

Merriam Four New Grasshopper Mice. 125 



white. Upperparts buffy, deepest on rump ; face from nose to eyes whitish, 

 faintly washed with bun ; cheeks, legs, and thighs snow-white like under- 

 parts. 



Skull, compared with that of pallescens, smaller and weaker,. braincase 

 narrower, more rounded (less flattened on top) ; rostrum weaker; zygomata 

 much narrower and rounded off anteriorly, slightly spreading posteriorly. 

 [In pallescens as in leucogaster they stand out much farther and more 

 squarely, enclosing a much larger orbital fossa.] 



Measurements. Type specimen: Total length. 160; tail vertebrae, 60; 

 hind foot, 23. 



Remarks. The type specimen, which is in fresh winter pelage, has long 

 soft fur and is the most beautiful mouse I have ever seen. With it are two 

 young-adults, not quite full grown, from the same locality. One of these 

 is like the type, only not quite so pale ; the other has the upperparts pale 

 smoke-gray slightly suffused with buffy. 



