HOWELL — FOUB NEW GKOTJND SQUIRRELS 161 



Callospennophilus chrysodeirus connectens subsp. nov. 



Type.—Male adult, skin and skull, No. 212461, U. S. National Museum (Bio- 

 logical Survey collection) ; collected at Homestead, Oregon, June 1, 1916, by H. H. 

 Sheldon; original number, 535. 



Subspecific characters. — Similar in summer pelage to C. chrysodeirus chryso- 

 deirus, but head and mantle darker; shoulders and fore back more vinaceous (less 

 ochraceous); under side of taU paler. Similar in color to C. chrysodeirus cast- 

 anurus but under side of tail paler, and sides of face and neck paler (more ochra- 

 ceous). 



Description of type (summer pelage). — ^Head, ears, shoulders, and sides of neck 

 russet, shading on sides of face and neck to cinnamon-buff; nape and fore back 

 between the shoulders cacao brown; median dorsal area fawn color, shading to 

 army brown on rump and thighs; sides of body and feet pinkish buff; light dorsal 

 stripes creamy white, tinged with pinkish buff, bordered on each side with shorter 

 black stripes of the same width; tail beneath, cinnamon; tail above, mixed with 

 fuscous-black; underparts grayish white, washed with pale pinkish buff. 



Measurements. — Type (cf adult): Total length, 275; tail vertebrae, 95; hind 

 foot, 42; ear from notch (dry), 14. Average of 16 adults (7 males, 9 females) 

 266; 91.9; 41.2; 14.3. Skull: (Type): Greatest length, 44.1; palatal length, 20 

 zygomatic breadth, 27.1; cranial breadth, 19.1; least interorbital breadth, 9.6 

 least postorbital breadth, 12.3; length of nasals, 14.8; maxillary toothrow, 8.8. 



Range. — The Blue Mountains region of northeastern Oregon and southeastern 

 Washington. 



Callospermophilus chrysodeirus mitratus subsp. nov. 



Type.—MaXe adult, skin and skull. No. 138125, U. S. National Museum (Bio- 

 logical Survey collection) ; collected on South Yolla BoUy Mountain, California, 

 July 30, 1905, by J. F. Ferry; original number, 13. 



Subspecific characters. — Similar to Callospermophilus c. chrysodeirus, but upper- 

 parts paler and more grayish (less brownish), especially on the rump; mantle 

 darker; tail averaging longer and darker beneath; hind feet longer; skull larger. 

 Compared with trinitatis: Upperparts much paler; mantle darker and more 

 extensive; skull broader across zygomata; external measurements smaller. 



Description of type (summer pelage). — ^Head and mantle russet (this color 

 extending to the shoulders and fore back), shaded on sides with ochraceous-tawny ; 

 throat and sides of lips warm buff; median dorsal area and rump smoke gray; 

 light dorsal stripes creamy white, bordered on each side with black stripes of 

 about the same width; sides of body pale pinkish buff; feet cinnamon-buff; tail 

 above, fuscous-black, mixed with warm buff; tail beneath, deep tawny, bordered 

 with fuscous-black, and edged with warm buff; underparts pinkish buff. 



Measurements.— Type (cfadult): Total length, 282; tail vertebrae, 110; hind 

 foot, 42; ear from notch (dry), 14.5. Average of 10 adults (5 males, 5 females) 

 from type region: 269; 94.1; 41.4; 14.5. Skull (of type): Greatest length, 43.6; 

 palatal length, 20.5; zygomatic breadth, 28; cranial breadth, 20.8; least inter- 

 orbital breadth, 9.9; least postorbital breadth, 12.7; length of nasals, 15.9; maxil- 

 lary toothrow, 7.9. 



Range. — Mountain ranges of northern California, from Glenn County north 

 to southern Siskiyou County. 



