PAPIO CYNOCEPHALUS, 
69 
likewise covered more or less with long hairs of a straggling character. The only 
really short hairs are on the radial portion of the fore limb, on the hind feet, and on 
the tail. The pelage is greyish yellow, but more yellowish on the vertex and on the 
hind-quarters, and rather rich yellow on the sides of the body, on the base of the tail, 
and on the outside of the limbs. The first phalanges of the fingers are covered with 
greyish-white hairs, while the others are nearly nude. All the phalanges of the toes 
are clad with long greyish-white hairs. The grey of the shoulders is more or less 
tinged with blackish, and the yellow of the outsides of the limbs is also tinted with 
the same colour, likewise the hairs on the vertex and on the upper surface of the neck. 
The black is due to the terminal band being especially well defined on the vertex, also 
on the neck, limbs, and tail. Below the ears the hairs are decidedly yellowish, with a 
few black-tipped hairs among them. The face is more or less covered with short white 
hairs, which are most numerous between the eyes and the mouth, so as to produce the 
appearance of a white band on the side of the face. The chin and throat are 
greyish white, passing into yellowish on the belly. The inner sides of the limbs are 
pale yellowish white. The grey appearance of the dorsal surface is due to the long 
hairs, in which annulation has all but disappeared. Some of the long hairs on the 
shoulder measure 230-270 mm, in length, and 130 ram. over the rump, where they 
are more sparse. The fur on the neck is dense and measures about 110 mm., and 
the long hairs on the sides about 150 mm.; on the outsides of the thighs the hairs 
are from 100 to 120 mm. long, but the hairs on the radial portion of the fore limbs are 
not more than 20 mm. long, w'hereas on the tibial portion of the hind limbs the hair is 
80 to 100 ram. in length. The long hairs have a black tip varying in extent, followed 
by a yellowish-grey band and by a narrow blackish band, the greater part of the 
remainder of the hair being greyish yellow ; but when the fur is pulled aside about 50 to 
60 mm. of the base is seen to be very pale brownish. In very many of the hairs the 
annulation, especially in the long hairs of the sides, practically disappears. The hairs 
at the end of the tail are uniformly coloured pale greyish yellow, with a faint brownish 
tint, and are about 100 mm. in length. They tend to form a terminal tuft, but in no way 
comparable to the brush on the tails of P. hamadryas and JP.porcarius. The preserved 
skin measures 810 mm. from snout to vent, and the tail 600 mm. 
The type of P. langheldi is unquestionably the female of the baboon the skin of 
which has just been described, and is in no way separable specifically from P. thoth, and 
from its so-called subsp. iheanus, from which, however, the Perondo skull (Plate XIII.) 
differs in its smaller size, but in no other respect. 
In a male from Mpapwe the black on the carpal area, produced by the black tips to 
the hairs, is less than in the baboon from Perondo ; but another male, also from 
Mpapwe, differs from these two in having much more black on the front of the fore 
limbs—indeed so much so, that the upper surfaces of the hands and feet are nearly black, 
