_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.