248 MESSRS. OLDFIELD THOMAS AND M. A. C. HINTON ON 



A few mammals were obtained by Admiral Lynes on a previous 

 visit to the country, and these have been here incorporated. 

 Their numbers run from 1 to 24, while those of the main collection 

 start at 400. 



1. Erythrocebus pyrrhonotus Hempr. & Ehr. 



S . 648. $ . 672. Foot-hills, S. Jebel Marra. 4000'. 

 Practically the first satisfactory examples of this species to 

 reach the Museum. 



2. Cercopithecus tantalus marrensis, subsp. n. 

 c?. 631. Foot-hills, S. Jebel MaiTa. 4000'. 



O . 626, juv. S.W. Jebel Marra. 5000'. 

 A very brightly coloured subspecies. 



Face and chin black. White brow-line well defined, with an 

 anterior edging of black hairs. Whiskers yellowish white, directed 

 backwards and upwards, completely concealing ears. A sharply 

 defined black streak from outer can thus of eye to neighbourhood 

 of ear, separated from the crown-patch by a narrow tract of white 

 whisker-hairs. Predominant hue of upper parts (crown of head, 

 back to rump, and flanks) bright buff or golden, darkened on 

 crown of head and rump by black hair-tips and to some extent 

 by the hair-bases of slate-grey, which are darkest on the crown 

 of the head. The golden tint is especially bright and clear upon 

 the withers and flanks. Under surface of body, with inner 

 surfaces of limbs, well-haired, pure white and rather sharply 

 contrasted with flanks. Outer surfaces of arms and hands 

 from shoulders, and of the legs and feet, from the thighs, of a 

 general light grey colour of cold tone, produced by a mixture 

 of pale slate-grey and dirty white, without any trace of buff. 

 A tuft of white hair on each side of the root of the tail above. 

 Tipper surface of tail, in its proximal two-thirds, like the rump ; 

 its lower surface in the same region white, becoming yellower 

 distally. Distal third of tail, above and below, dull yellow. 

 Dimensions of the type (measured in the flesh) : — 

 Head and body 830 mm. ; tail 1140 ; hind foot 145 ; ear 32. 

 Skull: extreme length 118-6; condylo-basal length 88; zygo- 

 matic breadth 68*2 ; external orbital width 62'6 ; postorbital 

 constriction 44 ; width of brain-case 56-5 ; canine to ni^ 34-2 ; 

 p'-m' 25-4. 



Hah. Foot-hills of Jebel Marra. 



Typs. Adult male. B.M. No. 23.1.1.1. Original No. 631. 

 Cohected April 1, 1921. 



This is a very well-marked subspecies of G. tantalus, a species 

 known to range from Nigeria and the West Coast eastwards to 

 the shores of Lake Albert. G. toldti Wettstein, described from 

 Kadugli, S. Kordofan, on the basis of leather unsatisfactory 

 material, appears to be a member of the " callitrichus " or 

 sabceus group. 



