Habits.—Gregarious and diurnal; living in the high trees, and feeding on fruits, probably exclusively, the length of its intestines seeming to indicate that it is more of a vegetarian than its allies.
III. THE BALD UAKARÍ. BRACHYURUS CALVUS.
Brachyurus calvus, Is. Geoffr., C. R., xxiv., p. 576 (1847); id., Arch. Mus., v., p. 560 (1845); Castelnau, Expéd. Amér. Sud, Mammif., p. 17, pl. 4, fig. 1 (1855); W. A. Forbes, P. Z. S., 1880, p. 646; Beddard, P. Z. S., 1887, p. 119, pl. xii.
Ouakaria calva, Gray, Cat. Monkeys Brit. Mus., p. 62 (1870).
Pithecia calva, Schl., Mus. Pays Bas, vii., p. 228 (1876).
Pithecia alba, Schl., t. c. p. 229.
(Plate XVI.)
Characters.—Fur very long, straight, and shining from neck to tail. Face scarlet; top of head nearly bald, greyish, passing into brown anteriorly and at the sides, with bushy sandy whiskers meeting below the chin; throat dark brown, mixed with numerous black hairs, the general tint being rich chestnut-brown; back whitish-grey, with black hairs mixed with white ones, which are in greater number. Under surface fulvous brown, darker on the breast, where brown hairs are numerous; the same brown tinge is visible on the arms, legs, the hinder region of the thighs, at the wrist, and ankle, and especially on the tail; eyes reddish-yellow. Length, 18 inches.
Some species are paler than the above description, being pale sandy-white, slightly rufous below and on the inside of the limbs.
Cæcum 10 inches long along its greater curvature, and not sacculated.