47 
If the word “ Pongo” be of African origin, it is probably a 
corruption of the word Mpongwe, the name of the tribe on 
the banks of the Gaboon, and hence applied to the region 
Fia. 10.—The Gorilla, after Wolf. 
they inhabit. Their local name for the Chimpanzee is 
Enché-eko, as near as it can be Anglicized, from which the 
common term “Jocko” probably comes. The Mpongwe 
appellation for its new congener is Engé-ena, prolonging 
