1915.] 



MAEMOTA FLAVIVENTEIS GKOUP. 



37 



Color. — General tone of upperparts vinaceous- or orange-cinnamon, 

 hazel; chestnut-brown, or yandyke brown; underfur of upperparts 

 at base mouse gray, fuscous, bister, clove brown, or blackish brown, 

 succeeded by pinkish-, ochraceous-, or cinnamon-buff, pinkish-, vina- 

 ceous-, or orange-cinnamon, cartridge- or tilleul-buff, buffy white, 

 hazel, or pale russet; long hairs chestnut-brown, olive-brown, hazel, 

 or black, tipped with hght buff, ochraceous- or cinnamon-buff, or 

 white; top of head and face cinnamon-drab, chestnut, bay, chestnut-, 

 Vandyke-, or clove-brown, or black; sides of face chestnut-brown or 

 blackish brown, more or less mixed with white or buff ; face usually 

 more or less extensively marked with a band or patch of white or 

 buff between the eyes (nearly obsolete in ohscura) ; borders of nose, 

 hps, and chin white or ochraceous-buff ; sides of neck usually with 

 conspicuous patches of ochraceous-buff or cinnamon-buff (nearly 

 obsolete in ohscura) ; underparts ochraceous-buff, ochraceous-tawny, 

 hazel, chestnut-, kaiser-, or blackLsh-brown, often varied with 

 russet, Sanford's brown, tawny, or pale buff; fore legs ochraceous- 

 buff, tawny, hazel, russet, or kaiser brown, the feet chestnut-brown, 

 russet, auburn, pinkish cinnamon, or cinnamon-buff; hind legs 

 ochraceous-buff', tawny, or hazel (rarely brownish), the feet vary- 

 ing from Hght buff or pinkish cinnamon to russet, hazel, chestnut- 

 brown, or blackish brown; tail above, hazel, tawny, chestnut-brown, 

 blackish brown, or (in faded pelage) clay color; beneath, blackish 

 brown or chestnut-brown; ears usually some shade of buff, bordered 

 with dark brown. 



Geographic distribution. — From the interior valleys of southern 

 British Columbia south in the Great Basin to the Toyabe Mountains, 

 Nev., and Parawan Mountains, Utah; in the Cascade-Sierra system, 

 from Mount Hood, Oreg., to vicinity of Owens Lake, Cal.; and in 

 the Eocky Mountain system, from Flathead Lake, Mont., to the 

 Pecos Eiver Mountains, N. Mex.;^ east to the Black Hills, S. Dak.; 

 confined to mountains, foothills, and rocky canyons, not occurring 

 on the plains proper. (See fig. 2.) 



Reraarks. — Marmota jiaviventris usually may be readily distin- 

 guished from M. monax by the more ochraceous coloration, by the 

 buffy, hazel, or tawny legs and feet (the latter usually black or black- 

 ish brown in monax), and by the presence of white or buffy face 

 markings; occasional specimens of M. Jiaviventris ohscura and M. 

 Jiaviventris luteola rather closely resemble certain specimens of the 

 monax group, but always lack the deep reddish hairs on the fore legs. 



1 Formerly to the Manzano and Datil Mountains (vicinity of Old Fort Tularosa). 



