Vol. XI, p. 225 - July 15, 1897 



PROCEEDINGS 

 BIOLOGICAL SOCIETY OF WASHINGT '^ 



DESCRIPTION OF A NEW FLYING SQUIRREL FROM 

 FT. KLAMATH, OREGON. 



BY C. HART MERRIAM. 



Sciuropterus alpinus klamathensis subsp. nov. 



Ti/pe from Fort Klamath, Oregon (Transition zone, altitude 4200 feet). 

 No. S7.310, 9 ad. U. S. Nat. Mus., Biological Survey Coll. Collected 

 Jan. 11, 1897, by B. L. Cunningham. Original No. 355. 



General characters. — Similar to X alpinus fuliginosus Rhoads, but smaller ; 

 tail paler above and buffy below (not clouded with dusky). Differs from 

 faliginosus in having the nose and head much paler, cheeks yellowish 

 white instead of bluish gray, and audital bullas smaller. 



Color. — Upper parts dark drab brown, sometimes tinged with pale dull 

 fulvous brown ; under parts yellowish buff, the plumbeous under fur 

 showing through ; tail : upper surface like back, but somewhat darker, 

 especially toward the end ; under surface uniform deep buff; nose and 

 face pale ; cheeks pale yellowish gray ; top of head very pale grayish ful- 

 vous ; ears decidedly paler than in true alpinus or faligino.'nus. 



Cranial characters. — Contrasted with *S'. alpinus the skull is narrower 

 posteriorly, paiticularly the braincase and posterior roots of the zygomata. 

 Compared with fuliginosus the audital bullse are decidedly larger and the 

 braincase is less strongly decurved ^posteriorly. 



Miasuremeiits. — Type specimen : total length, 329; tail vertebne, 138; 

 hiii.l foot, 38. 



52-Bior,. Sue. W.\sh.. Vol. XI. 1897 



