Simia maura, Raffles (nec. Schreb.), Tr. Linn Soc., xiii., p. 247 (1822).
Semnopithecus femoralis, Horsf. App. Life Raffl., p. 643 (1830); Martin, Mammif. An., p. 480 (1841; in part); Horsf., Cat. Mamm. E. I. Co. Mus., p. 10 (1851); Schl., Mus. Pays-Bas, vii., p. 45 (1876); Anderson, Zool. Res. Exped. Yun-nan, p. 30 (1878; with full synonymy); Thomas, P. Z. S., 1886, p. 66; Blanford, Faun. Brit. Ind., Mamm., p. 42 (1891); Hose, Mamm. Borneo, p. 13 (1893).
Semnopithecus chrysomelas, Müll. Tijds., Nat. Ges., v., p. 138, plate (1838); Wagner, in Schreb., Säugeth. Suppl., v., p. 22 (1855; in part).
Semnopithecus sumatranus, Müll. und Schl. Verh., pp. 6, 73, pl. 10 bis, fig. 1 (1839-44).
Simia femoralis, Cantor, J. A. S. Beng., xv., p. 175.
Characters.—Head with a rather short vertical crest directed backward, and the hair in front directed forward over the eyes. The dominant colour is brownish-black, replaced by white on the hinder part of the belly and tail, which is slightly tufted at the tip, and more or less on the inner side of both limbs, and on the centre of the chest. Face, ears, palms, and the sides of the feet, black.
Young.—Similar to the adults, but the throat, chest, abdomen, yellowish-white.
Distribution.—The islands of Sumatra and Borneo.
Habits.—This is a low-country Monkey, according to that excellent observer Mr. C. Hose, and is seldom to be found on the mountains, and then only up to about 1,000 feet. It is fond of living near the seashore, and is generally found, in numbers of from ten to thirty, sitting on the branches of tall trees in open spaces. Its Dyak name is "Bigit," and its Kayan name "Pant."
Very nearly related to this species, if indeed it be really distinct, is the GOLDEN LANGUR, or Lootoong of the Malays, S. auratus, Geoffr. (Ann. Mus., xix., p. 93, 1812), which is synonymous with the S. chrysomelas of Wagner, for the two agree in every respect except that the latter is lighter coloured, and has black hairs intermixed among the yellowish hairs on its head, tail, and limbs.