U.S. NATIONAL MUSEUM 



BULLETIN 275. PLATE 6 







Rock-strewn plain of the Gebel Nefusa, 12 kilometers south of Chicla, Tripolitania. The 

 fat-tailed sand rat (Pachyuromys duprasi) prefers these areas where the surface is covered 

 with coarse pebbles and the vegetative cover is sparse and localized, May 1962. 



Large mound with dense cover of Calligonum near the oasis of Tazerbo, Cyrenaica. These 

 outlying hummocks of the Saharan oases provide shelter and sustenance for several 

 species of desert rodents, especially for jerboas (Jaculus jaculus) and gerbils (Gerbillus 

 gerbillus), April 1962. 



