Psammodromus. 165 



bot. Ges. Wien, xlii, 1892, p. 354; Doumergue, Erp. Oran. p. 136, 

 pi. ix, figs, 4, 5 (1901). 



Body moderately depressed. Head small, feebly depressed, convex 

 on the occiput, 1^ to If times as long as broad, its depth equal to the 

 distance between the anterior corner of the eye and the tympanum, 

 its length 4 to 4j times in length to vent; snout obtusely pointed, with 

 strong canthus and concave loreal region, ii little shorter than postocular 

 part of head ; a sharp keel below the eye, on the freno-ocular and 

 subocular shields. Neck as broad as or a little broader than the head. 

 The hind limb reaches the wrist of the adpressed fore limb in females, 

 the elbow, the axil, or the shoulder in males ; foot 1^- to Ij times 

 length of head; digits feebly compressed, with tubercular lamellae 

 inferiorly (the tubercles in two series, except distally). Tail If to 2 

 times as long as head and body. 



Pterygoid teeth absent. 



Nostril separated from the postnasal and from the first upper labial 

 by a narrow rim * ; nasals forming a short or very short suture behind 

 the rostral t ; frontonasal broader than long ; prefrontals forming an 

 extensive median suture ; frontal If to 2 times as long as broad, as 

 long as its distance from the end of the snout, narrower behind than 

 in front, lateral borders concave ; parietals as long as broad or slightly 

 longer, with convex outer border ; interparietal 1^^ to 2 times as long 

 as broad, sometimes very small and separated from the occipital by 

 the parietals meeting on the median line or by a small supplementary 

 shield X ; occipital shorter and not or but slightly broader than the 

 interparietal, sometimes minute. Pour supraoculars ; first very small, 

 or reduced to a granule, § second longer than third, fourth small but 

 usually larger than first, usually separated from the frontoparietal |l ; 

 four superciliaries, very rai-ely five, second much longer than the others, 

 all in contact with the supraoculars. Eostral narrowly separated from 

 the nostril; a single, small postnasal ; anterior loreal as long as or shorter 

 than second T[ ; four upper labials anterior to the subocular, which is 

 much narrower beneath than above; one or two upper temporals**; 



* As in L. perspicillata. 



t Eostral in contact with the frontonasal in a male from Tunisia. 



i Two females from Lambesa ; one of these has the frontal divided into 

 two by a horizontal suture. 



§ Absent in one specimen examined by Bedriaga; also, on one side, in a 

 female from Lambesa (Werner). 



II In 10 specimens out of 12 examined. This peculiarity is also frequent in 

 Lacerta vivipara. 



IT A sirigle loreal in a male from Algiers. 



** The anterior only exceptionally in contact with the fourth supraocular 

 (male from Algiers, female from Lambesa). 



