1917] Camp: Notes on the Systematic Status of Toads and Frogs 117 
The two toads from Owens Valley, Inyo County, California, re- 
ferred by Stejneger (18938, pp. 220-221) to Bufo boreas nelsoni, 
appear to be halophilus. The rounded snout of these is paralleled 
in many half-grown halophilus in a series at hand from southern 
California. 
Frogs 
Examination of about 450 specimens of frogs, mostly contained 
in the Museum of Vertebrate Zoology, warrants an attempt to formu- 
late a key to the Pacific Coast species—Rana pretiosa, Rana aurora, 
and Rana boyli, and their subspecies. It has been thought necessary 
to redefine Rana boyli and to describe two new races of this species, 
one from the high Sierra Nevada and the other from the mountains of 
southern California. 
Rana boylii boylii Baird 
California Yellow-legged Frog 
Type locality—California (Baird, 1856, p. 62) ; subsequently in- 
dicated as El Dorado, California (Cope, 1889, p. 447). 
Synonyms—Rana pachyderma Cope (1884, pp. 25-27), (types 
from MeCloud River |= Baird, Shasta County], California, and Ash- 
land, Oregon) ; Rana pretiosa (Yarrow and Henshaw, 1878, p. 1632), 
part |Kern River]; [?] Rana temporaria pretiosa (Cope, 1889, p. 434), 
part [Santa Barbara]. 
Description.—V omerine teeth rudimentary, on two oblique ridges 
nearly meeting between and behind the nares (see fig. 3) ; tympanic 
region not darker than rest of head; upper labial ridge mottled or 
colored like rest of body and not distinctly lighter than rest of head; 
red never present in coloration (except in diseased individuals). The 
above characters are diagnostic of all three subspecies of boylii. Those 
characters which pertain to this subspecies alone are: hind leg long, 
inside angle of bent tarsus reaching at least to nares and usually beyond 
when leg is advanced along body; tibia elongate, reaching usually be- 
yond anus when flexed and held at right angles to axis of body ; fourth 
toe on reflexed hind foot never reaching beyond end of knee and often 
not quite to fold of skin below knee; head broad and pointed when 
viewed from above, its width two and one-third to two and two-thirds 
times in body-length; skin on back, legs and tympanum, thick and 
rough with minute brownish spines; color dorsally varying from nearly 
