MURID^ 103 



tion, and are common in a few places in Arizona, but rare on 

 the California side of the Colorado River. Herbert Brown 

 found them about Yuma in bottom lands thickly overgrown with 

 weeds and cockle burs. 



Onychomys torridus tularensis Merriam. (Of Tulare.) 



TULARE GRASSHOPPER MOUSE. 



Small; above pale drab gray barely tinged with buffy. 



Length about 143 mm. (5.65 inches); tail vertebrae 50 

 (2) ; hind foot 21 (.83). 



T!ype locality, Bakersfield, California. 



Range, the Tulare Basin and vicinity ; apparently not com- 

 mon. 



Onychomys torridus longicaudus Merriam. (Long — 



tail.) 



LONG-TAILED GRASSHOPPER MOUSE. 



"Above cinnamon-fawn well mixed with black tipped hairs ; 

 ears small". 



Length .145 mm. (5-70 inches); tail vertebrae 55 (2.15); 

 hind foot 20 (.78) ; ear from crown 10 (.40) ; in dry skin. 



Type locality, St. George, Utah. 



An Onychomys occurs from' Owen Valley and Death Valley 

 eastward which I suppose to be longicaudus, but having no ex- 

 amples I may be mistaken in the species. 



Genus Peromyscus Gloger. (Pouch — little mouse.) 

 Upper incirsors narrow; posterior molars somewhat smaller 

 than the others; coronoid process of lower jaw smalll and low; 

 tail tapering, shorter than head and body in some species, longer 

 in others; pelage not harsh nor bristly. 



Peromyscus texanus gambeli Baird. (For Dr. Wm. 



Gambel.) 



GAMBEL MOUSE. 



Tail shorter than head and body. Above variable in color 



