Distribution.—Bolivia.

IV. THE SMOOTH-HEADED CAPUCHIN. CEBUS MONACHUS.

Cebus monachus, F. Cuv., Hist. Nat. Mammif., livr. xix. (1820).

Le Saï a grosse tête, male, F. Cuvier, loc. cit.

Cebus xanthocephalus, Spix, Sim. et Vespert., Bras., p. 6, pl. 3 (1823); Gray, Cat. Monkeys Brit. Mus., p. 50 (1870).

Cebus cucullatus, Spix, t. c. p. 9, pl. 6 (1823).

Cebus olivaceus, Wagner in Schreb. Säugeth., Suppl., v., p, 87, pl. 8 (1855).

Cebus variegatus, Schl., Mus. Pays Bas, vii., p. 208 (1876).

(Plate XIX.)

Characters.—Fur soft and stiff. Head large and round covered with short recumbent hairs. Face naked, pale round the prominent eyes; muzzle sharp, and of the same colour as that which surrounds the eyes; forehead, temples, throat, chest, under surface of body, sides of jaws, and front of arms, pale orange-yellow; outer side of arms, pale orange, washed with white; fore-arms, rump, hind-limbs, and tail black; a mixture of black and brown, expanding irregularly into spots on the yellow, covering the back, shoulders, and sides of body; a spot on the crown, black; a superciliary ridge forming a band of whiskers extending down the cheeks, and meeting under the chin, also black. Hands naked, violet, almost black.