376 MR. p. L. SCLATER ON HUNTER's ANTELOPE. [June 18, 



and outwards. About 4 inches above the base they turn backwards 

 and outwards for about 7 inches, thence they rise up in a nearly 

 straight line with the front of the skull, and terminate in long smooth 

 tips, which towards their extremities approach one another very 

 slightly. 



The length of the skull of this specimen from the occipital foramen 

 to the end of the palatal bones is about 15 inches, that of the frontal 

 surface along the middle line I3g inches, that of the molar series 

 3*7 inches; the extreme breadth of the skull at the orbits is 5'7 

 inches. 



(2) Skull and horns of adult female (fig. C, p. 375), marked " H. 

 84." 



This specimen is in fact a miniature of that of the male, though 

 there are some noticeable differences. As a whole the horns are 

 proportionately longer, much more slender, and less strongly built. 

 The smooth apical portions are nearly straight, and are rather 

 divergent than convergent at the tips. 



The length of these horns along the frontal ridge is about 20 inches ; 

 the distance from the base to the point in a straight line 18| inches, 

 and the girth at the base about 5"3 inches. The length of the skull 

 from the occiput to the end of the palate is 13| inches, not much 

 less than that of the male, but the skull is proportionately narrower, 

 being only 5'2 in the extreme breadth of the orbits. 



The skin of this specimen accompanies the skull and horns, 

 and is that from which Mr. "Wolf has prepared his sketch (Plate 

 XLII.). The diagnosis above given has been also taken from this 

 specimen. 



(3) Skull and horns of a young male, marked " H. 73." 



These are not materially different from those of the adult, except in 

 their rather smaller dimensions, but the tips are more convergent at 

 their extremities. 



(4 and 5) Two skins — one marked "H. 90," the other unlabelled, 

 concerning which 1 have not yet been able to ascertain particulars. 

 But examination of them does not show any material differences in 

 colour or structure. 



Mr. Hunter's notes upon this Antelope are as follows : — 



" We first met with this Antelope about 1 50 miles up the Tana 

 River. It is only found for certain on the north bank of the river. 

 It frequents the grassy plains principally, but I have also often seen 

 it in thin thorny bush. It is generally met with in herds of from 15 

 to 25 individuals. 



" At the time of the year when I came across them (October and 

 November) I saw several young ones in the herds. The banks of 

 the Tana River are fringed with a thin belt of forest, then the ground 

 rises slightly and one sees extensive plains dotted here and there with 

 large patches of bush, composed principally of Euphorbias and Aloes. 

 The Lesser Koodoo {Strepsiceros imberbis) lives principally in these 

 patches and feeds outside of them in the early mornings and evenings. 

 When I first saw the new Antelope I was stalking two examples of Ga- 

 zella walleri,and though I saw the Hunter's Antelope in the distance I 



