170 Merrlam — Fonr ISfeu- Arctic Foxes. 



Vulj)es lagopus ungava nob. Type locality Uiigava, Labra- 

 dor. 



V\(l2ye8 haUensis (Merriam). Type locality Hall Island, Ber- 

 ing Sea. Occurs on St. Matthew Island also. 



Vul J) e s pribiJ of ens is noh. Type locality St. George Island, 

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



Vtilpes beringensis nob. Typelocality 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. Mcllheuny. Original No. 831. 



Characters. — Similar to lacjo'pua 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 hallends 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 Hatter and the postorbilal processes are heavier and more deeply 

 e.xcavated posterioi-ly. 



Cranial measurements. — Slivill of type specimen 9 ^^•'- basal length 

 117; zygomatic breadth 09; palatal length 00; 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 — '6\va\\m- io inn uit us h\xi sliglitly larger; rostrum slightly 

 longer; frontal shield less fiat, 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, iingara 

 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 fiattened; 

 nasal broader: crown (W fourlh lov,or jJi'fMnolav larger and longer: base of 



I 



1 



