MAMMALS 269 



V. deletrix Bangs. Size slightly smaller than V.fulva; hind feet and 

 claws very large; color very pale, being light straw: Newfoundland. 



V. regalis Merriam. Size much larger than V. fulva, the length 

 being 1,117 mm.; ears very broad and large; tail very long but thin; 

 color golden yellow; legs abruptly reddish; feet black: northern plains 

 from Minnesota to Montana and Alberta. 



V. macroura Baird. Size and color of V.fulva, but tail much longer 

 and hind feet larger: Nebraska to Oklahoma; mountains of Colorado, 

 Utah and Wyoming. 



V. necator Merr. Size and color of V.fulva: high Sierras, California. 



V. cascadensis Merr. Color similar to V. fulva; black-cross color 

 phase common; length 1,070 mm.; tail 412 mm.; hind foot 178 mm.: 

 northern Sierras, Cascades and northward. 



V. velox (Say). Swift fox; kit fox. Size small; length 645 mm.; 

 tail 226 mm.; hind foot 95 mm.; color yellowish gray above and white 

 underneath; tip of tail black: northern Texas through Nebraska and 

 eastern Colorado into Alberta; not common. 



V. niutica Merr. Similar to V. macrotis; top of head and middle of 

 back reddish brown; outside of hind foot fulvous; tip of tail black; 

 length 950 mm.; tail 350 mm.; hind foot 122 mm.: San Joaquin Valley, 

 California. 



V. macrotis Merr. Long eared fox; desert fox. Length 850 mm.; 

 tail 290 mm.; hind foot no mm.; color grizzled gray above; sides ful- 

 vous; under parts white, mixed with buff; terminal quarter of tail black; 

 ears well haired, very long and broad; tail long and slender: Mexican 

 border from Texas to California. 



3. Urocyon Baird. Gray foxes. Upper incisors not lobed; tail 

 with concealed stiff hairs and no soft under-fur: 7 species, 5 in the 

 United States and 2 in Central America, being most numerous in the 

 semiarid regions of the southwest; they do not dig a den, as do the red 

 foxes, but live in hollow logs or in cavities in the rocks; the young num- 

 ber from 3 to 9. Gray foxes often climb low trees. 



Key to the Species of Urocyon 



ai In the eastern and central States V. cinereoargenteus. 



ao On the Pacific slope. 



bi On the main land U . calif ornicus. 



hi On the islands off the coast U. dementce. 



U. catalina. 

 U. littoralis. 



U. cinereoargenteus (Schreber). Gray fox. Color gray, darker on 

 the back; sides of neck, collar and a band along belly tawny; feet and 



