924 



MR. R. I. rOCOCK ON THE 



[June 14^ 



the middle line. When squeezed a yellowish buttery substance 

 with a strong soui- odour exuded from a pair of smallish apertures, 

 one on each side close to the middle line, so that the hairs became 

 clogged with it. This aperture led into a voluminous sac, very 

 scantily clothed with short pale hairs, the two sacs being separated 

 by a narrow partition and occupying otherwise the whole area 

 between the two false hoofs. Each was filled with the odorous sub- 

 stance above-mentioned, which, in the male at least, pi'osented a 

 concentrically stratified arrangt-ment and was greenish in colour. 



Text-fig. 118. 



,fh. I 



Tetraoeros quadricomis ? . 



A. lufe.ior view of hind foot -.fh., false hoof with its inner half and Iheudjacont 



skin cnt awiiy to show the jrlanilnlav in;iss (s.). 

 H. Front view of the same foot sliowmt? tlio large horuy accretion (e.). 

 C. The same in median vertical si'ctioii. 



This is the only Antelope known to me which possesses such 

 glands. Whether these sacs are the glands that Hodgson men- 

 tioned as sometimes present in the hind feet or not I cannot say. 

 In any case, it is quite evident that they have no sort of con- 

 nection, except a functional one, with the interdigital glands of 

 other Bovida). 



