58 On a neic Blue I hither from yt/asaland. 



XI. — .1 new Blue Duiker from Xi/nsdlund. 

 By Oldfield Thomas. 



Cephalophus nyasa, sp. n. 



A member of tlie G. monticola .2;roMp, with much more 

 rufous on limbs and body ami with a remarkably narrow 

 skull. 



Colour of back darker brown than in C. monticola, with 

 more rufous suffused in it, the median area nearly match ino; 

 Kidgway's " burnt umber." Shoulders, sides, and hips dull 

 deep rufous, whole of belly greyish rufous ; limbs bright rich 

 rufous, but the region between the accessory and main claws 

 dark brown as usual. White of under surface almost obso- 

 lete, reduced to small and inconspicuous patches in inter- 

 ramial, axillary, sternal, and inguinal regions. Rump dark 

 chocolate-brown, contrasting with the rich rufous thighs and 

 hams. Upper surface of tail still darker, blackish brown. 

 Head M-ith the usual dark median area and rufous supraorbital 

 streaks. Ears brown outside, with a small rufous patch at 

 their anterior base, white inside. 



Skull with a remarkably long and narrow muzzle, the 

 breadth across the hinder part of the nasals going 2\ times in 

 their length. Premaxillte little expanded laterally. Median 

 notch of palate ending nearly half a centimetre in front of the 

 lateral ones. Bulla} small and narrow. 



Dimensions of the type (measured on the skin) : — 

 Head and body 660 millim. ; tail broken (of the second 

 specimen 77); hind foot, s. u. 157, c. u. 178. 



Skull: greatest length 135; basal length 115; greatest 

 breadth 56; nasals 50x19; breadth across premaxillaj 14; 

 breadth of brain-case 45 ; palate length 68 ; muzzle to orbit 

 67 ; muzzle to anterior premolar 42 ; length of tooth-series ;i6. 

 Horns, length 48, diameter at base 14. 

 Hah. Mlanje, Nyasa. 



Type. Adult male. B.M. no. 1. 11. 11. 2. Collected by 

 31 r. Brown. Two specimens. 



This species is no doubt most nearly allied to C. Ilecki, 

 Matsch.*, from the Mozambique coast, but instead of having 

 more white on the underside than C. monticola, it has less ; 

 it is apparently more ruf< us on the body, and it has the usual 

 dark marking on the back of the pasterns, C. llecki being 



* SB. Ges. nat. Fr. Berl. 1897, p. 158. 



