Tympanum without scales 3 
Tympanum scaled 5 
Gular fold present; tail length more than twice body length; 
lateral dorsals with parallel light stripes dymondi 
No gular fold 
Hind limb reaching tympanum or eye; black V-shaped marks 
across back kumaonensis 
Hind limb reaching neck or tympanum; dark triangular marks on 
back varcoae 
One light, greenish transverse mark at mid-body, narrowest at 
vertebral area szechuanensis 
No such mark 6 
Scattered large scales on side of body grahami 
Without scattered large scales 7 
Gular fold present 8 
No gular fold 10 
Two small scales between nasal and rostral; one or 2 small 
scales between nasal and first labial; black lines radiating 
from eye flaviceps 
One scale between nasal and rostral; one small scale between 
nasal and first labial 9 
A yellowish line below eye parallel with lip splendida 
A black line from eye toward angle of jaw yunnanensis 
Tail twice body length 1 
Tail less than twice body brevipes 
Distance between orbital spines longer than third toe without 
claw swinhonis 
Distance between orbital spines less than third toe... 
mitsukurii 
Phrynocephalus 
Distance between nostrils equals distance from nostril to 
fold in front of eye viangali 
Distance between nostrils less than distance to fold _ before 
eye 2 
Distance between nostrils one half distance to fold before 
eye axillaris 
Distance between nostrils more than one half distance to fold 
before eye 3) 
Dorsal scales kceled 4 
Dorsals smooth 5 
Dorsals with strong keels and scattered small black’ spots; 
tip of tail white below przewalski 
Back with dark patches of large, upward pointing scales; tip 
of tail black below frontalis 
Hind limb reaches eye or temporal area 6 
Hind limb reaches axilla or front of shoulder 7 
Fore iimbs and dorsal surfacelof tail with dark “transverse 
bars versicolor 
No such markings; dorsal surface with dark conical scales... 
forsythii 
Tail length 1.5-1.66 times length from gular sac to vent... 
theobaldi 
Vaid shorter erythrurus 
16 
