UNIVERSITY OF CALIFORNIA 



IGRINNELL-STORERI PLATE 24 







- t . V '^ \ •% W» ^ A . 



The ('alii()r!ii;i l>;iil<i('i- and its work. 



(I. Fresh burrow on tho jilains south of Lagraiifje, Deeembi-r 15, 191;"). 

 h. Adult in trap, Tiiohimnc Meadows, July 11, 1915. 

 c. Young animal in burrow, near Mono Lake, June 25, 1916. 

 See text, p. 92. 



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