1907. J MONKEYS OF THE GENUS CERCOPITHECUS. 733 



direction of growth of the whiskers as well as by the frontal band. 

 The tuft at the i-oot of the tail and the sharp differentiation in 

 colour of the whiskei^s from the crown of the head point to 

 affinity with C. rethiojos ; but the absence of white hairs on the 

 lips, the yellower whiskers, the yellow end of the tail, and 

 the rusty pubic patch separate C. tantalus from that species. 

 The alleged blackness of the face and the presence of orange- 

 yellow hairs round the scrotum in the examples, identified as 

 C. sabceus by Pousargues, from the Grande Brousse and the 

 Kemo Rivers in the French Congo, suggest the possibility of 

 these Monkeys belonging to C. tantalus rather than to C. sabceus. 

 And I think there cannot be much doubt that certain Nigerian 

 Monkeys referred to C. sabceus by Audebert and Reichenbach 

 belonged to this species. 



In the British Museum there is a specimen of this species 

 ticketed Jebba (G. F. Abaclie, 0.2.18.1), resembling that described 

 above in almost every i-espect, except that it may be regai-ded as 

 aged or decoloiised. There is scarcely any trace of yellow in the 

 whiskers, and the hairs of the dorsal area of the head and body 

 are almost brownish yellow without the rich colouring charac- 

 teristic of those in the Society's collection. I am disposed 

 to attribute this difference to the fact that menagerie-kept 

 examples are protected from those influences of weather to 

 which wild animals are subjected. I have noticed similar 

 differences between menagerie and wild-caught specimens 

 of other species of this genus. It is, in my opinion, not impro- 

 bable that C cethio'jjs and C. tantalus, as here recognised, will be 

 found to intergrade. Up to the present time, however, I have 

 not seen any specimen that could not with certainty be assigned 

 either to one or the other of these forms. 



Subsp. BUDGETTI, nOV. 



Differing from the typical Nigerian form in having the long 

 whisker-hairs much more decidedly speckled and annulated 

 some black hairs on the hands and feet near the base of the 

 fingers and toes, and the hairs below the knee and elbow on the 

 inner side of the limbs distinctly speckled. There is a very large 

 patch of almost fiery-red hairs on the pubic area. 



Loc. Uganda : Bathyaba, on the east shoi-e of Lake Albert 

 {J. 8. Budgett, no. 3.2.12.1 in B.M.). 



The extension of C. tantalus into ^^estern Uganda is a fact of 

 some interest. C tantalus hudgetti diflers from C. 'pygerythrus 

 centralis Neum., its most nearly related geographical -Alj, in the 

 pale colour of the hands, feet, and extremity of the tail, its darker, 

 less green dorsal colouring, its dirtier yellow and longer whiskei-s, 

 the presence of a black streak behind the corner of the orbit 

 limiting the brow-band, the speckling of the under side of the 

 limbs distally, and in the size and brilliance of the rufous patch 

 of pubic hairs. 



