386 Mr, 0. Thomas on 



the caama type, with V-shaped horns. Another similar 

 specimen from the Bahr el Gazal, also female, was sent to 

 the ]\Iuseum in 1884 by Mr. F. Bohndoi-fF. Noticing their 

 relationsliip to B. caama^ about a year ago I made many 

 endeavours to find out what had become of Petherick's male 

 specimens or to get hold of another, but without avail. That 

 a caainnAW^Q species occurred in this region was clear, for 

 Ileuglin* also speaks of the occurrence on the White Nile 

 of a llartebeest which " scheint mit A. caama zusammen- 

 zufi\llen," and it was therefore with much pleasure that in 

 Mr. Jackson's hartebeest I recognized a species very possibly 

 identical with that observed by Petherick, Heuglin, and 

 Bohndorff. At the same time it must be said that while the 

 horns of Petherick and BohndorfF's specimens correspond 

 with small and slender female caa??ia horns, those of Mr. Jack- 

 son's skull equal or exceed in size the very largest male 

 caama horns that I have seen. Male specimens, with skins, 

 from the Upper Nile are therefore needed to confirm or upset 

 tins identification. 



1 propose to call the species 



Bubalis JacJcsoni^ sp. n. 



Similar in essential characters, in size and proportion of 

 skull, and in the curves and direction of the horns to the 

 Houth-African B. caama, but distinguished by the uniform 

 pale colour of the face, which matches that of B. tora and is 

 entirely without any trace of the black frontal and nasal 

 patches characteristic of that species. Hair of nasal region 

 reversed upwards for only about 4 or 4^ inches from tiie 

 hairy point between the nostrils t- 



Hah. Country between Lake Victoria Nyanza and Lake 

 Naivasha. Its northward range depends on the correctness 

 of my identification of Heuglin's and Petherick's animals with 

 it, and this must of course remain doubtful until further 

 information is obtained. 



* N.O.-Afr. ii. p. 123 (1877). 



t The extent ot the reversed hair on the face seems to bo character- 

 istic of the ditlerent species of the genns. Thus it extends up to between 

 the eyes in />'. caama, or even to the horns, while in B. major, tora, and 

 Cokei it is confined to about 1| or 2 inches on the tip of the muzzle. In 

 Ji. Lichtciistcini it is reversed on the nasal region, points downwards on 

 the anterior frontal, and is then again reversed up to the ba.-e of the 

 liorns. No doubt larger series tlian T have been able to examine will 

 show these characters to be more or less variable ; but the species are all 

 so closely allied to one another that au}- characters which may help to 

 separate them are worthy of mention. 



