1 68 Bulletin American Museum of Natural History. [Vol. XIX, 



very slightly varied with fulvous gray; apical external half of ears 

 black, basal half and inner surface pale orange; posterior third of 

 dorsal surface rufous varied with fulvous gray, much lighter than the 

 anterior half of the body, and with a pale orange disk in front of the 

 base of the tail, divided by a median band of the color of the back; 

 ventral surface from chin to lower part of breast white, with the under- 

 fur blackish or slaty gray; rest of ventral surface rufous, lighter pos- 

 teriorly, with the underfur along the median line dusky, showing 

 strongly at the surface on the middle of the belly; tail dark rufous 

 orange, the long hairs tipped with black, so that the sides of the tail 

 when seen from above are strongly fringed with black; end of the tail 

 broadly tipped with pure white; fore and hind limbs deep rufous, with 

 the front surface of the fore feet black to the carpal joint, and of the 

 hind feet black nearly to the tarsal joint, the black area narrowing 

 proximally on the latter from the middle of the foot ; base of the toes 

 deep orange rufous ; soles of both fore and hind feet brownish gray 

 with a slight rufous tinge. 



For external measurements see below, and for cranial measurements 

 see page 170. 



Vulpes anadyrensis is so strikingly different in coloration 

 and size and in its heavy dentition from Vulpes vulpes of 

 western Europe and England that no further comparison is 

 necessary. In size and general external features, and in its 

 heavy dentition, it bears a striking resemblance to some of the 

 brighter colored phases of the Red Fox group of Alaska, but 

 it is very much more deeply colored, being orange rufous 

 above instead of fulvous or golden fulvous, with the nose, 

 feet, and other lighter parts proportionately deeper colored. 



The skull is less massive and narrower interorbitally, but 

 the dentition is quite as heavy as in the largest Alaskan skulls. 



This species is represented by 9 skins with skulls, taken in 

 the vicinity of Marcova by Axelrod and Buxton, and by 17 

 hunters' skins purchased by Mr. Bogoras of the natives at 

 Indian Point. Five of the Marcova specimens measured in 

 the flesh as follows : 



18239^ $ , Dec. 10. Total length, 1120; tail vertebrae, 425; hind foot, 166. 



18240, ?, I0 65; " 374; " " 168. 



18244, $ , Apr. 7. " 1078; " 430; " " 157. 



18241, 9, Feb. . " 1005; " 362; " " 170. 



18245, S.Apr. 24. " " 1030; " " 410; " " 165. 

 1 Type. 



