1910.] CUTAXICOUS SCEXT-GLAXDS OF UUMIXANTS. 877 



situated in the middle of a naked oval patcli of skin just in front 

 of the orbit. The orifice led into a, shallow integumental pocket, 

 dipping into the sul)stanceof the black underlying gland. Under 

 pi'essure thickish black secretion could bo S(|ueezed from the 

 orifice. 



Text-fiy. 9G. 



Madoqua phiUipsii. 



A. Median vevticul section of front foot. 



B. The same of hind foot. 



C. Preorbital gland with orifice distended. 



D. Ditto ditto closed. 



E. Ditto in section. 



The two halves of the feet were united in the middle 

 line by two " webs," an anterior and a posterior, the posterior 

 extending as far downwards as the heels and constituting the 

 posterior wall of the interdigital space, the anterior being some 

 little distance above the proximal margin of the hoofs, which 

 were thus capable of much greater distension anteriorly than 

 posteriorly. Beneath the anterior web, the integument receded 

 obliquely backwards and upwards, and gradually passed into the 

 anterior wall of a short subcylindrical tube running upwards 



