HABITS.--This rare species is very active and gentle in confinement. It will hang suspended, as Martin observed in the first specimen brought to Europe, from a branch for the whole day, except when asleep or reposing. The type specimen was described in 1840,--its skin being preserved in the British Museum; but it was not till 1877--after a lapse of thirty-seven years--that a second specimen was brought to this country. It was sent to the Zoological Gardens by Mr. W. H. Newman, H.B.M. Consul at Bankok. IV. THE WHITE-HANDED GIBBON. HYLOBATES LAR. _Homo lar_, Linn., Mantiss. Plant., App., p. 521 (1771). _Simia longimana_, Wagner in Schreb. Säugeth. i., p. 66, pl. iii., figs. 1, 2 (1775); Erxl., Syst. Reg. An., p. 9 (1777). _Simia lar_, Bodd., Elench. An., p. 55 (1785); Fischer, Syn. Mamm., p. 12 (1829; in part). _Pithecus lar_, Latr., Hist. Nat. Buff., xxxvi., p. 276 (1809). _Pithecus varius_, Latr., _op. et loc. cit._ _Pithecus variegatus_, Geoffr., Ann. Mus., xix., p. 88 (1812). _Hylobates lar_, Illig., Abhandl. Akad. Berl., p. 88 (1815); Martin, Mammif. Anim., pp. 416, 433 (1841); Blyth, J. A. S. Beng., x., p. 838 (1841); Gray, Cat. Monkeys Brit. Mus., p. 10 (1870); Scl., P. Z. S., 1870, p. 86, pl. v.; Schlegel, Mus. Pays-Bas, vii., p. 15 (1876); Anders., Zool. Res. Exped. Yun-nan, p. 5 (1878; with full synonymy); Blanford, Faun. Brit. Ind., Mamm., p. 7 (1891). {160}_Hylobates variegatus_, Kuhl, Beitr. Zool., p. 5 (1820; young); Desmar., Mamm., p. 51 (1820); Is. Geoffr., Zool. Bélang. Voy., p. 27 (1834). _Simia albimana_, Vig. et Horsf., Zool. Journ., iv., p. 107 (1828). _Simia variegatus_, Fischer, Syn. Mamm., p. 11 (1829). _Hylobates albimanus_, Is. Geoffr., Zool. Bélang. Voy., p. 29 (1834). _Hylobates entelloides_, Is. Geoffr., C. R., xv., p. 717 (1842). _Hylobates leuciscus_, Cantor, Ann. and Mag. N. H., xvii., p. 338 (1846). CHARACTERS.--MALE.--Everywhere deep black, except the face, which is reddish-brown, with the thick hair round it light grey or white, and the hands and feet, which are pale yellow or white; superciliary ridges, whiskers and beard, white. The hair on the fore-arm is nearly erect, with only a very slight forward inclination. The species is subject to great variation, and may be of all shades, from deep black to entirely whitish-yellow (_H. entelloides_). Head round; the eyes large; the cheeks flat and depressed; the nose slightly projecting, its tip furrowed, and its nostrils small and converging; the upper lip is divided in the centre by a vertical furrow. In very young individuals the top of the ear is markedly pointed. Skull with the orbital ridges larger, the muzzle shorter, and the teeth smaller than in _H. hoolock_; the second and third toes sometimes united by a membrane. FEMALE.--Generally similar to the male, but more frequently entirely pale yellow, with the hands and feet paler.