86 
Annals or the Transvaal Museum. 
under surface of the body pure white throughout; fore feet coloured like 
the flanks, the fingers, hind feet, and sides of limbs pure white. The 
hairs and the fore and hind feet are short and crisp, extending as bristles 
on the toes beyond the tips of the claws, which are short, strong, and 
much curved. Entire tail dark brown, sparingly covered with short 
brown and a few white hairs. Feet very short. Ears rounded, lightly 
covered for the greater part with tawny brown hairs. Whiskers black, 
with lighter coloured tips, very long, measuring about 38 mm. in the 
longest. Fur of the back about 8 mm., the longer projecting bristles 
about 14. 
Type: Old <J, Zoutpan. Pretoria District, 22.12.09. “H. and B. 137, 
tail 137, hind foot 18, ear 20.” Skull: gr. leng. 31 • 6, bas. leng. 25 * 8, 
zyg. br. 16*4, int. orb. br. 4*5, br. brain case 13*7, mol. ser. 4*4, diastema 
8*5, bullae 7*2, nasals 11*8 x 3 *5. 
This specimen was captured at the foot of an old hollow thorn tree, 
in which, no doubt, it had its habitation. I have named it after my friend 
Mr. Ernest Mogg, who was with me on the occasion when this specimen 
was taken and on many other collecting excursions. 
155. Mus, spec. ? 
1 yg. ad. Magaliesberg (Roberts). 
This specimen differs from all others in the collection, but not being 
quite adult, I have left the question of its identity open until more 
specimens are obtained. 
156. Mus paedulcus, Sund. 
4 Port St. Johns (Swinny). 
157. Mus colonus , Brants. 
1 <£, 3 $, 1 juv., Port St. Johns (Swinny). 
158. Mus caffer, A. Sm. 
4 <J, 1 $, 2 juv., Port St. Johns (Swinny). 
With regard to this and the two preceding species, the series of skins 
call for some comment. The series is so small in each case that I am not 
at all sure that all the specimens are not referable to one and the same 
species. The four males referred to paedulcus are in general effect on the 
upper surface of body dull tawny with a spare admixture of long black 
bristles, which show up clearly on the lower back; the smallest specimen 
has the molars still unworn, and the largest very much worn. 
In the series of skins of colonus , one of the females is coloured like 
the four males of paedulcus , and, though its teeth are still unworn, at 
least seven pairs of mammae can be counted on the flanks ; but its skull 
and measurements are precisely those of the other specimens of colonus. 
The four specimens are much blacker on the upper surface of body than in 
those of paedulcus. None of the skulls exhibit signs of age. 
In the series of skins of caffer , none of the teeth are worn, and two 
are obviously very young. In them the hair is shorter and closer and of a 
more uniform slate grey in both the small and large specimens. But the 
smallest specimen in the whole of the three series is a very young one 
which is coloured like the specimens of colonus , and also has long silky 
hair. Were it not for this specimen I should have placed all the specimens 
as being of one species, the three series representing as many stages of 
growth. The molar series, it will be observed, is the same size throughout, 
