454 NATURAL HISTORY OF AFRICA. 
Simia troglodytes, chimpanse pongo, jocko, or 
orang-outang, which in its countenance and gene- 
ral aspect very much resembles the human species. 
It was formerly confounded with the orang-outang 
of Borneo, the Simia sati/rus of naturalists j but 
the orang-outang of Borneo is brown, and the 
great toes are without nails, whereas that of Afri- 
ca is black, and the great toes are provided with 
nails. It is said occasionally to attain a height of 
from five to six feet, and to be possessed of great 
strength. 
Africa abounds in baboons and monkeys. 
Several of the baboon tribe are remarkable for 
their great size, uncommon strength, disgusting 
manners, and ferocity 5 while the numerous spe- 
cies of the monkey tribe are more agreeably dis« 
tinguished by their lively and playful manners, 
and their great imitative powers. 
Order 2. Chiroptera^ 
Several species of the bat (yespertilio) tribes 
are met with in Africa 5 and some species, as the 
horhonims and nigrita^ are peculiar to this conti- 
nent. 
Order 3. Digitata. 
Several of the squirrel, or sciurus tribe, occur 
in Africa, and the following species are consider^ 
cd as peculiar to it : — 
