[Illustration: BAY GUEREZA.]
{91}IV. THE BAY GUEREZA. COLOBUS FERRUGINEUS.
(_Plate XXXIII._)
_Simia ferruginea_, Shaw, Gen. Zool., i., p. 59 (1800); Desm., Mamm., p.
53 (1820); Fischer, Synops. Mamm., p. 13 (1829).
_Colobus ferrugineus_, Illiger, Prodr. Syst. Mamm., p. 69 (1811);
Gervais, H. N. Mamm., i., p. 66 (1854); Gray, P. Z. S., 1868, p. 181;
Schl., Mus. Pays-Bas, vii., p. 27 (1876); Rochebr., Faun. Sénég., Mamm.,
p. 25 (1883-5); Sclater, P. Z. S., 1890, p. 590, pl. xlviii.
_Colobus ferruginosus_, Geoffr., Ann. Mus., xix., p. 92 (1812); Martin,
Mammif. Anim., p. 498 (1841).
_Colobus temminckii_, Kuhl, Beitr., Zool., p. 7 (1820); Desm., Mamm., p.
53 (1820); Ogilby, P. Z. S., 1835, p. 99; Martin, _op. cit._, p. 499
(1841).
_Colobus pennantii_, Waterh., P. Z. S., 1838, p. 57; Martin, op. cit., p.
501; Geoffr., Dict. H. N., iv., p. 209 (1849); Gray, P. Z. S., 1868, p.
181, var. 2.
_Colobus ferruginea_, Less., Spec. Mamm., p. 68 (1840); Gray, Cat.
Monkeys Brit. Mus., p. 18 (1870).
_Colobus fuliginosus_, Ogilby, Cat. Mamm. Z. S., p. 97 (1839); Is.
Geoffr., Cat. Méth. Prim., p. 17 (1851); Temm., Esquiss. Zool., p. 24
(1853); Dahlb., Consp. Mamm. p. 95 (1857).
_Colobus rufo-fuliginosus_, Ogilby, Cat. Mamm. Z. S., p. 270 (1839).
_Colobus rufo-niger_, Ogilby, Cat. Mamm. Z. S., p. 273 (1839); Martin,
_op. cit._, p. 500 (1841); Gray, P. Z. S., 1868, p. 181, var. 1.
_Piliocolobus ferrugineus_, Rochebr., Faun. Sénég., Mamm. Suppl., p. 105,
pl. iii. (1887).
{92}_Piliocolobus bouvieri_, Rochebr., _tom. cit._, p. 108, pl. iv.
_Piliocolobus tholloni_, Rochebr., _tom. cit._, p. 110, pl. v.
CHARACTERS.--Body robust, covered with rather long hairs; face naked,
blackish-blue, except the tip of the nose, corners of the mouth and edge of
lower lips, which are flesh-colour; ears naked, blackish-blue; nose short
and somewhat prominent; frontal hairs erect, directed forward, black; top
and back of the head as far as the nape, black; back, sides, outer aspect
of the thighs, base and upper surface of the tail, bluish or olive-black,
with whitish hairs mingled on the shoulders and thighs; sides of the face
from the middle of the cheek backwards to a point behind (enclosing the
ears), neck, chin, and throat, the under surface of body, as well as the
whole of the limbs (except the outer aspect of the thighs), and the under
surface of the tail, rich rufous; tips of the fingers and toes black.
Length of body, 29 inches; of tail, 31 inches. The hairs are all uniformly
coloured. The thumb is often fairly well developed, and may have a nail.
This species is extremely variable in the coloration of its fur; the back
in some varieties is rufous, the cheeks and throat may be sandy-yellow or
white, and the under side whitish or white, and the outside of the
fore-limbs may be black, or agreeing in colour with the outside of the
thighs. The well-developed _foetus_ shows no signs of the varied coloration
of later life, but is quite white.
DISTRIBUTION.--West Africa. Not uncommon along the whole West Coast.
HABITS.--Like many of the other species of the genus, this species keeps to
the tops of the highest trees of the forest. Its food consists of fruits
and leaves.
{93}V. THE BLACK GUEREZA. COLOBUS SATANAS.
_Colobus satanas_, Waterhouse, P. Z. S., 1838, p. 58; Martin, Mammif.
Anim., p. 497 (1841); Gervais, H. N. Mamm., p. 65 (1854); Sclater, P. Z.
S., 1860, p. 246; Reichenb., Naturg. Affen, p. 88 (1862); Is. Geoffr.,
Dict. H. N., iv., p. 208 (1849); Gray, P. Z. S., 1868, p. 181; id., Cat.
Monkeys Brit. Mus., p. 17 (1870); Schleg, Mus. Pays-Bas, vii., p. 27
(1876); Matschie, S.B. Ges. Natur. Fr. Berlin (1892), p. 226.
_Semnopithecus anthracinus_, Leconte, Proc. Acad. Nat. Sci. Philad. 1857,
p. 10.
_Guereza satanas_, Truess. Consp. Mamm., p. 10 (1879).
_Stachycolobus satanas_, Rochebr. Faun. Sénég. Suppl. Mamm., p. 114, pl.
vii. (1887).
CHARACTERS.--Fur very long, coarse; face naked, black; ears rounded, black;
superciliary and frontal hairs very long; hairs of the cheeks long, very
coarse, and directed backwards; fur entirely and uniformly black on the
body and tail; hairs on tail short; tip not tufted. Length of body, 40
inches; of tail, 59½ inches.
DISTRIBUTION.--West Africa. Forests of Senegambia, Sierra Leone, Gaboon,
and the Congo. This is one of the commonest species in West Africa.