224 ALLEN’S NATURALIST’S LIBRARY. 
Lagothrix poeppigit, 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 castelnaut, 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); SclL, 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 sur- 
face 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 de- 
stroyed annually for this purpose. ‘ 
THE WOOLLY SPIDER-MONKEYS. GENUS BRACHYTELES 
Brachyteles, Spix, Sim. et Vespert. Brazil, p. 36 (1823). 
Eriodes, 1s. Geoffr., Dict. Class., xv., p. 143 (1829). 
The members of this genus resemble in general form the 
