Bull. 1091, U. S. Dept. of Agriculture, 
plate III. 
Fig. I. — Kangaroo Rat Mound (Dipodomys s. spectabilis). 
Typical Dipodomys s. spectibilis roouni on the Rar±?e Reserve, under shelter of desert hack- 
berry ( Celtis pallida). Most dens on the reserve are located in the shelter of brush plants, 
the more important being mesquite {Prosopis velutina), cat's-claw {Acacia spp.), and the 
desert hackberry. (See also PL VIII Fig. 2.) 
Fig. 2. — Kangaroo Rat Mound (Dipodomys desertp. 
Den of Dipodomys deserti deserti, showing typical wide, low mound with numerous entrance 
holes. This species excavates its den in soft, sandy soil. The tree is a species of Dalea. 
