Chap. Y. BARRIGUDO MONKEYS. 
319 
by being adapted to similar modes of life. The Loris 
and their relatives of Tropical Asia have six incisor teeth 
to the lower jaws, and belong, in all other essential 
points of structure, to the Lemur family, which has not 
a single representative in the New World. The Ei-as 
have teeth of the same number, and growing in nearly 
the same position, as their near relatives the Sai-miris. 
I obtained, moreover, yet stronger proof of this close 
relationship between the night and day monkeys of 
America, in finding a species on the Upper Amazons 
which supplies a link between them. This one had 
ears nearly as short as those of the night apes, and also 
a striped forehead ; the stripes being, however, two in 
number, instead of three : the colours of the body were 
very similar to those of the well-known Chrysothrix 
sciureus, and the eyes were fitted for day vision. 
Barrigiido Monkeys. — Ten other species of monkeys 
were found, in addition to those already mentioned, in 
' the forests of the Upper Amazons. All were strictly 
arboreal and diurnal in their habits, and lived in flocks, 
travelling from tree to tree, the mothers with their 
children on their backs ; leading, in fact, a life similar to 
that of the Pararauate Indians, and, like them, occa- 
sionally plundering the plantations which lie near their 
line of march. Some of them were found also on the 
Lower Amazons, and have been noticed in former chap- 
ters of this narrative. Of the remainder, the most 
remarkable is the Macaco barrigudo, or big-bellied 
monkey of the Portuguese colonists, a species of Lago- 
thrix. The genus is closely allied to the Coaitas, or 
spider monkeys, having, like them, exceedingly strong 
