42 THE SPECIES OF THE ANTELOPE- 



branch of the Curiene-river, collected in 1891. These skulls 

 differ entirely from the skulls of the above described Pedio- 

 tragus-sipecies. The horns in the male are much more bent 

 back, slightly curved ; they are stalked as f. i, in the 

 Ourebia scoparia; towards their base feeble traces of rings; 

 length of horns not more than 7.6 cm. Upper surface of 

 skull feebly roughened, much more like in the female- 

 skulls of the other species ; female-skull still less roughened. 

 It is evident that we have here an undescribed form, vs^hich 

 1 propose to call after the two brethren v. d. Keilen. 



It is highly probable that the young female from Humbe, 

 mentioned and described in P. Z. S. L. 1878, p. 742, by 

 Monsieur Barboza du Bocage as Nanotragus tragulus (Forst.) ?, 

 is simply a specimen of my Kelleni, the more as this des- 

 cription agrees very well with what I find in a very young 

 specimen (a male according to Mr. v. d. Keilen), sent in 

 1888 to our Museum by Mr. P. J. v. d. Keilen from 

 Gambos, interior of Mossamedes ; Du Bocage calls his spe- 

 cimen »uue jeune femelle", I conclude from its length, 

 viz. 0.75 m. (rextréraité du museau a la base de la queue) 

 that it is a nearly fullgrown specimen or about that: mo- 

 reover it is not very likely that a young specimen should 

 have ears as long as 11 cm.; so that, although adult spe- 

 cimens are still wanting, we may form us a fairly good 

 idea of the species. 



Some measurements of the adult (male) skull : 



mm. 



Length nasalia 48 



» lower jaw 116 



» upper molar series 46 



» lower » » 49 



» diastema 28 



» of horns 76 



Circumference of horns at base 35 



Distance of base of horns to skull, behind ... 7 

 Van der Kellen's young male-specimen measures about 

 46 cm. from the base of tail to the muzzle; no indication 



Notes Irom llie Leyclen IMuseuni, A"ol. XXII. 



