70 
THE MAMMALS OE EGYPT. 
only a little yellow showing itself. The tail of this animal also differs from that of the 
others in being blackish brown, and having the long terminal hairs almost orange-yellow. 
The annulation of the hair is well marked, the subapical pale band being almost 
white, the skin has a greyish-brown appearance. Two of the flat skins from Masimani 
are more greyish than any of the foregoing, and one is more grey than the other. The 
full-grown specimen (10876) is much more yellowish than any of the baboons already 
enumerated, and a good deal of black occurs on the front of the fore limbs, which, 
however, are imperfect. The tail is mixed black and yellow, and it seems to have 
had a pale yellow tip. 
An adult male baboon in the British Museum from Fort Johnston, at the southern 
end of Lake Nyassa, is much more yellowish on its upper surface than the types of 
P. thoth, and P. thoth subsp. ibeanus. The sides of its body are rather rich yellow, also 
the fore limbs, but more especially the outsides of the hind limbs. On these parts, and 
perhaps more so on the hind limbs, the annulation of the hair is not nearly so well 
marked as in subsp. ibeanus. The distribution of the hair on the face is the same as 
in the last-mentioned baboon, but it is more yellow. The chin, throat, and chest are 
greyish white with a yellowish tinge, but on the abdomen the yellow is much more vivid. 
On the chest the annulation so marked in P. tliotliis, almost entirely lost, but the black 
tips to the hairs on the front of the fore limbs and on the hands is much the same as 
in the foregoing type, but the yellow is more vivid. The tail, except at the base and 
tip, is dark olive-brown, speckled with yellowish; its base is concolorous with the 
yellow rump, and its tip, which is slightly tufted, is pale yellow with a rufous tinge h 
Two baboons from Mombasa, also in the British Museum, are inseparable from the 
Fort Johnston individual. On the other hand, the adult male from Zomba, a little 
further to the south, about 64 kilom., has much the same colour on its dorsal surface as 
subsp. ibeanus, and its chest is annulated almost as distinctly. Jhe outsides of the 
limbs are not nearly so yellow as in the Fort Johnston baboon, and in its colour 
generally it resembles the typical specimen of P. thoth. The tail is pale yellowish, 
but obscurely speckled with black, and its tip is whitish, the terminal hairs being so 
well developed as almost to constitute a tuft. 
I cannot separate these two Mombasa specimens from baboons in the British and 
Berlin Museums, which lead directly into the specimen in Paris which Is. Geotfroy 
had before him in 1841 when writing his article on C. babuin (misspelt babouin) for 
the ‘ Archives du Musee.’ 
A young male example of this yellow baboon in the British Museum diflfers 
from the Mombasa baboons in being much more yellow throughout, especially on 
the upper surface of the head, on the front of the fore legs, outside of the thighs, 
1 This colour may be due to the same colouring-matter which has stained the long hairs on the soles of 
the feet orange-red. 
