III. THE WHITE-CHESTED TITI. CALLITHRIX AMICTA.
_Simia amicta_, Humboldt, Obs. Zool., i., p. 357 (1811).
_Callithrix amicta_, Spix, Sim. et Vespert. Bras., p. 19, pl. xiii. (1833).
_Callithrix amictus_, Geoffr., Ann. Mus., xix., p. 114 (1812); Gray, Cat. Monkeys Brit. Mus., p. 54 (1870).
_Callithrix torquata_, Schl., Mus. Pays Bas, vii., p. 235 (part, 1876).
CHARACTERS.--Agrees with the last species in the character of the fur; but the general colour is black, washed with rufous; the forehead is black; the chest has a pure white spot; the hands are white, but the feet black; the tail has the hairs entirely black throughout.
IV. THE REED TITI. CALLITHRIX CINERASCENS.
_Callithrix cinerascens_, Spix, Sim. et Vespert. Bras., p. 20, pl. 14 (1823).
_Callithrix donacophilus_, d'Orb., Voy. Amér. Sud, iv., p. 10, pl. 5 (1826); Gray, Cat. Monkeys Brit. Mus., p. 55 (1870).
_Callithrix donacophila_, Geoffr., Cat. Méth. Primates, p. 41 (1851); Schl., Mus. Pays Bas, vii., p. 240 (1876).
{ 162}CHARACTERS.--Fur long and similar in character to that of _C. torquata_; chest and under side of body pale grey or dark reddish-grey; hands and feet grey; back of the same colour; tail mottled grey,--the hairs being grey, with black tips.
In some species the fur varies from dark grey washed with rufous, to almost white, the red wash, where it occurs, sometimes deepening, or almost vanishing.
DISTRIBUTION.--Mr. Bates observed this species at Serra dos Parentins, in the Lower Amazon Region above the confluence of the Tapajos with the Amazon. It also extends to Bolivia and Peru.
_Cebus moloch_, Hoffman, Mag. Gesell. Berlin, x., p. 97 (1807).
_Callithrix moloch_, Geoffr., Arch. Museum, iv., p. 33, pl. 3(1844), id., Ann. Mus., xix., p. 114 (1812); Gray, Cat. Monkeys Brit. Mus., p. 55 (1870).
CHARACTERS.--Differs from the Reed Titi in having the cheeks, chest, and belly red. Hands and feet of the same colour as the back, grey.
The cerebral convolutions of this animal are, according to M. C. Dareste, exactly those of a "Maki," or _Lemur_.
_Callithrix discolor_, Verreaux, M.S. (nec Geoffr.).
_Callithrix ornata_, Gray, Ann. and Mag. Nat. Hist., xvii., p. 57 (1866).
_Callithrix ornatus_, Gray, Cat. Monkeys Brit. Mus., p. 55 (1870).