K€NGL. SV. VET. AKADEMIEN8 HANDLINGAE. BAND 58. N:0 2. 29 



»madder brown ». The upper back is much mixed with black. The middle of the back 

 »reddish black » (344, 3 & 4) on the sacral region fading to smoky blackish which gra- 

 dually on the tighs and hind legs passes into a colour between »slate» (362) and »smoke 

 grey» (363), but somewhat darker than either. The sides of the head are in the older 

 specimen light grey with a shade of »reddish salmon », in front partly overlaid with 

 blackish hairs. (In the younger specimen the same parts are a pale shade of »fawn)>.) 

 The throat and the inner side of the arms are smoke grey; the lower side of the body 

 silky whitish grey, inside of hind legs pale grey. Hands and feet s'moky black; tail al- 

 most pure black. 



The third specimen (n:o 239) shot at the same time is partly similar, but darker. 

 The hairs behind the ears are smoke grey. The sides of the head exhibit the palest shade 

 of »dark fawn» (307) mixed with black. The back is )>chocolate» (343,3; orRiDGWAY's: 

 »Prouts brown ») overlaid strongly with black in the middle parts, but dominating on 

 the sacral region and from there shading into the somewhat paler (343, 2) hind legs. 

 Hands, feet, and tail black. Lower side of body smoke grey. 



One ot the males (n:o 202) collected in Aug., Sept. 1914 is rather similar, but the 

 colour of its head, nape and shoulders is more satiu-ated, something between »maroon» 

 (341, 4) and »madder brown » (334, 4). The sides of the head is a pale shade of »burnt 

 umber » (304, 1). The back is »carob brown » (342, 2 — 4). Otherwise like n:o 239. 



The remaining male (n:o 203) is the reddest of all, and most resembling G. ellioti 

 DoLLMAN, but differs from the original description of the same by its black hands, and 

 grey, instead of buff, under parts. Head behind black frontal band »madder brown ». 

 Nape, shoulders and anterior back »mahogany» (335, 4); on the middle of the back the 

 colour passes into »carob brown » (342, 2) which gradually becomes somewhat paler 

 posteriorly (342, 1) and ends abruptly just above the black tail. Arms almost »Indian 

 chestnut red» (333, 4) dark smoky grey on the inside; hands black. Hind legs »warm 

 sepia » (305, 1); feet black. Lower side of body from the throat backwards rather 

 dark smoke grey, paler on the breast. The hair-tufts behind the ear are dark smoky 

 grey in their lower portion, but blend gradually into the colour of the nape. The sides 

 of the head are something between the palest shades of »madder brown » (334, 1) and 

 »red ochre » (332, 1), only little mixed with black in front. The hairs are also as usual 

 paler (in this case somewhat huffish) towards the tips. 



The female (n:o 204) has the crown of the head, behind the narrow black band, 

 »fawn» (308, 2 — 3). The upper parts of the arms are also »fawn)>, but a little paler 

 (308, 1 — 2). The shoulders are much mixed with black, and the whole of the upper side 

 from the upper neck to the tip of the tail is black, perhaps with a reddish shade on the 

 neck. The outer sides of the hind legs is dark smoky blackish grey, darker than 

 Ridgway's »f uscous ». The inside of the limbs and the lower side of the body are smoke 

 grey, palest on the breast. 



These descriptions prove that not two specimens are fully alike. 



The question is then to decide, of how great importance these differences are, 

 and whether more than one race is represented by these specimens. It is extremely 

 difficult to have this question settled. It might, however, be assumed that the two 



