218 University of California Publications in Zoology [Vol. 27 
History . — This hyla was originally described by Baird and Girard 
in 1852 on the basis of material collected by the U. S. Exploring 
Expedition “on Sacramento River, in Oregon and Pnget Sound.” 
Additional specimens, collected by the field naturalists of the Pacific 
Railroad Surveys, and before the wide degree of variation manifested 
by the species was known, were described by Hallowell, in 1854, as 
Hyla scapularis, Hyla nebulosa, and Hyla scapularis var. hypochon- 
driaca. Cope, in 1866, offered the name Hyla cadaverina to replace 
the name nebulosa of Hallowell, which w T as preoccupied. Cope in 
1889 in a general discussion of the species regilla mentions three 
varieties, scapularis , regilla, and laticeps, the latter a new name pro- 
posed here to designate specimens from Lower California. Cope here 
as elsewhere did not apply these varietal names with any regard to 
geography. 
Test, in 1898, after a careful study of 512 specimens of this species 
from 75 localities (Vancouver Island, B. C., to Cape San Lucas, Lower 
California, and east to Vegas Valley, Nevada) concluded that ad of 
the foregoing names and including Hyla curt a Cope (1866a) of Lower 
California should be referred to the single species regilla. 
Range. — Hyla regilla is widely distributed on the Pacific Coast, 
rivaling Triturus torosus in the extent of territory occupied and 
extending inland much farther than that species. At the north it has 
been found in British Columbia at “Chilowyuck [= Chilliwack j 
Lake” (Cope, 1889, p. 360), at Hatzic (Cope, 1893, p. 181; Fannin, 
1898, p. 58), San Juan and Sumas Prairies (Boulenger, 1882a, p. 
374), and on Vancouver Island (Boulenger, loc. cit.; Test, 1898, 
pp. 480, 491). It is common about Puget Sound (Cope, loc. cit.). 
It extends south throughout western Washington, Oregon, and Cali- 
fornia and has been found in Lower California from Ensenada south 
to San Jose del Cabo (Van Denburgh, 1895a, p. 557). Inland, at the 
north, it has been found in Washington, at Springdale, Stevens 
County (Blanchard, 1921, p. 6), and at Fort Walla Walla (Cope, 
1889, p. 361), in Idaho at Payette Lake, Boise County, and Boise, 
Ada County (Van Denburgh and Slevin, 19215, p. 41), in Oregon at 
Prineville, Crook County (Mus. Vert. Zool.), and Klamath Falls, 
Klamath County (Calif. Acad. Sci.), and in Nevada in Virgin Valley 
and Humboldt County (Mus. Vert. Zool.; Taylor, 1912, pp. 342-343), 
and in Vegas Valley (Stejneger, 1893, p. 224; Van Denburgh and 
Slevin, 1921a, p. 30). 
