142 
APES AND MONKEYS. 
It may be distinguished from its larger cousin the mandrill by the absence of 
any bright colours on the naked parts of the face, which are entirely black. The 
short tail is covered with hairs over the whole of its surface; while the general 
build, and especially that of the limbs, is of a much more slender type. Again, 
although the face has the long sausage-like swellings of the mandrill, these are 
considerably smaller and less inflated. The drill is ugly enough, but it is, to our 
eyes at least, one degree less repulsive than the male mandrill. 
The general colour of the fur is brown, tending to a whitish tint on the 
forehead and the crown of the head, and darker on the shoulders and the limbs. 
The under-parts are also lighter, being either of a pale brown or a silvery grey tint. 
The hair of the upper parts is very long and fine, and is of a light brown colour at 
the root, but ringed with black and yellow at the tips. These rings of two colours 
give a greenish tinge to the fur when seen under certain lights. The whiskers 
are thin and directed backwards like those of the mandrill; and the drill also 
resembles that species in the presence of the peaked crest on the crown of the 
head, as well as in the small yellow beard beneath the chin. The apology for a tail 
terminates in a small tuft of hair. The naked jaw and ears are of an ivory-black 
appearance, and the swellings on the snout are not marked by the oblique transverse 
furrows and grooves which characterise those of the mandrill. The naked portions 
of the hands and feet are copper-coloured, while the bare callosities on the buttocks 
are bright red. The colour of such portions of the skin as are covered with hair is 
of a uniform dark blue. The female drill is distinguished from her lord and 
master by her smaller size, and also by the relatively shorter head and paler 
coloration, in which the young males resemble her. 
We have already alluded to the unsatisfactory nature of our knowledge of the 
mandrill in its wild state, but in the case of the present species our information 
appears to be absolutely nil. In confinement, however, the drill seems to be very 
similar in its habits to the mandrill, and there can be no reasonable doubt but that 
there is the same similarity in the wild condition. 
With the drill we conclude our notice of the living monkeys of the Old 
World; but before passing to those of the New World we must devote a short 
space to a few extinct baboons. 
Extinct Baboons. 
Our survey of the long series of Old World monkeys has shown us that as we 
pass from the Man-like Apes through the true monkeys to the baboons, we have 
been gradually receding further and further from a marked approximation to the 
human type, until we have reached forms that show a decided resemblance in their 
projecting muzzles and general contour to the lower orders of Mammals. These 
lowest forms being the baboons, it is but natural to assume that they are likewise 
old in the history of the animal kingdom, so that we should expect to find them in 
a fossil state. In Europe, however, no traces of fossil baboons have yet been 
discovered; while in Africa we only know of them as occurring in the superficial 
deposits of Algeria. The latter circumstance must not, however, be taken as an 
indication that other species of fossil baboons will never be found in Africa, since 
