[Illustration: WHITE CROWNED MANGABEY.]
{39} _Cercopithecus æthiops_, Kuhl. Beitr. Zool., p. 97 (1820, nec _S.
æthiops_, Linn.).
_Cercopithecus æthiopicus_, F. Cuvier, Mamm., livr. xxxv. (Dec., 1821).
_Cercocebus collaris_, Gray, List Mamm. Brit. Mus., p. 7 (1843); id.,
Cat. Monkeys Brit. Mus., p. 27 (1870); Schl., Mus. Pays-Bas, p. 96
(1876.)
CHARACTERS.--Hair on the crown of the head not elongated, but directed
backward; whiskers small, directed backward; no beard. Face, ears, hands,
and callosities nude; tail long, carried over the back.
Face, ears, and hands black; the top of the head rich reddish-brown; whole
of upper side of the body, hinder part of the shoulders, back, external
surface of both pairs of limbs, feet, and tail, greyish slate-colour;
throat, breast, whole under side of the body and inside of the limbs white,
as are the nape of the neck, sides of the face, the fore part of the
shoulder, and the front aspect of the arms, as far as the top of the
fore-arm; in many species a somewhat broad wash of slate-grey crosses the
side of the face from the cheeks to below the ear.
DISTRIBUTION.--West Coast of Africa.