352 PROCEEDINGS OF THE ACADEMY OF [1898. 



DESCRIPTIONS OF THREE NEW RODENTS FROM THE OLYMPIC 

 MOUNTAINS, WASHINGTON. 



BY C HART MERRIAM. 



Owing to an unavoidable delay in the publication of my report 

 on the Olympic Mountains, it seems desirable that the following new 

 species of mammals should be recorded as early as practicable. 



Arctomys olympus sp. now 



Type. — From Timberline at head of Soled uc River, Olympic 

 Mountains, Washington. No. 90,518, S ad. U. S. Nat. Mus. Bio- 

 logical Survey Coll. Collected August 27, 1897, by C. Hart Mer- 

 riam and Vernon Bailey. Original No. 6,210. 



Characters- — Size and general characters as in A. caligatus, from 

 which it differs markedly in color, the feet being brown instead of 

 black, and upper parts in summer pelage uniform dull ochraceous 

 yellow, without the hoary shoulders and fore back, dark posterior 

 back, or the blackish top of head of that species. 



Color. — Entire upper parts except ears and nose, dull buffy or 

 ochraceous yellowish, becoming brown on underparts ; ears and feet 

 brown ; chin and nose white, with a dark bar across face between 

 nose and eyes. This face bar is probably absent in full summer 

 pelage, and indicates the beginning of the fall change to blackish 

 pelage. 



Measurements. — Type specimen, $ ad., measured in flesh : Total 

 length, 750 mm. ; tail vertebra?, 210 mm. ; hind foot, 110 mm. 



Eutamias caurinus sp. nov. 



Type. — From Timberline near head of Soleduc River, Olympic 

 Mountains, Washington. No. 90,636, $ ad. U. S. Nat. Mus. Bio- 

 logical Survey Coll. Collected August 27, 1897, by C Hart Mer- 

 riam. Original No. 6,211. 



Characters. — (Type specimen in post breeding pelage — molt not 

 completed posteriorly). Similar to E- amcenus, but hind feet longer; 

 underside of tail with black border broader, and median chestnut- 

 fulvous band darkened by mixture of black hairs ; post-auricular 

 patches obsolete ; face stripes duller ; back of neck not grayish or 

 hoary, but grizzled with fulvous, like shoulders ; middle pair of 



