Genl. Char. Larger than T. iiiiriimiis, and colors darker. 



Color. Brcedini; Pi-lagc. Above gra}' mixed with rufous and 

 black ; flanks faintly washed with pale buff ; under parts graj'ish 

 white. Dark dorsal stripes black, black and rusty, and rusty yellow- 

 ish, chestnut brown on outer pair. Light stripes pale gray, outer ones 

 white. Light facial stripes grayish white, dark ones pale dusky 

 brown. Tail above black and yellowish white : below deep buff bor- 

 dered with black and fringed with yellowish white. Post-auricular 

 patches small, yellowish white. 



Posl-hreeding Pelage. Above gray, rusty anti black ; llauks }el- 

 lowish brown, under parts white tinged with buff. Median dorsal 

 stripe black edged with rusty, rest seal brown and rustv : median 

 light ones gray and rusty yellow, outer pair white tinged with yellow. 



Measurements. Total length, 203 ; tail vertebra, go : tail to end of 

 hairs, 103. 



b.—melanurus. {Tamias), Merr., N. Am. Faun., No. 4, I^yo. p. 22. 



Type loeality. Blackfoot Idaho. 



(ieogr. Distr. Known only from t\ pe locality. 



Genl. Char. Similar to T. in. eonsohrinus ; tail beneath black. 



Color. Like T. in. consobrintis, but tail beneath black bordered 

 with pale \ellowish. 



Afeasiirenients. Tail vertebra', 84 ; hind foot, J9. 



c. pictus. {Tamias), Allen, Bull. Am. Mus. Xat. Hist., iSyo. p. 115. 



Type loeality. Kelton, Utah. 



Geogr. Distr. Western border of Great Salt Lake westward, and 

 from southern Utah and southern Nevada to the Snake Plains of 

 eastern Washington. 



Genl. Char. Similar to T. minimus; colors pallid. 



Colors. Post-breeding Pelage. Above slate gray : Ifanks pale yel- 

 lowish buff ; shoulders and hips pale slate gray. Median dark dorsal 

 streaks black ; others seal brown edged with rufous : median light 

 stripes slate gray, outer pair white. Tail above black and yellowish 

 gray ; below dark yellowish buff, bordered with black and fringed 

 with yellowish gray. 



.Measurements. Total length, 219; tail vertebra-. .S9; hind foot, 29. 



d. iih'inus. (Tamias), Merr., Proc. Biol. Soc. Wash., 1893, p. 137. 



Type loeality. Big Cottonwood Meadows, high Sierras, Califor- 

 nia, south of Mt. Whitney. 



Geogr. Distr. Alpine summit of high Sierras, California. 



Genl. Char. Similar to T. m. pictus, but paler; tail broaiier and 

 more hoary above, black tipped above and below. 



Color, .luti/mn Pelage. Above hoary gray : flanks buff\ ocli- 



