THE HARRIMAN ALASKA EXPEDITION 1 5 



fourth and tapering thence to tip; color tawny yellow; fur of 

 posterior half of back grizzled and much coarser than that on rest of 

 body; black of fore and hind feet greatly reduced. 



Color. — Nose to between eyes pale dull fulvous, grizzled with 

 whitish ; top of head from between eyes to nape buffy whitish, grizzled 

 with yellowish fulvous ; anterior half of back bright yellowish fulvous, 

 the color extending down over sides and belly nearly to median line ; 

 posterior half of back coarsely grizzled buffy whitish and dull fulvous, 

 reddest along median line; underparts yellowish fulvous except chin, 

 throat, inguinal region, and a narrow strip on belly, which parts are 

 grayish buffy; ears black; fore and hind legs and feet dull pale ful- 

 vous with an irregular black patch on dorsal surface of forefoot, and 

 a much smaller one on hind foot; tail' grizzled grayish and yellowish 

 fulvous, the fulvous most marked on median line of upper surface, 

 the black tipped hairs less abundant than in related species but suffi- 

 ciently plentiful on basal fourth of dorsal surface to form an indistinct 

 black patch or spot; tip inconspicuously white or buffy white. 



Cranial characters. — Skull large and massive ; postorbital proc- 

 esses only slightly developed (much less prominent than in any other 

 known species) ; frontal sulcus very deep and reaching forward over 

 posterior third or half of nasals; palate and maxillaries broad; bullce 

 large. Dentition heavy ; premolars more robust than in related species. 



Measiiremejits. — Type specimen [a dry skin] : total length 1260; 

 tail vertebras [approximate] 450; tail to end of hairs 550; greatest 

 diameter of tail, hairs laid naturally 160; greatest diameter of tail, 

 hairs spread, 250. 



Cranial jneasurements. — Skull no. 98144 from Uyak Bay, Kadiak 

 Island: basal length 140; zygomatic breadth 77 ; palatal length 74.5 ; 

 postpalatal length 65 ; breadth across postorbital processes 33 ; inter- 

 orbital breadth 27.5; postorbital constriction 22.5; greatest breadth 

 of rostrum over roots of canines 26.3 ; lateral series of teeth (from 

 front of canine to back of last molar) (i6. 



VULPES HALLENSIS sp. nov. Hall Island Arctic Fox. 



Type from Hall Island, Bering Sea. No. 98067 9 old, U. S. Na- 

 tional Museum, Biological Survey Collection. July 14, 1899. C. 

 Hart Merriam. Orig. no. 2177. (Shot by W. B. Devereux.) 

 Characters. — Externally similar in general to V. lagopus. Skull 

 shorter and broader. 



Color. — Head sooty, grizzled between eyes and on sides of face 

 with whitish hairs; back (rather narrowly), shoulders, and upper sur- 

 faces of legs sooty brown; sides and underparts buffy; chin and an- 

 terior part of throat dusky grayish ; ears dusky, edged with buffy 



