492 Savage and Wyman, External Characters, 
place in systems of Zoology. But this is accounted for by the 
fact that its immediate habitat is back some distance from the 
coast, and its habits and ferocity such that it is not often en- 
countered. "The natives stand greatly in fear of it, and never 
attempt its capture except in self-defence. 
If the word * Pongo' be of African origin it is probably a 
corruption of Mpongwe, the name of the tribe on the banks 
of the Gaboon, and hence, applied to tbe region they inhabit. 
Their local name for the Chimpanzée is Enché-eko, as near as it 
can be anglicised, from which the common term “ Jocko" 
probably comes. The Mpongwe appellation for its new con- 
gener is Engé-ena, prolonging the sound of the first vowel and 
slightly sounding the second. 
The habitat of the Engé-ena is the interior of Lower Guinea, 
while that of the Enché-eko or Chimpanzée is nearer the sea- 
board. 
Its height is above five feet, it is disproportionally broad 
across the shoulders, thickly covered with coarse black hair, 
which is said to be similar in its arrangement to that of the 
Enché-eko. With age it becomes gray, which fact has give? 
rise to the report that both animals are seen of different colors. 
Head. The prominent features of the head are, the great 
width and elongation of the face, the depth of the 
region, the branches of the lower jaw being very deep and 
extending far backward, and the comparative smallness of the 
cranial portion ; the eyes are very large, and said to be ces 
of the Enché-eko, a bright hazel ; nose broad and flat, sligh T 
elevated towards the root; the muzzle broad and prominent, 
lips and chin with scattered gray hairs, the under lip highly 
mobile, and capable of great elongation when the animal i5 
enraged, then hanging over tlie chin; skin of the face 
ears naked, and of a dark brown approaching black. 
The most remarkable feature of the head is a high ridge pA 
crest of hair in the course of the sagittal suture, which mee 
posteriorly with a transverse ridge of the same, but kn es 
inent; running tound from the back of one ear to the 
