Forms of Cercopithecus crnd Graphiurus. 233 



Size and general proportions rather less than in C. kolbi. 

 Hair similar in texture, but a good deal shorter, measuring 

 only about 43 mm. in length on the back, while in the 

 type of G. kolbi the coat is very much longer, the hairs 

 averaging about 70 mm. in length. General colour of dorsal 

 surface more or less like that of G. kolbi, but much duller, 

 especially on the rump and posterior part of back. Anterior 

 portion of back, between shoulders, black speckled with 

 greenish buff, the buff tint becoming more dominant towards 

 the hind-quarters. General colour of rump and posterior 

 part of back yellowish brown (between snuff- brown no. 1 

 and chamois no. 4, 'Repertoire de Couleurs'), strikingly 

 different from the rich reddish colour on the back of C. kolbi. 

 Individual hairs of rump pure greyish white at roots, turning 

 to brownish grey towards the middle; apical portion com- 

 posed of four buff-coloured bands alternating with four black 

 bands, the terminal black bands constituting the hair-tips. 

 Hair on forehead and top of head shorter and darker than in 

 G. kolbi, the buff-coloured annulatious on the hairs a good 

 deal less prominent. Cheeks and sides of head clothed with 

 comparatively short, greyish black hairs, slightly tinged with 

 buff. Face, between eyes, sparsely covered with short black 

 hairs. White ear-tufts present, but rather short, measuring 

 only about 20 mm. in length, while in the type of G. kolbi the 

 ear-tufts are nearly 30 mm. long. White patches on sides of 

 neck arranged so as to form a more or less definite collar, ex- 

 tending upwards, on each side, on to the nape or summit of the 

 neck, though this collar-like pattern is a good dexl smaller and 

 less conspicuous than in the Kenia form. Fore limbs brownish 

 black; hairs grey, with black tips. The grey speckling of 

 the dorsal surface extends for a short distance down the fore 

 limbs, though not to such a marked extent as it does in 

 G. kolbi. Hind limbs brownish black, speckled with grey; 

 bases of hairs brownish grey, tips dark brown, banded with 

 three or four greyish rings. Backs of hands and feet 

 brownish black. Under surface of body thinly clothed with 

 short greyish hairs, faintly speckled with silvery grey, quite 

 different from the long dark grey hair on the belly of G. kolbi. 

 Individual hairs of belly with greyish white bases, tips rather 

 darker and banded with a \'ew light grey annulatious. White 

 band across chest and throat not nearly so prominent as in 

 C, kolbi, the hairs both shorter and less numerous. Chin 

 sparsely covered with short white hairs. Tail similar to 

 that ot the Kenia species, but the hairs are rather shorter and 

 the buff coloration of the rump (Iojs not extend down the 

 dorsal surface for more than a few inches. 



