358 ME, G. A. BOULENGEK ON THE VARIETIES OE 



Specimens from the Pyrenees at or near Eanx-Bonnes (700-1100 metres), of which I 

 have examined over 50, are in no way distinguishable from the Wall-Lizard of the 

 plains of France. But specimens from a greater altitude (1 545 m.) in the neighbourhood 

 of the Pic du Midi have been alluded to by Bedriaga (Arch. f. Nat. 1879, p. 290) as 

 Remarkable for their strongly depressed body and coarse dorsal scaling, and their general 

 appearance when in the open had suggested Lacerta vivipara to their collector, 

 F. Lataste. The dorsal scales are described as very flat, but with a more or less distinct 

 keel ; and, although the caudal scales are only feebly keeled, the whorls project on the 

 sides to form a very distinct serration. The masseteric disk is usually broken up into 

 5 or 6 large scales. Dark ocelli are usually present above the axil. 



From a brief allusion again made to these lizards by Bedriaga in his monograph 

 Abh . Senck. Ges. xiv. 1886, p. 196), Mehely (Ann. Mus. Hung. ii. 1904, p. 371) is 

 inclined to suspect the existence of a new species in the Pyrenees. As there is fortunately 

 one of these specimens in the Lataste Collection, I can confidently say that a specific 

 separation from L. muralis is out of question, and I append a few particulars of this 

 unique example, a female, which is figured on PI. XXIV. fig. 5 and PI. XXV. fig. 6. 



Head rather short and but moderately depressed, its greatest depth equalling the 

 distance between the anterior border of the eye and the tympanum. Hind limb not 

 quite reaching the wrist of the adpressed fore limb ; foot not longer than the head. 



Frontal shield a little shorter than its distance from the end of the snout 1 ; first 

 supraciliary in contact with the second supraocular; occipital shorter, but a little 

 broader, than the interparietal ; nasal reaching or nearly reaching the anterior loreal ; 

 four anterior upper labials; masseteric disk very small on one side, indistinct on the 

 other. 



Only 19 gular scales and granules on the median line 2 ; collar with entire edge, 

 formed of 9 plates. 



Dorsal scales granular, flat, rounded, faintly keeled, larger on the back than on the 

 sides, where 3 correspond to a ventral plate ; 50 scales across the middle of the body ; 

 32 transverse series correspond to the length of the head. 28 transverse series of ventral 

 plates. 



Scales on upper surface of tibia feebly keeled, much smaller than on the back (8 rows 

 of these scales corresponding to 5 dorsals). 



Femoral pores 17-16. 24 lamellar scales under the fourth toe. 



Caudal scales truncate and rather feebly keeled, the whorls very distinctly longer and 

 shorter alternately and detached at the sides, forming a strongly serrated outline ; 

 24 scales in the fourth whorl. 



Brown above, with two white, black-edged streaks on each side, and a vertebral series 



1 Quite in the same proportion as in Mehelv's Lacerta Tiorvathi. 



- Just below the minimum recorded in the typical form from other localities. 



