1913] Grinnell-Swarth: Birds and Mammals of San Jacinto 373 



not now to be found) ; Thomas Mountain, 6800 feet, August 18- 

 20. four : nos. 2324 male, 2325 female, 2326 female, 2327 female 

 immature; Kenworthy, 4500 feet, May 24, female, no. 2330; 

 Santa Rosa Peak, 7500 feet, June 30, female, no. 2331; Carrizo 

 Creek, in vicinity of Black Hill, 3000 feet, three : male. no. 

 2332, May 26, female, no. 2318. June 22 (skull now missing), 

 male, no. 232!), August 24; Palm Canon. 800 feet, June 16, 

 female, no. 2316; Palm Springs, 450 feet, December 23, 1903, 

 female, no. 7094; Snow Creek, 1500 feet. June 2 (skull only, 

 not sesed) no. 7795; Cabezon. 1700 feet. May 8, male. no. 2304. 



Two well-marked subspecies of the gray fox inhabit southern 

 California, one occupying the San Diegan district ( V. c. calif <n- ul- 

 cus), the other the Colorado desert I /'. c. scotti). Of the latter 

 the Museum contains a series of nine specimens; and there is also 

 an adequate series of californicus from the Pacific slope of south- 

 ern California. 



The Colorado River series (scotti) shows the following char- 

 acters as compared with californicus: Coloration paler, less 

 brightly rufous, and white endings of hairs on sides of body anil 

 tail, and on top of head, more extensive on each hair, resulting 

 in a more silvery gray general effect. The skull is relatively 

 more slender, the teeth slenderer and sharper; bullae more in- 

 flated; that is, relatively higher and steeper-sided; rostrum con- 

 spicuously narrower, possibly correlated with the weaker teeth. 



The San Jacinto series of foxes, as we have found to be the 

 case with so many other mammals, notably the white-footed wood 

 rats, presents a condition of varied intermediateness, and includes 

 also certain examples which are quite satisfactorily referable to 

 one form or the other. As is to be expected on geographical 



grounds the good scotti are from the desert side, g 1 californicus 



from the highest zones and the Pacific side. 



Unfortunately for color characters nearly all the San Jacinto 

 skins are in very worn and more or less faded summer pelage. 

 As in tlie case of the wildcats, the foxes from the arid side of 

 the range had suffered much more iu these respects than those 

 from the Transition zone and Pacific side. August examples from 

 Thomas Mountain are in good enough pelage to warrant certain 

 diagnosis as californicus. Our one winter skin, from Palm 



