88'2 MR. It. 1. pt)CucK ON Tilt; [June 14, 



Xototragiis* melanotis Thuiil). (the Grysbok) has, according to 

 Owen, ])i'eorbital and inguinal glands. Max M^eber, however, says 

 that although the preorbital gland ('" Thriinengrube ") is present 

 in the male, in the female it is lepresented by a naked area of 

 skin. This statement must be taken with reserve, in my opinion, 

 since it does not appear to have been based upon fresh material 

 (see under Onrehia ourehi). I have not examined matei'ial of this 

 species. 



Genus Ourebia Laurill. 



OuREBiA OUREBI Zinnu. { = scopana Schr.). 

 (The Cape Oribi.) 



According to Owen, this species has large preorbital glands and 

 inguinal pits. INIax Weber, on the contrary, states that, although 

 the male has a deep preorl)ital gland, this organ is apj^arently 

 i-epresented in the female by a naked spot in front of the eyes. 

 This observation must, I thiidc, have been made upon a mounted 

 specimen, for I cannot reconcile it with the fact that in the 

 female of 0. nigricaudata described below, and in one of 0. mov- 

 tana, now living in the Gardens, the preoi-bital gland is well 

 developed and valvulai-. 



OruKHiA NIGRICAUDATA Brooke. 

 (The Black-tailed Oribi.) (Text-figs. 99, 100.) 



I have seen two young examples, male and female, of this 

 species from Senegambia, presented by Sir George Denton. The 

 preoi'bital gland was marked externally by a longish slit I'unning 

 downwards from a point close to the anterior angle of the eye. 

 This was capable of considerable distension, and led into a simple 

 pocket-like invagination dipping into a large, oval, black, glandular 

 mass. Under pressui-e, the secretion, black and adhesive like 

 lamp-black, could be squeezed fiom two areas marked by depres- 

 sions, one near the middle, the other upon the upper corner 

 of the gland. Each depression contained several pores, from 

 which long coiling threads of the substance exuded. The gland 

 and its orifice were relatively longer in the male than in the 

 female. 



The so-called glandular jiatch l)eneath the ear was rather 

 scantily clothed with \eiy short hairs. In section the skin 

 was seen to be markedly thinner than that of the surrounding 

 area, and showed no evidence of specially developed glands. 



There were two pairs of teats. 



The inguinal glands were represented in the female by a pair of 



* Tliis gpiieiic name was proposed l>y,Thoinns nnd Schwann for the Grysbok 

 (Ahstr. P. Z. S. No. 27, p. 10, 1900), bccausi' it ditlers from Bhaphicerus in 

 possessing supijlemeiitary hoofs. Mr. Lydckker's st:it(iiunt, thereforo, that the 

 cenus was based n)(nn li. cnmpcstris (tlie Steinbok), which has no su])plemciitary 

 hoofs, is erroneous (' The Game Animals of Africa,' i). 181, 1908). 



