160 EINAR LONNBBRG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 



Total length 



Condylobasal length 



Basioranial » 



Zygomatic width 



Posterior brim of orbit to gnathion 



» » » » » anterior alveolar edge . . 



Length of nasals 



Tip of nasals to gnathion 



Length of upper molar series 



Breadth across posterior orbital walls 



Distance between outer sides of horn cores basally 

 Combined breadth of nasals 



The cranial measurements of this race are recorded in the accompanying table 

 of measurements. As can be seen from the same, one of the skulls measured (ter- 

 med »c c?» in the table) is very much smaller than the two typical males {a, b), in 

 spite of the fact that it is fully adult. The skull c looks also very different when 

 compared with the others especially because the distance between the horns is smaller 

 and the nasals shorter. I am, however, inclined to regard it as ati individual aber- 

 ration, a dwarf, because the skin is quite like the other male skins except that the 

 tuft is smaller and the black tips to the hairs of its posterior portion a little more 

 conspicuous than in the typical males. But it is not excluded that it represents a 

 smaller but related race as it was found at another locality, although not much 

 distant. 



This small buck was shot at Njoro a watering place belonging to the Rendiles 

 about 2 days march north of Guaso Nyiri (^'/a 1911). In the same neighbourhood a 

 female Dikdik was also shot, but this was unfortunately so young that its dimensions 

 are of little value. 



These Dikdiks were common in the thornbush country north of Guaso Nyiri below 



Chanler Palls. In habits they resembled the other species. A few times I heard 



^ them produce a kind of whistling sound hke »i i», and a snort when they were started. 



Kobus ellipsiprymnus canescens n. subsp. 



The specimen on which Ogilby based the specific name ellipsiprymnus was 

 brought from South Africa, although the exact locality hardly is known with cer- 

 tainty.^ All Waterbucks with a white line across the rump have afterwards been 



'■ The milk-molars still remain, and m^ is cutting the gum. 



= Conf. W. L. Sclatee: Mammals of South Africa. Vol. I, p. 187—188. 



