1925] St over: A Synopsis of the Amphibia of California 249 
Rana hoylii hoylii. In California this subspecies inhabits the foothill 
districts of the State south to Bodfish, Kern County (Camp, 19175, 
p. 118). In the Coast Ranges it has been found commonly south to 
central Monterey County (Storer, 1923, p. 8) and may range to Santa 
Barbara (Cope, 1889, p. 434, specimen no. 8679). Easterly in the 
Coast Ranges it comes close to the margin of the Sacramento-San 
Joaquin Valley as in Putah Canon, 4 miles west of Winters, Yolo 
County (Storer, MS), near Vacaville, Solano County, near Mount 
Diablo, Contra Costa County, Corral Hollow, San Joaquin County, 
and in the foothills 22 miles southwest of Los Banos, Merced County 
(Camp, loc. cit.). In the northern Sacramento Valley it has been 
found in Mill Creek near Tehama, Tehama County (Camp, loc. cit.). 
Along the western flank of the Sierra Nevada it occurs in the foothill 
streams up to the margin of the Transition Zone, as at Fyffe, Eldorado 
County (3600 feet), Sweetwater Creek, Mariposa County (3800 feet), 
and Hume, Fresno County (5300 feet) (Mus. Vert. Zool.). Its 
southernmost station of record is Kern River near Bodfish ■ (Camp, 
loc. cit.). This form reaches through Kern Gap, as at Fay Creek 
(4100 feet), 6 miles north of Weldon, Kern County, and has been 
found on the east slope of the Sierra Nevada at Mono Lake (Camp, 
loc. cit.). Frogs of the hoylii group have been recorded from the 
vicinity of Lake Tahoe (Boulenger, 1920, pp. 469-471), but as that 
author 'lumps’ the three subspecies of this group the subspecific 
identity remains to be determined. 
Boylm occurs in the Transition Zone of the Coast Ranges from 
Mendocino County south at least to Santa Clara County (“Palo Alto” 
[Boulenger, loc. cit.]), and is very common in many of the creeks in 
that zone north of San Francisco Bay. In the Sierra Nevada it is 
restricted to the Upper Sonoran Zone, reaching but a short distance 
into the Transition, as at Fyffe and Hume. It has not been recorded 
at good mid-Transition Zone localities there. On the other hand, it is 
not now known to occur out in the Lower Sonoran Zone of the San 
Joaquin Valley. There seems to be a hiatus in the range of the 
species hoylii in the mountains at the southern end of the San Joaquin 
Valley; at least the intensive collecting which has been carried on in 
the vicinity of old Fort Tejon has failed to reveal the presence of any 
stream frogs between Bodfish, Kern County, where R. h. hoylii occurs, 
and Little Rock Creek, on the northern slope of the San Gabriel Moun- 
tains, Los Angeles County, where the southern subspecies, muscosa, is 
found. 
