1925] 
Storer: A Synopsis of the Amphibia of California 
263 
Range. — This form inhabits stream canons in southern California, 
south of Tehachapi Pass. Localities of record extend from Pacoima 
Canon near San Fernando eastward and southward along the southern 
and western slopes of the San Gabriel, San Bernardino and San 
Jacinto ranges as far as Keen’s Camp, in the latter range. It has 
been found also at Little Rock Creek on the north slope of the San 
Gabriel Mountains. The range in altitude is from 1200 feet near 
Sierra Madre to 6500 feet on Fish Creek in the San Bernardino range 
(Camp, 19175, p. 119; Mus. Yert. Zool.). 
Life-history. — In most respects the habits of this species are like 
those of Rana boylii boylii. A mated pair seen in Santa Anita Canon, 
near Monrovia, April 11, 1910 (Camp, MS) suggests breeding at about 
the same time as with the northern subspecies. 
Rana boylii sierrae Camp. Sierra Nevada Yellow-legged Frog 
(Pl. 17, fig. 51) 
Eana pretiosa, Stejneger (1893, p. 226), part. Locality records in southern 
Sierra Nevada. 
Eana boylii sierrae Camp (1917b, pp. 120-123, fig. 2). Original description, 
type from Matlack Lake, altitude 10,500 feet, 2 miles south of Kearsargc 
Pass, Inyo County, California. 
Eana boylii sierrae, Grinnell and Camp (1917, p. 146, fig. 5). Range. 
Eana boylii sierrae, Stejneger and Barbour (1917, p. 36; 1923, p. 34). 
General range. 
Eana boylii, Boulenger (1920, pp. 469-471), part. Critical; range. 
Eana boylii sierrae, Grinnell and Storer (1924, pp. 663-665, pl. 60b). Gen- 
eral account; habits. 
Diagnosis. — As for Rana boylii boylii (which see), but hind leg 
relatively shorter (posterior side of flexed tarsus reaching anterior 
border of orbit), toes more pointed, head relatively narrower, tym- 
panic membrane smoother and light patch lacking on eyelid; dorso- 
lateral folds indicated. 
Comparisons. — See Rana boylii boylii. 
Coloration. — Camp (19175, pp. 121-122) says: 
Three specimens from the southern Sierra Nevada and two from Young Lake, 
Tuolumne County, show faint traces of a lighter patch across the anterior part 
of the head, as in E. b. boylii. Nearly all the frogs from Whitney Meadows have 
the dorso-lateral folds unusually well developed. The dorsal color pattern varies 
widely. Occasionally the back is uniformly reddish-, brownish-, or blackish -yellow; 
more rarely it is evenly marbled with dark brourn upon a dark yellow background 
with or without indefinite lighter spots; more frequently the darker markings 
remain as indefinite patches or as distinct black spots, thus approaching the 
pattern of E. pretiosa. The outline of the head viewed from above is either 
rounded as in the type or pointed as in boylii ; in some specimens it is as wide as in 
the narrowest boylii. 
