Merriam New Mammals from the United States. 77 



Measurements. Type specimen ( $ yg. ad.): total length 243; tail 

 vertebrae 64; hind foot 31. Skull: basal length 31.5; basilar length of 

 hensel 30.5; zygomatic breadth 17.5; interorbital breadth 7.5; palatal 

 length 13; postpalatal length 18; toothrow from front of canine to back 

 of last molar 9. 



Eutamias canicaudus sp. nov. 



Type from Spokane, State of Washington. No. f-it 9 ad., U. S. 

 National Museum, Biological Survey Collection. April 11, 1891. C. P. 

 Streator. Original No. 639. 



Characters. Size rather large; ears medium or rather small; tail 

 rather long; general color in spring pelage buffy gray, tail grizzled gray 

 decidedly grayer (less red) than in neighboring species; outer pair of 

 light stripes strikingly white. 



Color. Spring pelage (=lef t over winter pelage) : upperparts, includ 

 ing middle pair of light stripes vinaceous gray, with enough admixture 

 of white-tipped hairs to produce a hoary effect; median, dorsal and lat 

 eral pair of black stripes (5 in all) pure black, the outer pair slightly 

 washed with fulvous; upperside of tail grizzled gray, edged with whit 

 ish; underside with a median buffy band bordered with black and edged 

 with whitish. Post-breeding pelage: neck, sides and edges of stripes 

 washed with ochraceous or light fulvous. 



Remarks. This handsome new species with showy white side stripe is 

 at all seasons easily distinguished from its neighbors, felix and ajfinis by 

 the color of the tail, the general tone of which is gray. Both of the 

 others have strikingly red tails, the underside and edges being intense 

 fulvous or ferruginous. The geographic range of the gray-tail chip 

 munk so far as now known is the ponderosa pine forest of the -Transi 

 tion zone in northern Idaho and the adjoining eastern edge of the State 

 of Washington. 



Measurements. Type (9 ad.): total length 228; tail vertebrae 98; 

 hind foot 32. Average of 6 adults from type locality: total length 229; 

 tail vertebrae 104; hind foot 34. 



Citellus grammurus utah subsp. nov. 



Type from foot of Wasatch Mountains near Ogden, Utah. No. f ff f 

 9 ad., Merriam Collection. October 10, 1888. Vernon Bailey. Orig 

 inal No. 291. 



Characters. Similar to grammurus but smaller, ears larger, back 

 much redder; head in late summer pelage much more reddish brown; 

 tail darker; nasal bones anteriorly averaging broader, more inflated and 

 more truncate; also slightly longer and projecting posteriorly behind 

 premaxillre; fronts of incisors paler yellow (in grammurus more orange). 



