U.S. NATIONAL MUSEUM 



BULLETIN 275. PLATE 3 











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Fresh talus and burrow entrances of the sand rat {Psammomys obesus) in a large hummock 

 on the coastal plain near Agedabia, Cyrenaica, May 1962. 





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Bouldcr-strcwn slopes such as these of the escarpment near Gharian provide ideal habitat 

 for gundis (Ctenodactylus gundi), March 1962. 



