THE GUENONS. 



45 



circling the crown behind, black; a pencil of hair below the ears 

 directed backward, white; throat, chest, under side of body, 

 inside of limbs and under side of tail white ; posterior aspect 

 of fore-arms and legs grey, washed with olive ; naked parts of 

 chin, ears, and hands purplish-black. 



Distribution. — West Africa : Gold Coast and Sierra Leone. 



Habits. — The Ascagne, as this animal is also named, is the 

 most common of the Guenons seen in menageries. It is gentle, 

 graceful, and lively. They are perpetually in motion, " gambol- 

 ling with their companions, and pursuing or being pursued by 

 them, in the exuberance of playfulness. They are at the same 

 time docile and familiar, but dislike to be taken hold of, or 

 interfered with." {Martin.) Allamand says that his specimen, 

 which was in general very gentle, became angry when inter- 

 rupted while eating, or if it was gibed at, but its irritation did 

 not last long. 



II. jentink's guenon. cercopithecus signatus. 

 Cei'copithecus signatus^ Jentink, Notes, Leyd. Mus., viii., p. 55 

 (1886); Sclater, P. Z. S., 1893, p. 257. 



Characters — Very similar to C. petaurista. Sides of head 

 grizzled — the hairs ringed with white, yellowish, and black — 

 and separated abruptly from the reddish upper portion of the 

 head by a black band from ear to ear over the orbits, but not 

 running round the vertex ; ears somewhat larger than in C. 

 petaiirhta. 



Cranial portion of skull higher, and the facial portion more 

 produced than in C. petaurista ; the jaws longer, and the 

 orbits rounder and wider. 



Distribution. — Supposed to be from West Africa, but its 

 habitat is not known with certainty. 



