1911] Bryant: Horned Lizards of California and Nevada 29 
Phrynosoma blainvillei blainvillei (Gray) Bryant 
Blainville’s Horned Lizard 
Agama coronatum Blainville (1835), p. 284, pl. 25, fig. 1. 
Phrynosoma coronata, Dumeril and Bibron (1837), p. 318. 
Batrachosoma coronatum Girard (1858), pp. 400-402, pl. 20, figs. 10— 
Se 
Phrynosoma Blainvilli Gray (1839), p. 96, pl. 29, fig. 1. 
interocc. h. 
‘ 
1 
1 
1 
‘ 
i 
1 
H 
' 
t 
‘ 
--{--occ. h, 
supraoce. SAU) bli 
[ose N 
pee ree X supratemp. 
Fig. D. Skull of Phrynosoma blainvillet blainvillei (Univ. Calif. Mus. 
Vert. Zool., no. 272). dent., dentary; fron., frontal; jug., jugal; imteroce. 
h., interoceipital horn; maz., maxillary; nas., nasal; nas. op., nasal opening; 
occ. h., occipital horn; orb., orbit; par., parietal; pin. for., pineal foramen; 
prefron., prefrontal; premaz., premaxillary; postorb., postorbital; supraocc., 
supraoccipital; supratemp., supratemporal; supratemp. op., supratemporal 
opening; temp. h., temporal horn. X 2. 
EXTERNAL CHARACTERISTICS 
Diagnostic Characters: Head short and thick; snout not sep- 
arated from frontal region by a prominent angle; nostrils on the 
line joining the superciliary ridges with the end of the snout; 
occipital horns large, flattened and grooved; interoceipital horn 
small (1-2 mm.), supratemporal horns three to six on each side; 
head plates convex and almost smooth; sublabials spinose, five to 
six in number and continued posteriorly with smaller plates; 
