OLDFIELD THOMAS AJ^fD E. C. WEOIJGHTOJN"— MAMMALIA. 485 



7. CeRCOPITHECUS LEUCAMPYX AURORA, subsp. n. 



A Cercopithecus intermediate betweea the C. leucampyx and C. alhogularis groups, 

 with the dark limbs and belly of the former and the bright coloured back of the latter. 



Size about as in C. I. stuhlmanni. Fur very long (50 mm.) on back, still longer on 

 shoulders (70-80 mm.). General colour above near "buff-yellow " (rather paler and 

 brighter) ; individual hairs white at the base, passing into pale buffy-yellow with three 

 black rings (rings and intervals about 3 mm. each). The head, unfortunately, is 

 missing, but the dorsal coloration is carried on to the nape. On the points of the 

 shoulders it becomes much darker, the individual hairs being black almost to the base 

 with three yellow rings (each 3 mm.) towards the point. The outer sides of the 

 thighs greyish-black, the hairs pale slate-grey with a subterminal black ring (3 mm.) 

 and a white tip (2-3 mm.). Tail losing almost immediately (within 100 mm. from 

 base) all trace of the dorsal yellow colouring, and taking the same greyish coloration 

 as the outer side of thighs, at first with the white colour in excess, then gradually 

 through an increase of black shading into pure black at the extreme tip (100 mm.). 

 Arms to the shoulders, belly, and inner side of thighs pure black, the hairs black to 

 their bases. 



Tail short, barely 700 mm. in length, as compared with 900 mm. in an example of 

 C. I. stuhlmanni. 



Hab. South end of Lake Kivu. 



Type. Adult male. B.M. no. 7.7.4.1. Collected and presented to the Museum by 

 Mr. Douglas Carruthers. 



This handsome Monkey, while resembling the members of the C. albocjidaris group 

 in its yellow dorsal colouring, is easily distinguishable from all of them by its dark 

 hind limbs and black belly, in which it resembles the members of the C. leucampyx 

 group. 



Family L E M u R i D je. 



8. Galago thomasi Elliot. 



Ann. Mag. N. H. (7) xx. p. 189 (1907). 



<j . 684, and ? in spirits. Fort Beni, Semliki Valley. 

 6 . 688, 689. Mpanga Forest, Fort Portal. 



Described on these specimens by Prof. Elliot. 



[This little Lemur was not seen on Ruwenzori, but it is difficult to believe that it 

 is not to be found in some of the wooded valleys below 6000 ft., for it was found in 

 the Congo Forest at Fort Beni, and in the Mpanga Forest it was extraordinarily 

 numerous. It is entirely nocturnal, and appears to spend the day, not in the tree- 

 tops, but low down in the undergrowth or in the dense masses of tangled creepers on 

 the lower branches and tree-trunks. Late in the evening, when it is almost too dark 

 to see, it suddenly appears, and its shrill chirrup may be heard in all directions. It 



