_Gastrimargus infumatus_, Spix, Sim. et Vespert., Bras., p. 41, pl. 29
(1823).
{224}_Lagothrix poeppigii_, Schinz, Synops. Mamm., i., p. 71 (1844);
Pucher., Rev. et Mag de Zool., p. 299 (1857); Schl., Mus. Pays Bas, vii.,
p. 164 (1876).
_Lagothrix geoffroyi_, Schinz, Synops. Mamm., i., p. 72 (1844).
_Lagothrix castelnaui_, Is. Geoffr. et Deville, C.R., xxvii., p. 498
(1848); Casteln., Voy. Amér. Sud, Zool., p. 5, pl. 1.
_Lagothrix infumatus_, Gray, Cat. Monkeys Brit. Mus., p. 46 (1870); Scl.,
P. Z. S., 1871, p. 219 (Note).
CHARACTERS.--Large in size; face naked, black; general colour dark
reddish-grey, the hairs being reddish-brown at the base, and tipped with
grey or black; head, face and hind hands darker brown; chest, upper side of
fore-arms, and under surface of body dark brown, or almost black; sides of
body, base of the tail and perineal region brownish-red; hair of chest and
under surface long and rather rigid.
DISTRIBUTION.--The Brown Lagothrix, also called "Capparo" by Humboldt, is
common in the forests of the low country over the whole of the Valley of
the Peruvian Amazons. It has been recorded from the Valley of the Copataza
river, and also from Macas, both in Cis-Andean Ecuador.
HABITS.--These Monkeys go about in pairs, in troops of about twelve to
fourteen, and frequent the great forest trees. They are often found in
company with species of other genera, such as the Howlers. They are
exclusively fruit-eaters, and are in great request as food; large numbers,
consequently, are destroyed annually for this purpose.