THE HARRIMAN ALASKA EXPEDITION 



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gray of neck and shoulders clearer and pushing forward on sides of 

 face nearly to eye; dorsal veriniculations less broken into spots; thighs 

 and flanks intense ferruginous : deep rusty of underparts interrupted 

 by areas of grizzled grayish and fulvous. 



Cranial characters. — Skull large and heavy like that of barrowen- 

 si's, from which it differs in the greater length of premaxillse : in dar- 

 roxvoisis the premaxillai fall short of the nasals; in osgoodi they 

 surpass the nasals. 



Remarks. — ^S. osgoodi differs from all its relatives in the large 

 size of the red nose patch, which covers the whole top of the head, 

 the presence (normally) of a fulvous dorsal area, the intensity of 

 the red on the belly (rusty-red instead of fulvous), and the great 

 length of the tail. The thighs are usually as I'ed ^ as in colunibiatius 

 and erythrogluteus., thus differing markedly from all other known 

 Alaska forms. I have named this striking and handsome species in 

 honor of my assistant, Wilfred H. Osgood, who, during his recent 

 trip down the Yukon, recognized it as new and obtained a fine series, 

 which series, unhappily, was afterwards lost as a sequel to the cap- 

 sizing of his boat in the great river. 



SPERJVIOPHILUS BARROWENSIS sp. nov. 

 Point Barrow Spermophile. 



Type from Point Barrow, Alaska. No. iflf^ $ ad. U. S. National 

 Museum. 



Characters. — Size largest of the known forms (hind foot 62 mm.) ; 

 coloration (in May, left-over winter pelage) pale; prevailing tints 

 buffy ; back indistinctly spotted ; skull large and massive. 



Color. — Nose patch rather pale fulvous (not chestnut or ferruginous) , 

 fading on top and back of head to buffy fulvous ; neck and sides buffy, 

 grizzled with black hairs; back buffy fulvous irregularly speckled 

 with whitish (the spotting partly due to wear) ; underparts, including 

 legs and feet, buffy, palest on throat and around mouth, deepest on 

 pectoral region, belly, and upper sides of hind foot; eyelids whitish ; 

 tail above, buffy, grizzled with black ; below buffy fulvous, bordered 

 with black and edged with buffy. 



Cranial characters. — Skull largest of the group, though only 

 slightly larger than that of 5". osgoodi from Fort Yukon ; rostrum 

 broad ; frontal shield broad, its orbital margin strongly thickened and 

 elevated, but not noticeably notched by supraorbital foramen ; zyg- 



1 An October specimen has the red thighs partly overlaid and concealed by a 

 superficial grizzling of buffy gray and black. 



