1911] Bryant: Horned Lizards of California and Nevada 49 
as in that species, the difference chiefly appearing in the squa- 
mation and the horns. The seales of the head are more sub- 
divided, and the presence of accessory horns is unique in the 
genus. The simplicity of the lateral fringe is also character- 
istic, as is also the rudimental character of the rosette on the 
neck (Cope, 1898).’’ Ditmars (1907) describes this species as 
Phrynosoma calidiarum, and says that he has received a speci- 
men from the Gila Desert of Arizona. He ealls attention to the 
erect position of the occipital horns. The photograph which 
accompanies the description, however, appears to be a_ platy- 
rhinos. Van Denburgh (1897) does not describe this species, but 
marks it ‘‘uncertain.’’ 
The type specimen in the U. 8S. National Museum is the only 
known example of the species except for the one mentioned by 
Mr. Ditmars. No material, therefore, is at hand for examination. 
A study of the figures given by Cope (1898) and his descriptions 
of the species has convinced me that this is a doubtful form. 
Dr. Leonard Stejneger, to whom the matter was referred, regards 
Phrynosoma calidiarum as a synonym of Phrynosoma platy- 
rhinos. 
Specimens of Phrynosoma platyrhinos have been recorded 
from the following localities in California: Coyote Wells, in 
Imperial County; Mecca, and Palm Springs, in Riverside 
County; Needles, and Coyote Holes, twenty miles northeast of 
Daggett, in San Bernardino County; Antelope Valley, in Los 
Angeles County; Coso Valley, Coso, Ash Creek, ten miles north 
of Bishop, Independence, head of Borax Flat, and Wild Rose 
Spring, in Inyo County; and south fork of Kern River near 
Chimney Creek, Walker Pass, and head of Kelso Valley, in Kern 
County. In Nevada, specimens have been taken at Vegas Valley, 
and Indian Spring, in Clark County; Pahrump Valley, Pahra- 
nagat Valley, and Panacea, in Lincoln County; Grapevine Moun- 
tains, in Esmeralda County; Virgimia City, in Storey County ; 
Pyramid Lake, in Washoe County; and head of Humboldt River, 
Amos, Quinn River Crossing, Pine Forest Mountains, Thousand 
Creek Ranch, and Leonard Creek, Alder Creek, and Big Creek 
Ranch, in the Pine Forest Mountains, in Humboldt County. 
