AND SOME AXTELOPES OF ANGOLA. 339' 



Measurements in inclies of adult bull and cow Gemsbuck are 

 here given : — 



o^. $. 



Head and body 79 74 



Tail 19 18 



Height at shoulder 46^ 50 



Girth behind shoulder 61 ~ 60 



,, of neck at thr^jat 30 2^ 



,. chest 50 39 



Length of ear 7t — 



A Xote on the Blue Buck (Cephalophus melanorheus). 



At the Loanda Zoological Gardens were a male and female 

 Blue Buck in a large paddock. The general colour of this pair 

 was ash-grey with patches of a rusty tinge, The latter may have 

 been due to a seasonal change of coat or to conditions of 

 captivity. 



Description. — Head darker than body. Rump not noticeably 

 darker than body. Legs ash-brown. Tail fringed with white 

 hairs, with the base and centre black. 



This pair, which appeared to be rutting, were following one 

 another about the enclosure, and were seen repeatedly to face one 

 another and rub the facial suborbital glands together, with a 

 stropping action, continued repeatedly, first on one side and then 

 on the other. 



EXPLANATION OP THE PLATES. 



Plate I. Hippntragvs variant : ad. $ skull in B.M. Coll. Length from occiput 



to end of gnatliion 475 mm. 

 Plate IL Hippotraffits niqer : ad. ^ skull in E.M. Cull. Length from occiput 



to end of gnathion 438 mm. 

 Plate III. Hippotragus equinus: ad. (^ skull in B.M. Coll. Length from occiput 



to end of gnathion 470 mm. 

 Plate 17. Basal aspect of skulls of A niger, B variani, and C ecpiinus, showing 



relative positions of c, c, condyles and p, p, paroccipital processes. 

 Plate V. A. The Angolan Sable Antelope. 



B. Specimens of $ and $ Angolan Springbuck (stuffed) in the B.M. 

 Coll. 

 Plate YI. A. Old stallion of Hartmann's Zebra, showing dewlap. 



B. Dorsal view of Hartmann's Zebra, showing gridiron pattern. 

 Plate VII. A. Anfidorcas angoJensis: ad. $ skull in B.M. Coll. 



B. Antidorcas eiKliore: ad. $ skull from the O.R.C. in B.M. Coll. 

 a' and h' , basi-occipitals of above. 

 Plate VIII. A. Antidorcas angolensis -. ad. $ skull in B.M. Coll. 



B. Antidorcas euchore : ad. $ skull from the O.R.C. in B.M. Coll. 

 The above skulls (PI. VIII.) are shown to too large a scale. 

 They should appear smaller than those of the males shown on 

 PI. VII. 



