PLATE 21 



Fig. 4. Drifting sand environment near Blythe Junction, Riverside County, 

 California. Home of Uma notata; kit fox scratehings, and burrows of Citellus 

 tereticaudus, in foreground. 



Fig. 5. Small wash in rocky mesa environment at south end of Turtle 

 Mountains. Caves in foreground inhabited by Neotoma, and by Sceloporus 

 magister. 



[542] 



