17. cHatcrpEs, ‘899 
eyelid with an undivided transparent disk, Ear more or less dis- 
tinct. Nostril pierced between the rostral and a very small nasal 
in an emargination of the former shield; supranasals present ; pre- 
frontals and frontoparietals absent. Body much elongate; limbs 
short or rudimentary. 
South Europe; Africa north of the equator ; South-western .Asia, 
from Syria and Arabia to Sind. 
‘Synopsis of the Species. 
I. Snout conical. 
A. End of snout scarcely projecting beyond the mouth; ear- 
opening much larger than the nostril. 
1. Limbs pentadactyle. 
Nostril pierced just above the suture between 
the rostral and the first labial; usually, 
fifth labial entering the orbit; 28 to 38 
scales round the body sent ia ere emewee 1. ocellatus, p. 400. 
Nostril pierced in advance of the suture be- 
tween the rostral and the first labial; fifth 
labial entering the orbit; 28 or 30 scales 
round the body; hind limb as long as the 
distance between the end of the snout and 
he: fore lm bias as scw ek a sncawetals che wean eas 2. viridanus, p. 402. 
Nostril pierced in advance of the suture be- 
tween the rostral and the first labial ; usu- 
ally, fourth labial entering the orbit; 22 
to 28 scales round the body; hind limb 
shorter than the distance between the end 
of the snout and the fore limb .......... 3. bedriage, p. 402. 
2. Limbs tridactyle. 
Hind limb at least as long as the distance 
between the ear and the fore limb; second 
and third toes equal ...............45. 4, lineatus, p. 403. 
Hind limb usually shorter than the distance 
between the ear and the fore limb; second [p. 403. 
toe longer than third.............-.44- 5. tridactylus, 
3. Limbs reduced to a minute undivided [p. 404, 
TMUCMNENE yee askew ane sale ales aa ' 6. guentheri, 
B. End of snout projecting beyond the mouth; ear-opening not 
or scarcely larger than the nostril. . 
Limbs tetradactyle; 14 scales round the [p. 405. 
body es daca ae away eae /. 7. méionecton, 
Fore leno didactyle, hind limb indactyle s ; 10 [p. 405. 
scales round the body.........--:ees+-- 8. mauritanicus, 
