Part 39

DISTRIBUTION.--U. S. Colombia; vicinity of Bogotá.

HABITS.--This species is arboreal, like the other members of its genus, and it is said to be nocturnal. It spends the day rolled up very much as many of the Lemurs do.

VII. THE MASKED TITI. CALLITHRIX PERSONATA.

Callithrix personatus, Geoffr., Ann. Mus., xix., p. 113 (1812); Spix, Sim. et Vespert. Bras., p. 18, pl. 12 (1823); Gray, Cat. Monkeys Brit. Mus., p. 56 (1870).

Callithrix brunnea, Wagner, Arch. f. Naturg., 1842, i., p. 357 (ex Natterer, MSS.).

Pithecia melanops, Vigors, Cat. Coll. Zool. Soc., p. 6.

Callithrix personata, Schl., Mus. Pays. Bas, vii., p. 231 (1876).

CHARACTERS.--Size larger than that of the other Titis. Style of fur the same as in the previous species, but longer, and the long stiff hairs more bristly; general colour black, mottled with grey rings on the hairs; back grizzled grey; entire head, hands, feet, and lower part of limbs, black; chest, under side of the body, and tail dark ashy-grey, the latter washed at the base, sometimes extensively, with rufous, and grey towards the tip below.

FEMALE.--Body strongly washed with whitish-yellow, and the tail with rufous; forehead between the ears, black.

{164}DISTRIBUTION.--Upper Amazon. Of all the species of the genus, this ranges furthest to the south--to 14° S. lat.

VIII. THE BLACK-FRONTED TITI. CALLITHRIX NIGRIFRONS.

Callithrix nigrifrons, Spix, Sim. et Vespert. Bras., p. 21, pl. 15 (1823); Gray, Cat. Monkeys Brit. Mus., p. 56 (1870); Schl., Mus. Pays Bas, vii., p. 232 (1876).

CHARACTERS.--Nearly allied to the Masked Titi (C. personata), but distinguished by the nearly white back of the head and nape of the neck, and by the hairs at the base of the tail being entirely red.

DISTRIBUTION.--Upper Amazonia.

IX. THE RED-BELLIED TITI. CALLITHRIX CASTANEIVENTRIS.

Callithrix castaneoventris, Gray, Ann. and Mag. N. H., xvii., p. 58 (1866); id., Cat. Monkeys Brit. Mus., p. 56 (1870).

Callithrix caligata, Wagner, Arch. f. Naturg., 1842, i., p. 454 (ex Natterer, MSS.); Schl., Mus. Pays Bas, vii., p. 237 (1876).

CHARACTERS.--Fur of the same nature as in C. cuprea, black, ringed with grey; face grizzled, whiskers, throat, chest, under side of the body, and inner surface of the limbs reddish-chestnut; outside of the limbs grizzled, washed with rufous; forehead, hands, feet and tail black; tip of the tail paler.

DISTRIBUTION.--Paraguay and Brazil; Borba, Rio Madeira.

The two following species may be distinguished from those already described by having their soft woolly fur entirely free from the long bristly hairs, which were dispersed through the fur of the others.

{165}X. THE BLACK-HANDED TITI. CALLITHRIX MELANOCHIR.

Callithrix melanochir, Neuwied, Beitr., ii., p. 114, et Abbild., iv.; Gray, Cat. Monkeys Brit. Mus., p. 57 (1870); Schl., Mus. Pays Bas, vii., p. 233 (1876).

CHARACTERS.--General colour red, but the crown of the head, the throat, and inner side of the limbs, mixed black and grey; the hands and feet black.

DISTRIBUTION.--This species has been recorded from Bahia, on the east coast of Brazil.

XI. THE GREY TITI. CALLITHRIX GIGOT.

Callithrix gigot, Spix, Sim. et Vespert. Bras., p. 22, pl. 16 (1823); Schl., Mus. Pays Bas, vii., p. 234 (1876); Weldon, P. Z. S., 1884, p. 6.

Callithrix gigo, Gray, Cat. Monkeys Brit. Mus., p. 57 (1870).

CHARACTERS.--Hair about two inches long, soft and slightly woolly over the trunk; hair on the forehead shorter and more thickly set; that over the limbs short and loose. General colour of the back reddish-grey behind, more ashy over the forehead and limbs; the hair black at the base, cream-coloured further up, the tips ringed with chestnut and black. Muzzle and chin black, with a few short, strong, white hairs; a black line along the nose and round the eyes; the eyelids white; the eye-lashes and long eye-brows black; forehead thickly covered with loose grey hairs, slightly tipped with black; a faint ridge across the brow between the ears; the ears black, covered with soft black hairs, except for a small grey tuft at their hind outer angle. In front of the ears a light grey band over the cheeks, continued above on to the forehead, below to the chest; throat naked, light pink; under surface {166}of the limbs pale grey; the hands and feet black; tail red, the hair bushy at its base. Length of the body, 14 inches; of the tail, 13½ inches. (Weldon.)