Habits and Osteology of a New Orang. 431 
a broad straight edge, while the lateral incisors were pointed, 
very closely resembling a human canine. The interval be- 
tween the lateral incisors and the canines in both sexes was 
proportionally less than in the Chimpanzée, though there could 
not be said to exist any great regularity in this respect in the 
different crania. The canines of the males were much larger 
than those of the females, but the points were too much 
abraded to render it practicable to determine exactly their 
original length. ‘The canine of the male, worn as it is, meas- 
ures 2.2 inches, and projects about an inch below the edge of 
the alveolus ; that of the female, which was not worn, pro- 
jected only 0.7 inch below the edge of the alveolus. In both 
Sexes these teeth were laterally compressed with a slightly 
trenchant edge behind, and on the inner face impressed with 
two distinct grooves. The premolars are equal in size, the 
_ external cusps longer and more pointed than the internal ; the 
. molars have each four cusps the two external the longest, the 
_ own having a more rhomboidal form than in the Chimpanzée ; 
| the third molar is the smallest of the three, and in all, the 
Anterior cusp on the inside is united by an oblique ridge to the 
. Posterior cusp on the outside. 
. Tn the lower jaw the lateral incisors are much longer than. 
E the middle, and. are separated by a small space from the ca- | 
. Pines. "The first premolars have blunt stout conical crowns, 
_ With the rudiment of a second cusp on the posterior and inner 
E edge 5 the second premolar is the smallest, has two cusps on 
E Ats anterior ge, with a third much smaller on the posterior 
. Mher angle, a rudiment of a fourth cusp is seen on the outer 
. "mgl. Of the molars, the third is the largest, and the first 
EOS oet of the series ; all have three cusps on | 
two on the inside, in which respect they resemble those of 
Chimpanzée, and differ from the Orangs. “In the true 
. '9n*eys (Cercopitheci) the Gibbons and the Orangs, the last 
„oar of the lower jaw has a square quadri-tuberculate crown, 
Ke that above." 1 i EE : 
1 Owen, Op. Cit. Vol, I., p. 442. 
