"This animal inhabits the range of mountains that traverse the
interior of Guinea from the Cameroon in the north to Angola in the
south, and about one hundred miles inland, and called by the
geographers Crystal Mountains. The limit to which this animal extends,
either north or south, I am unable to define. But that limit is
doubtless some distance north of this river [Gaboon]. I was able to
certify myself of this fact in a late excursion to the head-waters of
the Mooney (Danger) River, which comes into the sea some sixty miles
from this place. I was informed (credibly, I think), that they were
numerous among the mountains in which that river rises, and far north
of that.

"In the south, this species extends to the Congo River, as I am told
by native traders who have visited the coast, between the Gaboon and
that river. Beyond that, I am not informed. This animal is only found
at a distance from the coast in most cases, and, according to my best
information, approaches it nowhere so nearly as on the south side of
this river, where they have been found within ten miles of the sea.
This, however, is only of late occurrence. I am informed by some of
the oldest Mpongwe men that formerly he was only found on the sources
of the river, but that at present he may be found within half a day's
walk of its mouth. Formerly he inhabited the mountainous ridge where
Bushmen alone inhabited, but now he boldly approaches the Mpongwe
plantations. This is doubtless the reason of the scarcity of
information in years past, as the opportunities for receiving a
knowledge of the animal have not been wanting; traders having for one
hundred years frequented this river, and specimens, such as have been
brought here within a year, could not have been exhibited without
having attracted the attention of the most stupid."