20 EINAR LONNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



the nape, corresponding to the postauricular tufts of the young, are only about 6 cm., 

 and in the other male (163) they are still shorter, about 4 V2 cm. and do not reach beyond 

 the margin of even the dry ear. The length of the hairs forming the side whiskers is only 

 about 3 cm., and they are not standing out, but chiefly directed downwards. On the 

 whole throat from below the ears, except on the grey chin, the 2 V2 — 3 cm. long hair is 

 directed forwards forming a kind of stubby beard. 



In two of the females (161 & 181) the hair behind the ears, and on the nape attains 

 a length of about 6V2 — 7 cm., in the others it is partly shorter. On the whole, however, 

 the postauricular tufts, and the fur of the nape and the neck appear better developed in 

 the females than in the male n:o 163. The side whiskers, although present and of the 

 same general ai*rangement, are somewhat less pronounced in the females, but the forward 

 directed hairs of the throat, which to a certain degree form a beard behind the chin, are 

 present, but softer than in the males. The hair on the crown around the bald patch is 

 shorter than elsewhere. 



The length of the hair on the middle of the back is in the females n:s 161, 181 & 224 

 about 6 — 7 cm., in the oldest male (70) and female (178) about 5 cm., and in the male 

 n:o 163 only about 3V2 cm., but the fur of the last one is perhaps more dense than in 

 the others. The shortness of the fur of this male appears rather remarkable. It is pos- 

 sible that it depends upon the season, but it was shot in May and a female shot a month 

 earlier had long fur, and the same was the case with another collected in July. 



With increasing age the fur of some parts appears to become scantier than in the 

 young animals not only on the head, but also on the throat. This is especially conspicuous 

 on the old male in which also the hind neck is almost bare, only with scattered hairs. 



The colour is also gradually changed with age, the adult not being quite black as 

 the young. The female n:o 224 forms, however, an exception because, although it is by 

 no means the youngest among the adult, it is practically black all over. Even among 

 the sparingly scattered hairs on the chin there are at least as many black as whitish ones. 

 On other parts of the body if a closer inspection should reveal brownish tips of some hairs 

 it is as a rule the broken and faded ends of black hairs. Next in general blackness comes 

 the female n:o 161. Its head has a decided brownish tint which approaches Dauthenay's 

 ))warm sepia* without being quite identical with the same. The beard on the throat is 

 paler and somewhat more greyish brown, the scattered hairs on the chin are whitish grey. 

 The arms and hands are quite black, but the back is overlaid with a brownish tint produced 

 by brown tips to some hairs, the hind legs are similar, though with less brownish. A great 

 number of these brownish hair- tips, but not all, belong to old, broken and faded hairs. 



The female n:o 181 is pretty similar, but is more greyish brown on the lower back 

 and on the hind legs. 



The old female n:o 178 has the short hairs on the upper parts of the head light brown- 

 ish grey, the whiskers dark brown, the arms and upper back black mixed with brownish 

 tips. From the middle of the back the colour gradually fades more and more so that in 

 the pelvic region it is a rather pale brownish grey. The hind legs are darker brownish 

 grey. The breast and belly are blackish brown. 



