222 



Mr. R. I. Pocock on some 



In an example of the typical race of this species from 

 Northern Nigeria, the gland (fig. 4, B) consists of a 

 thickened area of skin concealed and overgrown by hair 

 basally adherent with secretion. The gland is about 30 mm. 

 long and 6 mm. thick and slightly elevated, resembling the 



Fig. 4. 



"/i «'/,','Viii 





A. "Muzzle and rhinarium of JEgon/x alr/azel from the front. X 5. 

 13. Preorbital gland of the same in longitudinal section. 



C. Extremity of the penis of the same from the left side. 



D. The same from the right side with urethral process pulled down. 



E. Extremity of penis of Hippotragus niger with urethral process 



straightened. 



F. Muzzle and rhinarium of Oryx gazella from the side. 



corresponding gland of Hippotragus, although shorter as 

 compared with its thickness. 



The muzzle (fig. 4, A) in its general features is like that 

 of Oryx gazella, but the rhinarium is considerably more 

 reduced. When viewed from the front it is much wider as 



