142 NORTH AMERICAN FAUNA [No. 55 



CALLOSPERMOPHILUS CHRYSODEIRUS TRINITATIS MEKRIAM 

 TAWNY-MANTLED GROUND SQUIRREL 



Callospermophilus clirysodeirus trinitatis Merriam, Biol. Soc. Wash. Proc. 14: 

 126, 1901. 



Type. Collected in Trinity Mountains, east of Hoopa Valley, Calif., by 

 Vernon Bailey in 1898. 



General characters. Size of typical clirysodeirus or slightly larger; colors 

 duller and darker. Summer pelage, crown and most of mantle tawny, be> 

 coming ochraceous tawny on sides of neck ; back, rump, and hams rusty gray ; 

 two black stripes enclosing buffy stripe along each side of back; sides and 

 lower parts buffy ochraceous ; lower surface of tail dark tawny, top and mar- 

 gins black, long hairs tipped with ochraceous. Winter pelage grayer, less tawny. 

 Young as in summer. 



Measurements. Average of 6 specimens from type locality: Total length, 

 283 mm; tail, 100; foot, 43; ear (dry), 16. 



Distribution and habitat. These brown-mantled squirrels occupy 

 the Yolla Bolly, Trinity, and Siskiyou Mountains of northwestern 

 California and southwestern Oregon, the northernmost specimens be- 

 ing from the Siskiyous and a ridge near Briggs Creek west of Grants 

 Pass (fig. 24). In 1909 Hollister reported them common all along 

 the summit of the Siskiyous from 5,000 to 7,000 feet, and specimens 

 were collected on White Mountain Peak. 



General habits. In no particular does there seem to be any dif- 

 ference in habits from typical Callospermophilus chrysodeirus, but 

 owing to their limited range they have been much less studied. In 

 1897 Loring reported them as common in the Siskiyou Mountains, 

 living under logs, rocks, and stone piles along the roads, and sitting 

 on logs or stumps until approached within a few feet before dodging 

 into their holes. In 1909 Hollister in the western part of the range 

 found them very wild and hard to approach within shotgun range, 

 but at that time they were very fat and evidently ready for 

 hibernation. 



CALLOSPERMOPHILUS CHRYSODEIRUS CONNECTENS HOWELL 

 COPPERHEAD GBOUND SQUIRREL 



Callospermophilus ohrysodeirus connectens Howell, Jour. Mammal. 12: 161, 

 1931. 



Type. Collected at Homestead, Oreg., June 1, 1916, by Harry H. Sheldon. 



General characters. Size and general appearance of the golden-mantled 

 ground squirrel but slightly darker over head and shoulders, more russet and 

 less golden yellow. Back more vinaceous, less ochraceous ; lower surface of tail 

 cinnamon brown but not so dark a brown as in Callospermophilii'S cast'anurus. 

 In summer pelage, head, ears, shoulders, and sides of neck russet, shading on 

 sides of face and neck to cinnamon-buff, nape and fore back more brownish ; 

 sides of body and feet pinkish buff; two light dorsal stripes creamy white, 

 bordered on each side by shorter black stripes of the same width ; tail cinnamon 

 below, dusky above ; lower parts whitish. 



Measurements. Type, adult male: Total length, 275 mm; tail, 95; foot, 42; 

 ear from notch (dry), 14. 



Distribution and habitat. This slightly darker form of the 

 golden-mantled ground squirrel occupies the Blue Mountain section 

 of northeastern Oregon and southeastern Washington but varies 

 somewhat within this range. It may have no direct connection in 

 range with the parent species but is not widely separated if at all. 

 In zonal range it is mainly Transition and to some extent Canadian. 



