VULPES. 385 



Measurements. Total length, 820; tail vertebrae, 300; hind foot, 



949. Vulpes mutica Merriam. 



Vulpes ntuticHs! Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 74. 

 Curtailed Fox. 



Type locality. Tracy, San Joaquin Valley, San Joaquin County, 

 California. 



Genl. Char. Similar to I', niacrotis, but larger; hind foot and tail 

 longer; chin and under lip blacker; top of head and middle of back 

 with more reddish brown showing through the grayish tips; outer 

 side of hind feet more fulvous; top of hind foot less white; pectoral 

 collar more pronounced; black tip of tail less extensive on under 

 side. Skull larger, broader, and more massive; under jaw much 

 heavier and more deeply bellied under sectorial and last premolar; 

 carnassial teeth and molars larger and much heavier; premolars 

 thicker, but not otherwise larger. 



Measurements. Total length, 950; tail vertebrae, 350; hind foot, 

 123. (Merr. 1. c.) 



950. Vulpes arsipus Elliot. 



Vulpes arsipus Elliot, PuV>. Field Columb. Mus., in, 1903, p. 256. 

 Zool. Ser. 

 Swift-footed Kit Fox. 



Type locality. Daggett, Mohave Desert. San Bernardino County, 

 California. 



Geoi^r. Distr. Southern California. Range unknown. 



Genl. Char. Similar to I', niacrotis but paler and smaller; post- 

 orbital processes longer; pterygoid fossa narrower. 



Color. Top of head mixed gray and brownish fulvous, darker 

 than the back; upper parts of body pale grizzled gray; sides paler 

 grading into buflf; outer sides of fore legs and thighs, and down out- 

 side of hind legs to the toes, pale fulvous; narrow pectoral collar 

 pale fulvous; black patch on side of nose from eye, and one on either 

 side of chin"; postocular stripe of brown; under parts, inner side of 

 thighs and front of hind legs whitish; tail above pale gray tinged 

 with buff, beneath buffy, tip brownish black; ears externally pale 

 cinnamon and narrowly edged with white. 



Measurements. Total length, 810; tail vertebrae, 310; hind foot, 

 128; ear from notch, 86. Skull: occipito-nasal length, 103; Hensel, 

 104; zvgomatic width, 61; interorl)ital constriction, 20.5; across 

 postorbital processes, 28; palatal length, 56; length of nasals, 39; 

 length of upper molar series, 44; length of mandible, 82.5; length 

 of lower molar series, anterior edge of first premolar to posterior edge 

 of last molar, 47.5. 



