the 

 crest of the eyebrows. 



The Chimpanse, {Simia Troglodytes, Linn J 



Covered with black or brown hairs, less thickly 

 in front. If we can trust to the relations of 

 travellers, this animal approaches or even sur- 

 passes the human stature. But we have not 

 yet seen in Europe any specimen confirmatory 

 or even indicative of the truth of this assertion, 



