PLATE 29 



Yoi-emite Pocket Gopher in action, showing (c) method of digging with fore feet, 

 (b, d) manner in which earth is pushed out from burrow, and (o) way in which gopher 

 keeps part of its body in the burrow when alert to events above ground. The prominent 

 forward-projecting vibrissae ("whiskers"'), the small eyes placed on upper surface 

 of head, and the small ears are shov.n to ndvantage. For discussion see text, p. 137. 



[698] 



