170 Merriam Four New Arctic Foxes. 



Vulpes lagopus ungava nob. Type locality Ungava, Labra 

 dor. 



Vulpes hallensis (Merriam). Type locality Hall Island, Ber 

 ing Sea. Occurs on St. Matthew Island also. 



Vulpes pribilofensis nob. Type locality St. George Island, 

 Pribilof Islands, Bering Sea. Occurs on St. Paul Island, also. 



Vulpes beringensis nob. Type locality Bering Island, Bering 

 Sea. 



Vulpes lagopus innuitus subsp. nov. 



Type from Point Barrow (Karogar River), Arctic Alaska. No. 107,020, 

 9 ad., U. S. National Museum, Biological Survey Collection. June 27, 

 1898. E. A. Mcllhenny. Original No. 831. 



Characters. Similar to lagopus in size and general characters, but 

 braincase broader and more pyriform, and tapering much more abruptly 

 behind broadest part; nasals much broader. Contrasted with pribilofen 

 sis it is so much smaller and shorter as not to require close comparison. 

 Contrasted with hallensis it maybe distinguished by the following char 

 acters: nasals broader; median frontal sulcus deeper; rostral constriction 

 less pronounced; lower premolars larger (most noticeable in third and 

 fourth) ; first upper molar larger. Contrasted with ungava the frontal 

 shield is flatter and the postorbital processes are heavier and more deeply 

 excavated posteriorly. 



Cranial measurements. Skull of type specimen 9 a d.: basal length 

 117; zygomatic breadth 09; palatal length 60; postpalatal length 50; 

 breadth of rostrum at second premolar 23.5; upper carnassial (on cin- 

 gulum) 12.5; first upper molar (tranverse diameter from notch on outer 

 side) 10. 



Vulpes lagopus ungava subsp. nov. 



Type from Fort Chimo, Ungava, Labrador. No, 23,195, [ $ ad.] U. 

 S. National Museum. Collected by L. M. Turner. Original No. 2,302. 



Characters Similar to innuitus but slightly larger; rostrum slightly 

 longer; frontal shield less flat, swollen anteriorly on each side of median 

 sulcus; postorbital processes more pointed, less massive, and less deeply 

 excavated posteriorly; under jaw much broader vertically and deeply 

 bellied under sectorial. 



Compared with Vulpes lagopus from Lapland and Sweden, ungava 

 differs as follows: postorbital processes more decurved and pointed and 

 less excavated posteriorly; braincase broader and more pyriform (broadly 

 inflated on plane of posterior edge of posterior root of zygoma, behind 

 which it tapers much more abruptly); frontal shield less flattened; 

 nasal broader; crown of fourth lower premolar larger and longer: base of 



