APES AND MONKEYS. 
158 
animals are more grey. Another form, which has been regarded as a distinct 
species by some zoologists, differs from the above variety in having grey fur on the 
head. Mr. Bates states that both these monkeys live together in the same places, 
and are probably only differently coloured individuals of one and the same species. 
I 11 one of the largest examples obtained by that traveller, the length of the head 
and body was 27, and that of the tail 26 inches; these dimensions only being 
exceeded among the American monkeys by the black howler, whose head and body 
may measure 30 inches in length. 
Mr. Bates observes that in Humboldt’s lagothrix the skin of the face “ is black 
and wrinkled, the forehead is low, with the eyebrows projecting; and, in short, the 
features altogether resemble, in a striking manner, those of an old negro. In the 
forests the barrigudo is not a very active animal; it lives exclusively on fruits, and 
is much persecuted by the Indians, on account of the excellence of its flesh as food. 
From information given me by a collector of birds and mammals, whom I employed, 
and who resided a long time among the Tucana Indians, near Tabatinga, I cal¬ 
culated that one horde of this tribe, two hundred in number, destroyed twelve 
hundred of these monkeys annually for food. The species is very numerous in the 
forests of the higher lands, but owing to long persecution, it is now seldom seen in 
the neighbourhood of the larger villages. It is not found at all on the Lower 
Amazon. Its manners in captivity are grave, and its temper mild and confiding, 
like that of the coaitas [spider-monkeys]. Owing to these traits the barrigudo is 
much sought after for pets; but it is not hardy like the coaitas, and seldom survives 
a passage down the river to Para.” 
From the account given by Mr. Bates as to the partiality displayed by the 
Indians of the Upper Amazon for this monkey as an article of food, it would seem 
that it is the one referred to in Humboldt’s narrative of the roasted monkeys at 
Esmeraldas, quoted on p. 149. 
The Woolly Spider-Monkeys. 
Genus Eriodes. 
The woolly spider-monkeys form a kind of connecting link between the woolly 
monkeys on the one hand, and the true spider-monke} r s on the other; having the 
woolly under-fur of the former, but the slender build of the latter, while their 
thumbs are rudimentary. They differ, however, from both in that their nails are 
extremely compressed from side to side, and sharply pointed at the ends; while the 
partition between the nostrils is narrower. 
Not much appears to be known of these monkeys, which have never been 
represented in the collection of the Zoological Society. They are confined to South- 
East Brazil; and have been divided into three species, mainly according to the 
degree of development of the thumb. The late Dr. Gray was, however, of opinion 
that these are merely varieties of a single species (Eriodes arachnoides), since 
some individuals have a rudiment of a thumb on one hand and not a trace of one 
on the other. In the typical variety, as represented in our illustration, the general 
colour is ashy brown, often tending to ferruginous at the base of the root of the 
