Color. Post-breeding Pelage. Head and rump gray; rest of 

 body ferruginous, under parts white, sometimes tinged with fulvous. 

 Five dark dorsal stripes black, those on either side next the center 

 one edged with rufous; median light stripes gray, outer ones white. 

 Dark facial streaks rusty brown; light streaks fulvous white: ears 

 blackish edged with rusty and bordered posteriorly with white. 

 Post-auricular patches large, white. Tail, above blackish fringed 

 with white; beneath orange rufous, bordered with black and fringed 

 with white. 



Autumn Pelage. Like the above except the whole half of the 

 posterior dorsal region is gray; anterior half rufous; flanks deeper 

 rufous, ears more reddish. 



Afeasurements. Total length, 249; tail vertebrae, 93; hind foot, 

 305- 



86. senex. [Tamias), Allen, Bull. Am. Mus. Nat. Hist., 1890, p. 83. 



Type locality. Summit of Donner Pass, Placer county, California. 



Geogr. Distr. Sierra Cascade Mountains from Farewell Bend 

 on the Des Chutes River in Oregon, south to the head waters of the 

 Merced River in Yosemite National Park. 



Genl. Char. All upper parts gray; ears small. 



Color. Breeding Pelage. Above gray; yellowish tinge on sides 

 of neck and shoulders; flanks yellowish brown; dark dorsal stripes 

 black to rusty brown, light stripes pale gray. Ventral surface 

 dull white. Facial stripes rusty brown and grayish white. Tail, 

 above blackish; below pale orange, edged with black, hairs tipped 

 with white. 



Measurements. Total length, 263; tail to end of hairs, 114; hind 

 feet, 35. 



87. speciosus. {Tamias), Allen, Bull. Am. Mus. Nat. Hist., 1890, p. 86. 



Type locality. San Bernardino Mountains, California. 



Geogr. Distr. San Bernardino and San Jacinto Mountains, Cali- 

 fornia. 



Genl. Char. Size medium or small. Similar to T. inerriami: 

 tip of tail above and below, black. 



Color. Post-breeding Pelage. Dark dorsal stripes dark brown 

 suffused with ferruginous; outer light stripe pure white; sides ferru- 

 ginous; post-auricular patches very large, white; facial stripes dis- 

 tinct; dark ones dusky, obscured with rusty; light ones white. Tail, 

 bright chestnut above obscured with black, edged with yellowish: 

 beneath chestnut with lateral border and terminal fourth black, fringe 

 yellowish. 



Breeding Pelage. Above yellowish gray with two broad white 



