400 Mr. G. Dollraan on 



Hub. Leliutitung, Kalahari. Altitude 3300 feet. 



Ti/pe. Adult female. B.M. no. 10.6.3.69. Original 

 number 13. Collected May 18th, 1909. 



This Kalahari Arvicanthis is distinguished at once from 

 all the other members of the group by the extreme paleness 

 of the general colour of the dorsal surface ; the only form at 

 all approacliing this condition is A. p. cinereus, Thos., where 

 the general colour of the upper surface is pale slaty grey, 

 very different from the light sandy coloration of tliis desert 

 form. 



" Arvicanthis is a very common genus both at Kururaan 

 and on the Modder River, but not at all common in the 

 Kalahari, and only met with near water. I have never seen 

 this mouse far from water. They are diurnal." 



25. Oeorychus lugardi^ de Wint. 



(?. 2; ? . 3, 10. Molopo River. 

 <J. 26. Lehutitung. 

 ? . 73. Mababe Flats, Ngamiland. 



" Georychus is plentiful throughout the whole Kalahari. 

 I have seen their mounds 100 miles from water." 



26. Lepus ochropus kalahan'cus, subsp. n. 



A pale greyish-buff form of Lepus ochropus. 



(Size and proportions as in L. ochropus. General colour of 

 upper surface pale greyish white, faintly tinged with buflf 

 (putty-colour no. 1, ' Repertoire de Couleurs ') and finely 

 speckled with black. Shoulders and anterior back lighter in 

 colour than hind portion of body, where the black speckling 

 is more in evidence. Flanks rather lighter in colour than 

 rest of upper parts, gradually turning yellowish towards the 

 ventral surface, a pale yellow area separating the white 

 underparts from the greyish flanks, as in L. ochropus, but 

 here the yellow is very much lighter in colour (flesh-colour 

 no. 2, 'Repertoire'). Individual hairs of back with whitish 

 bases, the colour changing to dark brownish black towards 

 the middle ; apical portions bicoloured, subterminal rings 

 buffish white, tips blackish brown. Some of the longer hairs 

 on the back witli white tips. Hairs on flanks with white 

 bases and buffish-white tips, a few of the hairs with black 

 tips. Nape of neck, behind ears, pale huffish white, a good 

 deal less yellowish than in L. ochrojnis. Forehead and back 



