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THE CONGO DAUW, OR ZEBRA OF PIGAFETTA. 



Hippotiyris antiquorum, Nobis. 

 PLATE XXII. 



ALTHOUGH the animal we place under this name 

 may be only a variety of the Cape Dauw, there are 

 so many instances of pretended varieties becoming 

 admitted species, that we think it preferable to 

 separate the two ; the present species, even allowing 

 for certain individual variations, differs from the 

 other in being, like the Zebra, white with only a 

 tinge of yellow : the ears are more open, with two 

 black bars and white tips ; the mouth and nostrils 

 black ; and the stripes, extending downwards to the 

 knees and hocks, and even to the pastern joints, are 

 fewer than in the Zebra of the Cape, more irregular, 

 scattered, dichotomous, than in the Cape Dauw, 

 and disposed in spots, with the slender brown in- 

 termediate streaks often interrupted ; the tail is 

 equine and white, frequently tinged with rufous 

 or black at the end. In stature and form it is the 

 most elegant of the whole group, and if the female 

 had four mammae, as is affirmed to be the case in 

 the Cape Dauw, we think the fact would not have 

 escaped the notice of Dr. Smith when he secured the 

 unborn foal, which we think belongs to the pre- 

 sent species. If this be the case, the Congo Dauw 

 extends from the Gareep along the west side of 



