206 Merriam The Chipmunks of the Genus Eutamias. 



darker; tail more strongly fulvous, particularly on upper sur 

 face. In quadrimaculatus the lower cheek stripe is usually dusky, 

 at least posteriorly, and reaches backward behind the plane of 

 the ear ; the post-auricular patches are larger than in senex, and 

 are pure white instead of bluish gray ; the eye stripe is usually 

 blackish both behind and in front of the eye ; the outer pair of 

 dorsal stripes are almost as white as in speciosus, though not so 

 broad. 



The geographic range of E. quadrimaculatus is a narrow belt 

 along the lower part of the west slope of the Sierra Nevada from 

 the Yosemite National Park northward to Quincy, in Plumas 

 County. In its relations to other forms, it lies below the range 

 of senex and seems to replace merriami on the lower slopes north 

 of the Yosemite. 



7. DESCRIPTIONS OF NEW SPECIES AND SUBSPECIES. 

 Eutamias townsendi ochrogenys subsp. nov. Redwood Chipmunk. 



Type from Mendocino, California, No. 67182, J 1 ad., U. S. Nat. Mus., 

 Biological Survey Coll. Collected July 17, 1894, by J. E. McLellan. 

 Original No. 1015. (In change of pelage : anterior half of body in fresh 

 post-breeding coat.) 



General characters. Size large; general coloration dark and rich ; post- 

 auricular spots and ear stripe bluish gray, large and conspicuous ; side of 

 face ockraceous in oil pelages ; color of sides extending far down on under- 

 parts except in post-breeding pelage when the under parts are strongly 

 washed with salmon-ochraceous ; ant-orbital part of middle dark facial stripe 

 obsolete. Resembles merriami in corresponding pelages, but differs in 

 uniformly darker coloration, more conspicuous ear stripes and post- 

 auricular spots, presence of ochraceous suffusion on underparts and sides 

 of face, and absence of ant-orbital part of middle dark face stripe. Differs 

 from townsendi in all pelages by color of underparts, which is always 

 white in townsendi, and by different colors of upper parts. 



Color. Winter pelage (in spring and earl y summer, before replaced by 

 post-breeding pelage) : upper parts rich olive, finely grizzled with gray 

 and golden, and becoming dull fulvous on sides ; dorsal dark stripes 

 black, more or less obscured by fulvous- tipped hairs; inner pair of light 

 stripes only faintly paler than general ground color of upper parts ; outer 

 pair of light stripes grayish ; post-auricular spot and posterior ear stripe 

 bluish gray and sharply defined ; rest of ear dusky or blackish ; becoming 

 more and more fulvous as summer advances ; sides of face, including 

 stripes, suffused with ochraceous, increasing in intensity and area as the 

 season advances; fore and hind feet olive gray slightly tinged with pale 

 fulvous, the fulvous increasing in summer; tail above blackish with 

 hoary tips; below rich chestnut with broad submarginal black band. 



