1892.] OF THE GENUS CEPHALOLOPHUS. 429 



of the species hitherto considered. Ears long, longer than the 

 distance from the anterior canthus to the tip of the nose, their tip 

 narrow and pointed. General colour of body pale greyish brown, 

 sometimes with a yellowish tinge, but very variable in tone ; more 

 or less grizzled, owing to the hairs being annulated with yellowish 

 and brown. Face rufous or yellowish, with a deep brown longitu- 

 dinal patch on the nasal region, rarely extendins>; upwards to the 

 bases of the horns. Throat and belly like back. Chin, iimer sides of 

 fore arms and of thighs, and underside of tail whitish or pure 

 white. Front of fore legs with a brownish line running down them 

 to the hoofs. Metapodials brown. Tail black above and white 

 below, but the base above is commonly coloured like the back. 



Horns present only in c? ^ These set up at a considerable angle 

 to the line of the nasal profile ; slender, tapering, their bases 

 roughened but not markedly thickened, their greatest basal diameter 

 going about 6 or 7 times in their length. 



Skull long and narrow. Anteorbital fossae of medium depth, 

 their border above generally rounded, not sharply ridged ; their 

 bottoms about 20 mm. apart in a fine male. Muzzle long, the 

 distance from the anterior edge of the orbit to the gnathion much 

 exceeding the greatest zygomatic breadth. Mesial notch of palate 

 extending some way in front of the lateral ones. 



Dimensions. — d . Height at withers .575 ; ear 110; hind foot 263. 



Skull — basal length 183 ; greatest breadth 85 ; anterior rim of 

 orbit to gnathion 112; nasals, length 71, breadth 35; muzzle 64 ; 

 length of molar series 61. 



Hah. Southern Africa, from the Cape northwards on the west to 

 Angola [Gabriel (Brit. Mus.) ; Anehieta (Lisb. Mus.)], and on the 

 east to Taita [Wray (Brit. Mus.)] and Mount KiUma-njaro [Hunter 

 (Brit. Mus.)]. 



This common and widely spread species has been made the basis 

 of a large number of untenable species, mostly without any really 

 valid excuse. Certainly the species is rather variable in coloration, 

 especially as to the tone of the general body-colour and the extent 

 of the dark patch on the face ; but the differences are all obviously 

 of httle essential importance, and I have no hesitation in assigning 

 all the names above given to one single species. 



C. grimmii and C. abyssinicus together form a little group some- 

 what apart from the other species, but I do not think this group, 

 to which Gray gave the name of Grimmia, is worthy of generic or 

 even of subgeneric rank. The character of the female being hornless, 

 on which some stress has been laid, is neither constant in G. grimmii 

 nor non-existent in other species^, and the other characters are all 

 rather of degree than of kind, and all very difficult of definition. 

 Other species seem also to lead up towards the group, as for 

 example C. coronatus, which, when adult specimens are obtained, 

 may prove to be quite closely aUied to C. abyssinicus. 



1 Mr. Selous, however, says (P. Z. S. 1881, p. 763) " alttiough the females are 

 almost always hornless, I have met with three examples bearing horns." 



2 See C. maxwelli, supra p. 426. 



Proc. Zool. Soc— 1892, No. XXX. 30 



