126 ME. G. A. BOULENGER ON THE REPTILES 



and the Plateau of Sersou. Strauch obtained it from Tlemsen. It is thus recorded from 

 the three provinces. In Tunis, M. Lataste met with L. muralis at Guelaat-es-Sinam, and 

 on the route from Ferriana to Tebesa. 



The larger green form, var. tiliguerta, Gm. [neapoUtana, Bedriaga), so common in 

 the south of Italy and Malta, is recorded from Tunis by Camerano (Atti Ace. Torin. 

 xiii. 1877, p. 87). 



3. Lacerta peespicillata, Dum. & Bibr. 1839. 



Lower eyelid with a transparent disk. Rostral shield not entering the nostril ; two 

 superposed postnasals ; occipital shield small ; temple uniformly granular. Collar with 

 even edge. Dorsal scales small, granular, 50 or more across the middle of the body. 

 Ventral plates square, subequal, in 10 longitudinal series. Green or bronzy above, 

 uniform or with light ocelli ; uniform greenish white beneath. 



This Lizard is well distinguished from all other members of the genus LaceHa by 

 the presence of a transparent disk in the lower eyelid, which permits the animal to see 

 when the eyes are closed. As far as we know at present, its habitat is restricted to 

 the environs of Oran, where it is common on Mount Santa Cruz ; it was also found 

 in the town of Oran by M. Gazagnaire; its habits are, like those of L. muralis, 

 essentially saxicole. The various statements of the occurrence of L. perspicillata 

 outside the Province of Oran appear to be erroneous '. 



The following descriptive details are taken from the specimens in the British 

 Museum : — 



A series of granules between the supraoculars and the supraciliaries ; occipital 

 smaller than the interparietal, which is at least twice as long as broad ; five upper 

 labials anterior to the subocular. A distinct fold across the throat, from ear to ear ; 

 32 to 34 scales on a line between the chin and the collar ; latter with 9 or 10 shields. 

 54 to 56 scales across the middle of the body ; three transverse series of scales correspond 

 to one ventral shield. 29 transverse rows of ventrals in the male, 35 in the female. 18 

 or 19 femoral pores on each side. A single semicircle of small shields borders the anal. 

 Upper caudal scales smooth or very feebly keeled, truncate posteriorly. The hind limb 

 reaches the axil in the male, the elbow of the adpressed fore limb in the female. 



From snout to vent 58 millim. 



L. piersinciUata is figured by Guichenot, Explor. Sc. Alg., Kept. pi. i. fig. 3. 



2. Psammodromus, Fitzinger, 1826. 

 Nostril between two nasals, in contact with the first labial or separated only by a 

 narrow rim. Eyelids movable, scaly. Collar absent or very feebly marked ; a short 

 fold in front of the arm. Back covered with large, rhombic, strongly keeled and 

 imbricate scales. Ventrals imbricate. Digits with tubercular or keeled lamellse 

 inferiorly. Femoral pores. 



' Cf. Lataste, C. E. Assoc. Frang. At. Sc, Coiigrua d'Oran, 1888, i. p. 191. 



