180 EINAR LONNBERG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 
certain stage of growth, their tips are more and more removed from the mesial line 
by the growth of the core and the horny sheath. Since the horns have reached 
their maximum of development again the distance between the inward directed tips 
is increased by wearing. The smooth tips then by and by become shorter and 
more blunt. I have seen old specimens in which the tips were entirely worn off so 
that the ends of the horns were quite truncate. 
Characteristics entirely based on the shape of the horns must thus be carefully 
considered before they are accepted. 
Fig. 5 a. Buffelus caffer raddcliffei 9. 
All specimens seen by me were covered with hair and looked quite black when 
alive. A closer examination proves, however, that only head, neck, fore-quarters, 
back, tail-tuft, a band above the hoofs, and the front side of the legs are quite black. 
The remaining parts, especially the hind quarters, are dark brown. On the »>knees> of 
the forelegs is a pad of long rather pale brown hair for the protection of the skin 
when the animals kneel down. Mesially along the posterior part of the upper neck 
and the anterior part of the back to the whirl behind the shoulders the hairs are 
bristle-like and attain a length of about 12 cm., but they are not numerous enough 
to form a conspicuous crest. 
