ALLEN: MAMMALS OF THE PHILLIPS PALESTINE EXPEDITION. 7 



5.6. Posteriorly the inflated mastoids project slightly beyond the 

 occipital region. 



Gerbillus gerbillus (Olivier). 



Tawny Gerbil. 



Dipus gerbillus Olivier, Voy. Egypt., 1801, 3, p. 157, pi. 28; Bull. Soc. philom. 

 Paris, 1801, 2, p. 121. 



This brightly colored gerbil was first trapped at Wady Shurandel 

 in the Sinai region. Other specimens were taken at the head of the 

 Gulf of Akaba to the northeast, namely at Akaba and Suweira, but 

 none has been recorded to the northward of these places. 



DiPODiLLUS QUADRiMACULATUS Lataste. 



Four-spotted Gerbil. 



Dipodillus quadrimaculatus Lataste, Le naturaliste, 1882, 4, p. 27. 



A series of six specimens from Akaba, at the head of the Gulf of the 

 same name, appears to represent this species, and extends its known 

 range somewhat to the eastward. Its apparent absence from the high 

 rough country of the interior of the Sinai peninsula may indicate that 

 it is confined to the low sandy areas along the coast. 



Dipodillus dasyuroides Nehring. 



Nehring's Smooth-footed Gerbil. 



Dipodillus dasyuroides Nehring, Sitzb. Ges. naturf. freunde Berlin, 1901, p. 173. 



A series of thirteen skins, old and young, seems referable to Neh- 

 ring's species, the type of which is from Mount Moab, east of the 

 southern end of the Dead Sea. The chief color character distinguish- 

 ing it from Wagner's dasyurus of western Arabia is said to be the 

 yellowish instead of pure white area above the eyes. In the series 

 before me there is some variation in tint, chiefly due to the greater or 

 less suffusion of the upper parts with buffy. This seems partly a 

 matter of age, since the young and subadults are less buffy, the pale 

 area above the eyes is dirty white, and the ventral side of the tail is 



