1910] Dicon.—California Gray Fox. 305 
Cotor.—The chief color differences between the new form and 
californicus is that in the former the rufous at the base of ears, 
down sides of neck, on belly, and on ventral surfaces of feet is 
more intense and extensive than in californicus. The hairs be- 
tween the pads of the feet and on the dorsal surface of the feet 
are likewise darker than in californicus. In the many specimens 
of the latter examined the black stripe down the fore leg is the 
exception; in sequovensis it is the rule. A summer topotype of 
townsendi has the rufous tints paler than summer specimens of 
sequoiensis from the Santa Cruz Mountains. Some of the shades 
of the type of sequoiensis could not be exactly matched in Ridg- 
way’s Nomenclature of Colors, 1885, which is as closely as prac- 
ticable the basis used in the following color description. 
Posterior base of ears, dark cinnamon rufous; anterior margin 
of tip of ear, orange buff; sides of neck, cinnamon rufous; lower 
part of neck crossed by a broad band of the same shade; a black 
stripe is present on the front of the fore lee; ventral surface of 
feet dark cinnamon rufous; dorsal surface of feet infused with 
a strong salmon tint; white on chin and belly much’ restricted 
by encroachment of cinnamon rufous; ventral surface of tail, 
orange buff. 
Remarks.—Urocyon c. californicus Mearns (Proc. U. S. Nat. 
Mus., XX, 1897, p. 459) was deseribed from the San Jacinto 
Mountains in southern California; we find an average increase 
in the intensity and extent of the fulvous areas in animals oe- 
eurrine northward from there along the coast. There is also 
a gradual increase in size which reaches its climax in Urocyon 
c. townsend: Merriam (N. Am. Fauna, no. 16, 1899, p. 103), 
from Baird, Shasta County. But the latter, beimg an inland 
form, is paler than the animal of the redwood belt, which is of 
intermediate size. The tendency of the color of birds and ani- 
mals to be intensified in this faunal area is well known. The 
facts that the most deeply colored gray foxes are from the coast 
belt north of San Francisco Bay, and that the new form there- 
fore seems to be there differentiated in extremest degree, find 
many parallels in other genera of vertebrate animals; for in- 
stance, Hutamias, Peromyscus, Chamaea, Penthestes, and Thryo- 
Manes. 
