160 CALIFORNIA MAMMALS. 



mens have been taken in Reche Canon, a few miles south of San 

 Bernardino. Their habits appear to be hke those of the species 

 in general. 



Dipodomys merriami nitratus Merriam. 



KEELER POCKET-RAT. 



Similar to simioliis; averaging smaller; hind feet longer; 

 dusky markings obsolete; hairs of back not tipped with black. 

 Type locality, Keeler, Inyo County, California. 

 Habitat, Owen Valley. 



Dipodomys merriami nitratoides Merriam. (Re- 

 sembling nitratus. ) 



TULARE POCKET-RAT. 



"Similar to nitratus in size and and color but with strongly 

 marked facial crescents meeting over bridge of nose ; ears smal- 

 ler." 



Type locality, Tipton, Tulare County, California. 



Dipodomys merriami exilis Merriam. (Smallest.) 



LEAST POCKET-RAT. 



Upper parts nearly uniform clay-color, darkened with sepia 

 from abundant admixture of black tipped hairs, and darkest on 

 the head ; sides tinged with ochraceous buff ; black crescents at 

 base of whiskers sharply defined and meeting on the bridge of the 

 nose; upper and lower tail stripes sooty blackish, meeting along 

 terminal third, thus interrupting the white side stripes. 



Length about 22y mm. (9 inches) ; tail vertebrfe 136 

 (5.35); hind foot 35 (1.38). 



Type locality, Fresno, California. 



Genus Microdipodops Merriam. (Small— two footed— 



like.) 

 General appearance similar to that of a large thickset 



