1910.] 



CUTANEOUS SCENT-GLAXDS OF RUMINANTS. 



923 



feet a large black hoi'ny exci-escence occupying the same position 

 and large enough to be visible without separation of the hoofs. 

 The skin fi-om which this excrescence arose was thrown into a 

 multitude of columnar folds. Since I have seen no such excre- 

 scence on the feet of any other specimen of this Antelope, I must 

 regard its development in this example as abnormal, perhaps 

 pathological. 



Text-fiff. 117. 



' Tetraceros quadricornis. 



A. Head of newly born young : gl., preorbital gland. 



B. Head of female: ^?., preorbital gland. 



C. Section of the preorbital gland of the same : fl., flap of skin constituting 



its upper lid. 



D. Preorbital gland of the same with the lid {fl.) raised. 



One of the most interesting features connected with this genus 

 is the presence of a pair of well-developed glands between the 

 false hoofs of the hind legs. In both the male and the female 

 the false hoofs were large and the skin between them was black, 

 tumid, horny, but soft and naked, except for a lougish fringe along 



