_Simia chiropotes_, Humb., Obs. Zool., i., p. 311 (1811). {188}_Simia sagulata_, Traill, Mem. Wern. Soc., iii., p. 167 (1821). _Brachyurus israelita_, Spix, Bras., Sim. et Vespert., p. II, pl. 7 (1823). _Pithecia chiropotes_, Geoffr., Ann. Mus., xix., p. 116 (1812); Scl., P. Z. S., 1871, p. 228; Schl., Mus. Pays Bas, vii., p. 223 (1876). _Brachyurus satanas_, Gray, List Mamm. Brit. Mus., p. 13 (1843). _Chiropotes sagulata_, Gray, Cat. Monkeys Brit. Mus., p. 60 (1870). CHARACTERS.--MALE.--Larger than _P. satanas_; black, with a reddish-chestnut patch on the back, with a coarse brownish beard, longer than in _P. satanas_; tail very thick, bushy. FEMALE.--Similar to the male, but without the beard. DISTRIBUTION.--Amazonia, Rio Negro, and Rio Branco; Upper Orinoco; British Guiana. HABITS.--This species is said to be solitary, or to go about only in pairs. It derives its scientific name from its habit of drinking by lifting the water to its head with its hands, instead of stooping down and applying its mouth to the water. It is difficult to tame, being fierce and ill-dispositioned. V. THE WHITE-NOSED SAKI. PITHECIA ALBINASA. _Pithecia albinasa_, Is. Geoffr. et Dev., C. R., xxvii., p. 498 (1848); id., Arch. Mus., v., p. 559 (1845); Gervais in Castelnau, Expéd. Am. Sud, ii., p. 16, fig. 2 (1855); Scl., P. Z. S., 1881, p. 258, pl. xxix. _Chiropotes albinasa_, Gray, Cat. Monkeys Brit. Mus., p. 61 (1870). (_Plate XVII._) PLATE XVII. [Illustration: THE WHITE-NOSED SAKI.] {189}CHARACTERS.--Uniformly, but rather sparingly, covered with black hairs. Face black, naked; nose broad and naked, and with a bright scarlet line down its bridge, broadening out on the latter and on the upper lip; tip of nose white, from the presence of a few white hairs. Long hairs on the head falling to all sides; tail long and clothed to the tip with long hairs hanging down from its under side, slightly prehensile. Length of the body, 15 inches; of the tail, 18 inches. DISTRIBUTION.--Amazonia. HABITS.--The White-Nosed Saki, which might much more appropriately have been called the "Red-Nosed Saki," is very rare; its habits are quite unknown. The type specimen in the Paris Museum remained unique in Europe from 1848 till 1881, when a living specimen was brought to the Zoological Gardens in London. THE HOWLERS. SUB-FAMILY MYCETINÆ.