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 W T orld 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 



