1910. ] Cl-TANKdCS SCK.N'I-I.'I.AXD.S oK 1! IMIVANTS. '.H)9 



Pevsian Gulf, kimlly lent to me by Mi-. Gerrard. the peil.-il i^inuds, 

 tlioxigli iuijierfeft, had ;ipp;u-ently the same structmc as in 

 0. hpAsa and there was no trace of inguinal glands. 



Oryx algazel Oken. 

 ('i''he Soudanese Oryx = 0. leaconj.c of most authors.) 



Both Owen and Ogilby state that this species has no pre- 

 orbital gland. I presume this observation was based upon an 

 examination of dried skins or of skulls. It is not, liowever, ti-ue ; 

 for in the example now living in the Gardens there is quite 

 commonly a small patch of secretion sticking the hairs together 

 about an inch in front of the eye. This proves the existence of 

 a specialised glandular area, beneath the haii-s ; Imt probably the 

 gland is not highly developed. 



Genus Hippotragus Sund. 



Accoi'ding to Owen, the following species of this genus liave 

 neither preorbital nor inguinal glaiids : //. leucoj^hcea, equina 

 [ = barbata). 



The only species of this genus examined by Ogilby was 

 H. leucopluea^ which he referred to the genus Oryx. He agreed 

 with Owen that this species has neither inguinal nor preorbital 

 glands, but adds that the pedal glands are large and that there 

 are two pairs of mammfe. W. L. Sclater also states that in the 

 genus Hippotragus the preorbital gland is absent and that there 

 are two pairs of mamma^. 



Hippotragus xiger Harris. (The Sable Antelope.) 

 (Text-fig. 110.) 



In an adult female of this species whicli died in the Gardens I 

 found a preorbital gland undei'ljang the white preorbital tuft of 

 hair. It was very little differentiated, however, consisting, like 

 the knee glands of Gazelles and some Sheep, of thickened vascular 

 integument. The bases of the white haii's were crowded with 

 pale yellow grains like scurf, smelling of a mixture of sour milk 

 and new-mown hay. 



There were no inguinal glands. 



The pedal glands were well developed on all four feet and 

 opened to the exterior by a small subcircular orifice in the centre 

 of a naked patch of skin in a shallow depression close to the 

 proximal end of the hoofs. The gland was a large sac passing 

 obliquely upwartls and backwards and reaching as far as the 

 posterior integument of the pastern, and with its lower wall closely 

 applied iuferiorly to the interungual web which was shai'ply folded 

 back upon itself, the infolded poi^tion constituting the wall of the 

 gland in question. The walls of the gland were covereil with 

 short hairs, becoming longer towards the orifice of the gland. 



