82 On new Species of Monkeys. 



Gen. char. Allied to C. cephus, but upper parts ochraceous, 

 not red, and a conspicuous rufous band on brow behind the 

 black superciliary line, as in C. brazzce. 



Colour (adult male). Superciliary band black, extending 

 backward on sides of head from eyes to ears 7 and down sides 

 of face to upper lip ; cheeks also black ; a rufous band across 

 forehead behind the superciliary line; top and back of head 

 mixed yellow and black, the yellow most prominent on fore 

 part of head ; entire rest of upper parts, shoulders, and thighs 

 ochraceous and black, much paler than the same parts in 

 C. cephus, the hairs being pale grey at base, then banded with 

 black and ochraceous, and tipped with black ; broad patch 

 over temples to ears yellowish ; hairs on lips and chin black ; 

 throat greyish white ; entire under parts, inner side of arms 

 to elbows, and legs to ankles dark smoke-grey, much darker 

 than C. cephus ', forearms and hands and feet blackish, 

 sparsely speckled with pale yellow ; legs below knees 

 speckled black and yellow ; tail above, basal portion like 

 back, then blackish maroon, grading into pale bright red ; 

 beneath dark grey at base, grading into pale red. 



Measurements. Total length 1330 mm. ; tail 750 ; foot 145. 

 Skull : total length 1196 ; occipito-nasal length 90'7 ; inter- 

 temporal width 40"9 ; breadth of brain-case 56 8 ; hensel 79; 

 zygomatic width 73*2; palatal length 41'5 ; length of upper 

 canine 20 ; length of upper molar series 25"5 ; length of 

 mandible 78*3 ; length of lower molar series 32*2. 



Type in British Museum, no. 47. 3. 1. 6. 



The skull when compared with that of C. cephus has a 

 much greater length, a longer and more protruding rostrum, 

 and a longer brain-case, broader posteriorly. The orbits are 

 differently shaped, more circular than oblong, with a greater 

 extreme width. The teeth are much larger and the upper 

 molar series longer by nearly the width of the first premolar; 

 the palate is longer and wider and the basioccipital much 

 shorter and narrower. The difference in the size of this bone 

 in the two skulls compared is remarkable. 



This is a rather extraordinary specimen. It has been in 

 the British Museum for a long time, was obtained by 

 Mr. Bartlett, and is stated to have come from West Africa, 

 but. no particular locality given. Beside the great difference 

 in thee lour of the pelage b.tween this example and specimens 

 of C. cephus, the rufous-brown band at once separates it from 

 that species and seems to point to a relationship with C. ne- 

 glectus and C. brazzce. It is not so broad as the brow-bands 

 of those species, and it is the only character these animals 

 liavc in common so far as their coloration is concerned. If 



