Enge-ena, from Gaboon, Africa. 277 
very faintly indicated, if at all, in the skull of the 7. niger.* 
In the cranium now under consideration, when compared with 
the Plate above referred to, the convexity is still more re- 
markable, and will bear a more favourable comparison, with 
the “ bridge” of the nose in some of the human races. 
The expansion of the nasals above, where they are inter- 
posed between the frontals, as described by Professor Owen, 
was overlooked in my former description, only very faint in- 
dications of sutures remaining. On a more careful examina- 
tion, the outline of the portion of bone interposed between 
the orbitar process of the frontals is indistinctly traceable in 
the male skull discovered by Dr Savage, and in both of the 
crania brought to this country by Dr Perkins ; and in all of 
them, on a line with the upper extremity of the ascending 
process of the superior maxillary bone, at the point where the 
nasal bones become the most contracted, there exists an 
equally strong indication of a transverse suture, which sepa- 
rates the portion marked 15 in Professor Owen’s figure from 
the true nasals ; and equally distinct indications of this suture 
exist in his figure just referred to. Thus we have strong 
ground for the supposition that the part marked 15 by Pro- 
fessor Owen may not be the expanded portion of the nasals 
but an additional osseous element intercalated between the 
frontals. In this event, my original description of the ossa 
nasi, “ as having a more triangular form than in the Chim- 
-panzée, the apex being more acute,” still holds good. If, 
however, the bone referred to prove to be a portion of the 
_nasals, we shall have in this another index of the inferiority 
to the Chimpanzée, as it is a repetition of what is met with 
in the lower quadrumana. 
__ Teeth—The molars alone remain, the incisors and canines 
having been lost. The length of the grinding surface of the 
molar teeth is 2-9 inches, the two rows being nearly parallel 
to each other. This is true of the alveoli, though the crowns 
slightly diverge from each other posteriorly, in consequence 
“of an inclination outwards. Nearly all of the cusps of the 
teeth are perfect, those of the first molar being the most 
worn, as would naturally be appeeten it win the first which 
Op. Cit., p. 393. 
