VULPES. 383 



Measurements. Skull: basal length, 117; zygomatic width, 69; 

 palatal length, 56; rostrum width at second premolar, 23.5; length 

 of upper camassial, 12.5 ; transverse diameter in outer side, 10. 



Vulpes lagopiis ungava Merriam. 



Vulpes lagopus ungava Merr., Proc. Biol. Soc. Wash., xv, 1902, 

 p. 170. 

 Ungava Arctic Fox. 



Type locality. Fort Chimo, Ungava, Labrador. 



Geogr. Distr. Labrador. 



Genl. Char. Similar to V. I. innuitus, hut slightly larger; "ros- 

 trum longer; frontal shield less fiat; postorbital processes more 

 pointed and less deeply excavated posteriorly; under jaw broader 

 vertically and deeply bellied under sectorial." 



Color. Like "V. /. innuitus and V. lagopus." 



Measurements. Skull: basal length, 118; zygomatic breadth, 70; 

 palatal length, 63 ; post palatal length, 55 ; width of rostrum at second 

 premolar, 2 6 ; length of upper camassial, 12.5; length of upper molar, 9.5. 



945. Vulpes pribilofensis Merriam. 



Vulpes pribilofensis Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 171. 

 Pribilof Island Arctic Fox. 



Type locality. St. George Island, Pribilof Islands, Bering Sea. 



Geogr. Distr. St. George and St. Paul Islands, Pribilof Island, 

 Bering Sea. 



Getil. Char. Size large. Skull elongate; frontals narrow; post- 

 orbital processes slightly developed ; braincase long and flat ; sagittal 

 crest well developed; teeth as in V. /. innuitus. 



Measurements. Skull: basal length, 127 ; zygomatic breadth, 72 ; 

 palatal length, 66; postpalatal length, 6t ; width of rostrum at second 

 premolar, 25; length of upper camassial, 12.5; transverse diameter 

 of first upper molar, 9.5. 



946. Vulpes beringensis Merriam. 



Vulpes beringensis Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 171. 

 Bering Island Arctic Fox. 



Type locality. Bering Island, Bering Sea. 



G.enl. Char. Size large. Rostrum broad, massive; frontals high 

 anteriorly and swollen on each side of median sulcus ; premolars large 

 and swollen. 



Color. Not given. 



Measurements. Skull: basal length, 123 ; zygomatic breadth, 71 ; 

 palatal length, 66 ; postpalatal length, 56 ; width of rostrum at second 

 premolar, 27. 



