1904.] ON A NEW SUBSPECIES OF HARTEBEEST. 455 



with the Manatee alone of all Mammalia *, had a continuously 

 reneAved molar sei'ies, fresh teeth growing up and pushing forwards 

 from behind, j?:)«ri passto with the fall of worn-out teeth in front. 

 No evidence was available as to the number of successive teeth 

 produced in the course of the animal's life, but a minimum of 

 seven t molars, that is three more than the noi-mal, Avas certain. 



Ml'. Oldfield Thomas also exhibited the skin of a Hartebeest 

 which had been shot by Mr. F. J. Jackson in Uganda, and which 

 appeared to represent a new subspecies of Buhalis jacksoni, cha- 

 racterised by its very unusual mai'kings. 



It was proposed to be called : — 



BUBALIS JACKSONI INSIGNISJ. 



Buhalis jacksoni insignis Thos., Abstr. P. Z. S. 1904, No. 6, 

 p. 22, April 26. 



Allied to B. jacksoni, but with a blaclv dorsal stripe and black- 

 marked limbs. 



General colour tawaiy, darker than in true jacksoni, the hairs 

 tawny throughout, not oi- scarcely ticked with lighter terminally. 

 Rump, flanks, and under surface lighter tawny, not conspicuously 

 contrasted with the dorsal colour. Centre line of back with a 

 prominent sharply defined black line, about half an inch broad, 

 commencing behind the occiput and running along the spine on 

 to the rump, but ceasing about a foot short of the tail. Head 

 much as in true jacksoni, but the tips of the ears edged with 

 black behind, the nasal region darker, and two black marks 

 present on the forehead between the eyes. Ground-colour of 

 limbs of the same light tone as the rump, bvit their anterior face 

 tei'minally with strong black markings, very much as in B. lichten- 

 steini. On the foi-e limbs there was a black patch on the knee, 

 the black beginning again lower down and extending to the hoofs ; 

 the postei'ior face of the pasterns, between the accessory and 

 main hoofs, also black. On the hind limbs the black markings 

 ascended fi-om the hoofs about three-fourths the way towards the 

 level of the hock, the back of the pasterns being also black, as on 

 the fore limbs. Tail with the usual black crest on its terminal 

 half, but less developed than in other species. 



Fur of back uniformly directed backwards, without any trace 

 of the whorl and reversed hairs on the withers found in B. jacksoni. 



Skull and horns as in B. jacksoni. 



Dimensions about as in B. jacksoni. Frontal length of skvill 



* Cf. Thos. & Lyd. P. Z. S. 1897, p. 595. 



t Notation as in Brit. Mus. Catalogue of Marsupials. 



X [The first complete account of The new species described in this communication 

 appears here; but as the name and preliminary diagnosis were published in the 

 ' Abstract,' it is distinguished here by Iseing underlined. — Editoe.] 



