7iew Species o/Gcrblllu3 and Taterillus. 149 



proectote bufFy like the general colour. Fore limbs wholly 

 ill the white area, without any darker colour on their front 

 surface. Soles less iuiired than in other membeis of Gerbillus, 

 the naked area extending from the heel along the middle 

 of the sole to the level of the base o£ the hallux, but the 

 region of the pads is closely and profusely hairy, as usual 

 in the genus. Tail at base pale buffy above, whitish below — 

 its terminal portion lost in the type. 



Skull remarkable for the great size of the bullffi, which 

 tend to recall those of Desmodillns and far exceed those of any 

 other member of tiiis genus. The j)0.sterior breadth of the 

 skull is therefore unusually great. Muzzle slender. Supra- 

 orbital beads present. Zygomatic plate more projected 

 forward than in most species of Gerbillus, and almost 

 approaching the projection chaiacteristic of Taterillus ; the 

 same is the case in G. pceba. Palatal foramina, both anterior 

 and posterior, large and well open. Bulise greatly swollen, 

 the anterior edge o£ the meatus also inflated ; a well-marked 

 vacuity just beneath the opening of the meatus. 



Dimensions of the type (measured in the fle.sh) : — 



Head and body 92 mm.; tail (00 + ) ; hind foot 30; 

 ear 15. 



Skull: greatest median length 29; greatest diagonal 

 length .SO ; condylo-incisive length 27 ; zygomatic breadth 

 16; nasals 11'2 ; interorbital breadth 6; breadth of brain- 

 case 14'3 ; breadth between outer edges of raeatal inflations 

 16*8; zygomatic plate 4'8 ; palatal foramina, anterior 5*2, 

 posterior 2"5 ; greatest horizontal diagonal diameter o£ 

 bulla 10'7 ; greatest diameter in any direction 12*2 ; upper 

 molar series 'i'2. 



Huh. Busliniau-land. Type from Tuin, near Kenhart, 

 llartebeest River, near 29° S., 21° E. 



Type. Adult male. B.M. no. 12. 1. 11. 2. Presented 

 alive by Maj. H. A. P. Littledale to the Zoological Society, 

 by whom it was transferred on death to the National 

 Collection. 



This well-marked species is readily distinguishable by its 

 greatly enlarged bullie, which tend to approach in size those 

 of Desmodillns auricularis, obtained in the same region by 

 J\Iajor Littledale. The hind feet of this animal are also 

 more naked than in other members of Gerbillus, but have, 

 however, the characteristic distal cushion which distinguishes 

 the genus I'rom Dijjodillus. 



