700 Mil. R. I. POCOCK — A REVISION OF [June 18, 



h'. No red on the bead. 

 d. A conspicuous white collar extending over the sides of the 

 neck on to its dorsal area, its two extremities only 

 separated by a narrow area of iron-grey speckled hair ... kolhi. 

 d'. Collar less conspicuous ; when present, not reaching the 

 dorsal area of the neck. 

 e. Dorsal area of lumbo-sacral region speckled chestnut- 

 red, and sharply contrasted with the speckled stone- 

 grey tint of the sides; summit of head noticeably 



darker than the shoulders and cheek violoiiei/r. 



e'. Coloured hairs on the body either extending all over 

 the sides, or when restricted to the dorsal surface 

 set off laterally and on the shoulder liy very dark 

 speckled hairs; head not darker than .■^boulders or 

 cheeks. 

 f. Hairs on ear mostly black ; black hairs on nose and 

 upper lip; coloured area of back speckled dark 



rusty brown ; prevailing colour smokj' grey preussi. 



f. Hairs on ear whitish or red : coloured area of back 

 yellower; no black bail's ou nose or lip. 

 cf. Hairs on ear decidedly red ; coloured area of body 



restricted to dorsal region frav cesctr. 



g. Hairs on ear whitish ; coloured area extending all 



over sides alhogvlaris. 



Cercopitheclts albogularis iSykes. 



Se'mno2nthecus ? albogularis Sykes, P. Z. S. 1831, p. 106. 



Cerccpithecus albigularis Sykes, P. Z. S. 1832, p. 18. 



Cercopitliecus erythrarchus Peters, Reise MossHmb.. Savigeth. p. 1, 

 pi. i., 1852. • 



S 5 adult. — Hend, cheeks, and dorsal area between slioulders 

 speckled black and grey, the liead only a little darker than the 

 cheeks. Behind the shoulders the grey in the hairs is gradually 

 I'eplaced by yellow, the entii-e lumbar and sacral regions being 

 uniformly washed with that coloui-, which spreads also on to the 

 sides of the body and the root of the tail. Arms not wholly black, 

 speckled close to shoxilder and along the I'adial side of forearm. 

 Legs dark ashy grey, thickly speckled ; hands and feet quite black. 

 Chin, throat, inner side of upper arms and of legs dirty greyish 

 white. The rest of the ventral surface, which is of a darker grey, 

 practically unspeckled in the female. In the male the under 

 side is densely speckled, the inner side of the thighs and pubic 

 area and the throat remaining unspeckled. Tail mostly black, 

 speckled with yellow at base, then for a short distance with grey, 

 the rest black. Root of tail and ischio-pubic region in male 

 without red hairs. In the female the root of the tail and the 

 sides of the callosities rusty red. The young of both sexes 

 resembles the female in this respect, and also in having the whole 

 of the under side greyish white and unspeckled, but differs from 

 the adults of both sexes in having some almost Avholly red hairs 

 upon and close to the i-oot of the tail above and the backs of 

 the thighs faintly tinged with red. In these respects they recall 

 C. stair si. 



Loc. (Southern ISTyasaland : Zomba (^4 . /S'A«r^:»e) ; Blantyre (i5. Z. 



