ZOOGEOGRAPHICAL REGIONS 219 
going description, but some further details may be 
added. The region is almost equally characterized by 
the forms which are present, and by those which are 
absent. Among the Primates it possesses the gorilla 
and the chimpanzee, two peculiar forms confined, as 
we have seen, to a relatively small part of the con- 
tinent. Monkeys are represented by five peculiar 
genera with many species, lemurs by two or three 
genera and some eight species. Fruit-bats are fewer 
than in India. Insectivores are peculiar and primitive. 
Thus we have jumping-shrews, the aquatic potamogale 
and the golden mole, the latter believed to be allied 
to the curious tailless hedgehog or tenrec of Madagascar. 
Among the carnivores an interesting feature is the 
presence of two peculiar dogs, belonging to the two 
genera of Lycaon and Otocyon, the latter having very 
primitive teeth. We have already spoken of the 
absence of bears, and it is noticeable that the weasel 
alliance is scantily represented. 
So much has been already said of the ungulates (p. 129 
et seq.) that a few general statements may suffice. 
Goats and sheep are practically absent, and with one 
exception so are true pigs of the genus Sus, though wart 
hogs, bush pigs, river hogs, and the hippopotamus occur. 
There is no tapir and no camel, but rhinoceroses, 
elephants, chevrotains, and several kinds of horses 
occur, as well as the curious hyrax and peculiar forms 
like the giraffe and okapi; antelopes are abundant. 
In regard to the rodents a peculiar feature is the 
absence of the true flying squirrels and their replace- 
ment by the peculiar family of Anomaluridae (cf. p. 109). 
The Edentates are represented by the curious aard-vark 
(Orycteropus), as well as by pangolins. 
"The birds are not so abundant nor so beautiful as 
