THE GUENONS. 47 



taking food out of his hand seemed pleased, and gently played 

 with his fingers without attempting to bite." 



IV. buttikofer's guenon. cercopithecus buettikoferi. 

 Cercopithecus buettikoferi^ Jentink, Notes, Leyd. Mus., viii., p. 56 

 (1886) ; Sclater, P. Z. S., 1893, p. 244. 



Characters. — Biittikofer's Guenon agrees in all respects with 

 C. petaurista^ but wants the black band from ear to ear round 

 the vertex. Of this band " there is no trace, in a series of eight 

 specimens, containing adults and young, males and females " 

 {fentink). Irides brown. 



Distribution. — West Africa : Liberia. 



V. martin's guenon. cercopithecus martini. 

 Cercopithecus inartini, Waterh., P. Z. S., 1838, p. 58; 1841, p. 



71 ; Martin, Mammif. Anim., p. 542 (1841); Gray, Cat. 



Monkeys Brit. Mus., p. 21 (1870) : Scl, P. Z. S., 1884, p. 



176, pi. xiv. ; 1893, p. 245. 

 Cercopithecus nictitafis^ Schl., Mus. Pays-Bas, vii., p. 89 (1876). 



Description. — Allied to C. petaurista. Fur tolerably long and 

 but loosely applied to the body. Face naked ; whiskers 

 bushy ; beard short ; tail very long ; callosities small. Length 

 of body (type specimen), 22 inches ; tail, 26. Length of a 

 female, 19 inches ; tail, 24. General colour of head, back, and 

 upper side of the basal part of the tail olive-green, distinctly 

 annulated, the hairs being grey at their base, ringed above 

 with several bars of yellowish-green and black. Face blue; 

 nose-spot, commencing in the middle of the ridge, and extend- 

 ing over its sides and the upper and lower lips, yellowish- 

 white; a black line extending up the ridge of the nose from 

 the end of the white spot to the brow and encircling the eyes ; 



