Ashen-gray is the colour of the skin of the Mourning Gibbon (_Hylobates funereus_) on the external sides of his limbs, while the belly and contour of the face, and the inner parts, are of a blackish hue. The _Hylobates cinereus_ is of an uniform cindery-gray. He inhabits the Sunda Islands, and principally Java, and numerous individuals of his species have been imported into Europe. His disposition is gentle and affectionate; he quickly familiarizes himself with the persons who approach him. * * * * * The genus Chimpanzee (_Pithecus troglodytes_) is by some later naturalists preferred to that foremost place among the Quadrumana in which Cuvier had installed the orang-outang. He certainly approaches the nearest--though _longo intervallo_--to man, of all his race. He was long confounded with other Anthropomorphous genera, under the vague name of "Man of the Woods" (_Homo sylvestris_). It would appear to have been the Chimpanzee that Buffon had in his "mind's eye" when describing his Jocko; although that ideal variety of shaggy men, with flat, oval visage, long legs, tall and erect figure, which stands before us in the great naturalist's pages, bears but little resemblance to the animal we have seen in the Zoological Gardens, or the more faithful and judicious portrait drawn by modern travellers. But the name of Jocko is evidently a corruption of that of _Enge-eko_, which the negroes of the Gaboon bestow upon the Chimpanzee, just as the latter appellation is an imperfect reproduction of that of _Quimpezé_, in use among the negroes of Angola. Putting aside these speculations, we see that the only well-defined species of this genus is the black Chimpanzee (_Troglodytes niger_ of the present nomenclature, _Pygmea_ of Tyson). His home is the forests of the Gaboon, the coast of Angola, and Guinea. His face is larger and flatter than that of the orang. He has large ears, but shaped like those of men. On the head, shoulders, and back, he wears a coat of long black hair; his legs are short, and his arms very long; yet he is better able to walk like a biped than the macaucos, or even the orangs and the gibbons. Of all the Simidæ, he alone has calves to his legs. He has neither tail, ischiatic callosities, _abajoues_, nor thyroïdian pouch. The hair of his head is parted on the summit, and falls down on either side, surrounding the ear and jaws, and mingling with that of the neck. His bare, wrinkled face is of a light copper colour; so are the palms of his hands, and his fingers, but his nails are generally black.