Mammals from Somaliland. 101 



Hah. Red sandy country of Central Somali. Type from 

 Gerlogobi Wells. 



Type. Old female. B.M. no. 4. 5. 9, 14. Original num- 

 ber 138. Collected 25th January, 1904. 



This ground-squirrel differs strikingly from the ordinarj' 

 Somali form by its wholly rufous colour and rufous feet, that 

 animal having a grizzled yellowish area on the back and 

 white feet. But there are some specimens showing a certain 

 amount of rufous on the feet, and on the analogy of the red 

 niungoose it would seem probable that intermediate links will 

 be found to occur, so that for the present I regard it only as 

 a subspecies. 



On the same analogy I think it probable that the N. Somali 

 duhagaUa, Heugl., will be found to be subspecifically distin- 

 guishable from the original Abyssinian rutilus. 



11. Gerhillus (s. s.) Dunni, sp. n. 



? . 139. Gerlogobi, 26th January, 1904. Type. 

 A typical hairy-footed Gerhillus, of a darker colour than 

 the bright sandy forms hitherto known. 



General colour dark sandy fawn, not unlike some of the 

 Dipodilli, such as D. Harwoodi, Tlios. Dorsal area darker, 

 more slaty, but this may be due to the specimen not having 

 attained its full pelage. Supraorbital and postauricular 

 patches well marked. Under surface less thickly haired than 

 usual, pure white, not very sharply defined laterally. Arms 

 wholly within the white area which passes across tiie shoulder, 

 but some of the hairs on the outer side of the forearms in- 

 distinctly buffy ; hands pure white; claws longer than in the 

 allied species. Hind limbs externally sandy fawn like the 

 body, the inner aspect and whole of the feet white ; soles with 

 the usual hairy cushions of restricted Oerhillas, but their 

 proximal halves are naked, the hairy part beginning along 

 tlie middle line halfway along the metatarsus. Tail of 

 average length, sandy coloured for its proximal half above 

 and below, then blackened and crested above to the delicate 

 terminal pencil, white below. 

 Skull as usual in this group. 



Dimensions of the type (measured in the flesh) : — - 

 Head and body 90 mm. ; tail 120 ; hind foot 28 ; ear 13. 

 Skull : greatest length 30*3 ; basilar length 22 ; nasals 

 10'7 ; interorbital breadth 6; palatal foramina 4'7; length 

 of bulla 11*3 ; length of upper molar series 4"1. 

 Hah. and type as above. 

 This pretty little gerbille, which I have named after the 



