1911] Bryant: Horned Lizards of California and Nevada 19 
also one to secure them from across the line in Oregon, where 
it was stated they had been seen. Several people living at 
Sisson, a town on the southwestern base of the mountain, stated 
that they had never seen a horned lizard in that locality. No 
distinetly California specimens being at hand, the discussion 
of this species has necessarily been abbreviated. 
The type locality of Phrynosoma blainvillei was originally 
“California’’ without specification of locality. Since 
given as 
the division of the species into P. blainvillei and P. frontale by 
Dr. Van Denburgh (1903), the distribution of P. blainvillei 
should be restricted to southern California. An examination 
of a large number of specimens of these two species showed an 
intergradation of the diagnostic characters used by Van Den- 
burgh. This fact, as well as others, indicate that these lizards 
belong to races rather than species. Cope (1898) has already 
suggested this. The two have therefore been reduced to sub- 
specific rank and are referred to as Phrynosoma blainvillei blain- 
viller and Phrynosoma blainvillei frontale. A discussion of the 
intergradation and the reasons for the reduction can be found 
on page 3). 
Blainville’s horned lizard, Phrynosoma blainvillei blainvillei, 
is the common horned lizard of southern California, being 
found on the coastal slope from Los Angeles County southward 
to the Mexican line. Specimens from San Diego County are 
considered most typical. An intergradation with Phrynosoma 
blainville: frontale takes place in northern Los Angeles County 
(see page 35). 
The California horned lizard, P. blainvillei frentale, is found 
principally in the San Joaquin basin, although there are many 
records of its occurrence in the counties along the coast from 
San Mateo County southward. The most northern record is 
from Colfax, Placer County, and the most southern of indi- 
viduals showing distinctly P. b..frontale characteristics, from: 
Matilija, Ventura County. The type specimen in the collection 
of the Leland Stanford Junior University is from Bear Valley. 
San Benito County, California. 
The three remaining species are limited to desert regions. 
P. platyrhinos, the desert horned lizard, occurs abundantly in 
