Psammodromtts. 173 



preserved in the Florence Museum, I find it belongs to Ophiops 

 elegans, a lizai'd which is not likely to occur in Sai'dinia any more 

 than Psammodromus liispanicus. 



3. PSAMMODROMUS MICRODACTYLUS. 



Algira (Zerzuuiia) luicrodactyla, Boettg. Zool. Auz. 1881, p. 571, 

 and Abh. Senck. Ges. xiii, 1883, p. Ill, pi. i, fig. 2. 



Psammodromus microdactijlus, Bouleng. Cat. Liz iii, p. 49(1887), 

 Ann. & Mag. N.H. (6) iii, 1889, p. 3U4, and Tr. Zool. Soc. xiii, 1891, 

 p. 127; Doumergue, Erp. Oran. p. 139, pi. ix, figs. 6, 7 (1901). 



Body moderately depressed. Head rather small, feebly depressed, 

 convex on the occiput, 1? to 1} times as long as broad, its depth equal 

 to the distance between the anterior corner of the eye and the 

 tympanum, its length 3^^^ to a1:)0ut 4 times in length to vent ; snout 

 obtusely pointed, with strong cauthus and concave loreal region, as 

 long as postocular part of head ; a sharp keel below the eye, on the 

 freno-ocular and subecular shields. The hind limb reaches the elbow of 

 the adpressed fore limb or the axil in females, the axil in males ; foot 

 a little longer than the head ; digits feebly compressed, with very promi- 

 nent, obtusely keeled tubercular lamellae inferiorly (the tubercles in two 

 series except distally). Tail 1|^ to Ij^ 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; frontonasal broader than long; prefrontals forming an 

 extensive suture; frontal 1 J- to 2 times as long as broad, as luug as its 

 distance from the end of the snout, narrower behind than in front, 

 lateral borders more or less concave ; parietals as long as broad or 

 slightly longer, with convex outer border; interparietal 1}^ to 2 times 

 as long as broad, occipital shorter but often a little broader.* Four 

 supraoculars, first very small, second as long as third or a little 

 longer, fourth lai'ger than first and often f separated from the fronto- 

 parietal ; four superciliaries, second much longer than the others, all in 

 contact with the supraoculars. Rostral narrowly separated from the 

 nostril ; a single postnasal ; anterioi" loreal as long as or a little shorter 

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

 much narrower beneath than above ; three upper temporals, anterior 

 usually in contact with the fourth supraocular, separated from 3 or 4 



* Absent in one of the type specimens, according to Boettger. 



t In 7 specimens out of 12 examined. 



X 3 on one side in a female from Tangier. 



