176 Lncertidx. 



equal to the distance between tlie anterior corner or tlie centre of the 

 eve aud the tympanum, its length of to 4h times in length to vent 

 (3i to oh times in young) ; snout obtusely pointed, as long &,s or a little 

 shorter than postocular part of head, with rather feeble or obtuse 

 cant bus and slightly concave loreal region ; a sharp keel below the eye, 

 on the freno-ocular and subocular shields. Neck as broad as or 

 broader than the head. The hind limb reaches the elbow, the axil, 

 the shoulder, or the aute-humei-al fold ; foot Ifj to If times length of 

 head ; digits feebly compressed, with smooth, more or less distinctly 

 tubercular, or feebly bicarinate* lamullaj inferiorly. Tail 2 to 

 nearly 3 times as long as head and body, often a little less than twice 

 in the very young. 



Pterygoid teeth present, in 2 or 3 series. 



Nostril betwten four shields, or bordered behind and below by a 

 narrow rim formed by the nasal ; nasals forming a short or very short 

 suture l^ehiud the rostral ; prefrontals forming a short or moderately 

 lungsuturef; frontal li to I'l times as long as broad, as long as or 

 slightly longer than its distance from the end of the snout, narrower 

 behind than in front, lateral borders slightly concave, rarely of equal 

 width througliout;J: ; parietals as long as broad or longer (up to 1^), 

 with convex outer border ; interparietal as long as broad or a little 

 longer (rarely I5 times as long as broad) ; occipital as large as the 

 interparietal or a little smaller (rarely much smaller), often a little 

 broader.§ Four supraoculars, first very small, second usually longer 

 than third, fourth small but larger than first ; four superciliaries, 

 rarely three or five, second much longer than the others, all in contact 

 with the supraoculars. Kostral entering the nostril ; a single post- 

 nasal ; anterior loreal usually shorter than second || ; four upper 

 labialsiy anterior to the subocular, which is much narrower beneath 

 than above; two or three upper temporals**; lower temporals 

 usually large, separated from the upper by very irregular small 



* 111 male from Seville, iu females from Madrid, Seville, Rahamna, Algiers, 

 Tuggurt, and (jalitone Id. 



t Separated by au azygos shield in a specimen from Barcelona 



X Male from Algarve. 



§ An additional shield between interparietal and occipital in a male from 

 Villa Franca. 



II A single loreal in male from Villa Franca, in male from Oran, and in female 

 from Algiers. 



^ 3 on both sides in female from Madrid, 1 one side in female from Am 

 Sefra ; 5 on one side in females from Seville and Algarve. 



** First rarely in contact with fourth supi-aocular: males from Cap Cerbere, 

 Fenzon, Soksawa, Blida, and Aui Draliam. 



