_Semnopithecus rubicundus_, Müller, Tijdschr., Nat. Gesch., v., p. 137,
_cum_ tab. (1838); Martin, Mammif. An., p. 473 (1841); Gray, Cat. Monkeys
Brit. Mus., p. 17 (1870); Anderson, Zool. Res. Exped. Yun-nan, p. 33
(1878; with synonymy); Schl., Mus. Pays-Bas, vii., p. 36 (1876); Hose,
Mamm. Borneo, p. 9 (1893).
CHARACTERS.--Differs from _S. rubicundus_ in its rich deep maroon-red
colour, the radiating hair on the forehead, and its compressed, semi-erect,
crest. As Dr. Anderson points out, it is the only species with radiating
hair on the forehead.
HABITS.--Mr. Hose observes: "This handsome red Monkey is called by the
Dyaks of Sarawak, 'Jellu merah,' and by the {129}Kayans 'Kaladi,' and is
common everywhere. It is usually seen in large numbers, and some thirty or
forty often pass one in the jungle, darting from branch to branch and
making a tremendous noise. They will sometimes, when barked at by a dog,
attack it and inflict a very bad bite. They ascend the mountains to the
height of 3,000 feet; but at that height the colour of their hair becomes
of a much deeper red. They are very destructive in the fruit gardens."