SUPPLEMENT 



1 



THE BLACK RHINOCEROS 



(Page 25) 



In a paper published in the Proceedings of the Zoological Society of 

 London for 1909 (p. 198) Dr. E. L. Trouessart suggested that the 

 type of horn described as Rhinoceros holmwoodi is referable to the 

 northern race of the white rhinoceros {R. simus cottoni). In the Field 

 for 1909 (vol. civ. p. 193) I have, however, given reasons in support of 

 the opinion that the long and slender East African horns of the 

 holmwoodi type are referable to a local form of the black rhinoceros ; 

 and since the publication of that notice I have obtained additional 

 evidence in favour of the same view. The typical specimen was 

 purchased at Zanzibar, but in a pair from British East Africa, 

 presented by Dr. Ansorge to the British Museum, the front horn has the 

 same general character, thereby indicating that this district is the 

 habitat of R. bicornis holmwoodi. 



In Count Joseph Potocki's Sport in Sonuililand {i goo, p. 82) the 

 name sovialiensis was applied to the Somali rhinoceros, and although 

 no diagnosis was given, the fact that the name is accompanied by a 

 plate of the animal entitles it to recognition. That the Somali 

 rhinoceros should rank as a local race (i?. bicornis sovialiensis) has been 

 demonstrated by myself in the Proceedings of the Zoological Society 

 for 191 1, p. 958, where it is shown that the skull, in comparison with 

 an East African specimen, is distinguished — in addition to its inferior 

 size — by its relatively narrow form. 



THE BONTE-OUAGGA 



(Page 50) 



Specimens collected in 19 10 by Messrs. Selous and McMillan show 

 that the bonte-quagga, or zebra, inhabiting the Guasengishu plateau 

 of East Africa is more or less completely maneless, lacking even the 

 fore-lock. This gives a very remarkable appearance, the ears standing 

 out from the head like horns instead of being connected by means of 

 the mane and fore-lock. These Guasengishu bonte-quaggas cannot, 

 however, be regarded as even racially distinct from Eqnus burcJielli 

 granti, since some examples from the Athi plains — the typical locality 

 of that race — have the mane much less developed than in other 

 representatives of the species. 



