46 On Two new Gerbils from Eijypi. 



black-bordered ears, and the inclination to yellowish stain on 

 the white of the nnderside. The extent of the hair on the 

 soles of the feet and the slight development of the brusli- 

 hairs towards the end of the tail are also much as in that 

 species. In size it closely approaches G. gerhillus, Oliv., but 

 the ears are longer. 



The type of the species is a skin (number 92. 7. 1. 5 in the 

 British Museum) collected and presented by the late Dr. Jolin 

 Anderson ; it was obtained, as Avere all the other specimens, 

 at Mandara, E. of Alexandria. 



^leasurements (taken from specimens preserved in al- 

 cohol) : — 



6. 6. $. 2. 



mm. mm. mm. mm. 



Head and body 8.5 89 89 87 



Tail .' 125 117 120 115 



Hind foot 27 27 27-5 27 



Ear 15-6 16 15-5 lo .5 



A three-parts grown female has the hind foot 2-3 millim. in 

 length. 



Skull measurements : — 



mm. mm. mm. 



Greatest length 30 30 30 



Greatest breadth 16 10 16 



.Supraorbital constriction 5*5 6 6*9 



Length of nasals 12 12 12 



Basal length 25 24 25 



Lengtli of incisive foramina 5*5 . . 55 



Length of molar series 4-3 4"3 4*4 



The skull is rather larger than that of O. gerbillus and 

 is readily distinguished by its longer nasal portion, more 

 expanded maxillary portion of the zygomata, larger teeth, and 

 longer incisive foramina. 



Dipodillus amcemis, sp. n. 



Size small, form compact j ears short ; tail about half as 

 long again as the head and body; hind feet long, with the 

 three proximal pads very ill-defined. Col )ur very dark, the 

 fur mouse-grey tij)ped with reddish fawn, the latter colour 

 clearer on the sides; a very pale, almost white, patch on the 

 buttocks. Tail dark blackish above, fawn beneath, the 

 pencil and crest black-brown. The face is handsomely 

 marked ; the tip of the nose and the tront portion of the 

 moustachial area is pale to white ; a very distinct dark nose- 

 spot commences immediately behind the nostrils, gradually 

 fading away into the general rich colour of the forehead ; 



