24 SIMIADE. 
13. Cercopithecus Camphellii. B. M. 
Blackish olive, yellow-washed ; throat, thighs, belly, and inside of 
limbs whitish ; forehead and crown yellow-varied ; feet and outside 
of limbs and tail black. 
Cercopithecus Campbellii, Waterh. P. Z. S., 1838, p. 61! Martin, i. 
p. 544! C. Bummettii, Gray, Ann. § Mag. N. H. 1842, p. 256! 
Var. or adult. Larger, sides of the forehead yellow. B.M. 
Var. Tail greyish in the middle of its length. 
‘Hab. West Africa: Sierra Leone; Fernando Po, Thompson. 
14, Cercopithecus albogularis. B.M. 
Fur olive black, yellow-washed and yellow-grizzled; throat, 
chest, and inside of thighs white; outside of limbs and end of tail 
blackish ; tail like back at base, above and below. 
Semnopithecus? albogularis, Sykes, P. Z. S. 1831, p. 105! Cerco- 
pithecus albogularis, Owen, P. Z. 8.1832, p. 18! ©. monoides, Zs. 
Geoff. Arch. du Mus, ii. p. 31. 
Hab. East Africa. 
Like C. mona, but of a different colour below, and without the white 
streaks on the sides. 
15. Cercopithecus samango. 
Fur black, grey-grizzled; throat, chest, and inside of the thiglis 
yellowish white; outside of the limbs, and tip of the tail, blackish ; 
base and underside of tail whitish. 
Cercopithecus samango, Sundevall, K. Vetensk. Akad. Forh. 1844, 
p. 160; Hornschuch, Arch. Skand. Beitr. 1844, p. 179. 
Hab. South Africa. 
Very like C. albogularis, but grey, not washed with yellow, and 
tail white below.. 
See C. lunulatus, Temm. Esq. Zool. Guinea, p. 37. 
13. CHLOROCEBDUS. 
Head oval. Face rather produced. Whiskers rigid, directed back- 
wards. Fur grizzled; hairs annulated, greenish or reddish. 
When alive the scrotum is green in C. sabaus and C. pygerythrus, 
blue in C. cynoswrus ; but these colours are not seen in the preserved 
skins; therefore the colour of the serotum of some of the species de- 
scribed from stuffed skins is not known—as C. Lalandii, CO. Werneri. 
I. Face moderate, narrow in front, black. Chlorocebus. 
1. Fur red; frontal band black. Species 1. 
2. Fur greenish ; frontal band none, or white. 
