PLATE :?7 



((. Yoseniite Pocket Gopher, posted to show inipoitant exteiual features, such as [iro- 

 jecting incisor teeth, lack of any "neck," short legs with heavily clawed fore feet, and 

 short nearly hairless tail. 



h. Yoseniite Pocket Gopher, showing broadness of head, fur-lined cheek pouches, 

 and white patches beneath. 



('. Yoseniite Mole, showing sharp snout, wedge-shaped head, laterally placed ' ' hands, ' ' 

 and short hairy tail. 



All % natural size; photographed from animals freshly trapped on the floor of 

 Yosemite Valley. For discussion of adaptive features of Pocket Gopher and Mole, 

 see pp. 44, 134, lo(i. 



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