358 MR. G. A. BOULENGER ON THE VARIETIES OF 
Specimens from the Pyrenees at or near Kaux-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 (1545 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), Méhely (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 LZ. muralis is out of question, and I append a few particulars of this 
unique example, a female, which is figured on Pl. XXIV. fig. 5 and Pl. XXYV. 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!; 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; 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 
* Quite in the same proportion as in Méhely’s Lacerta horvathi. 
* Just below the minimum recorded in the typical form from other localities. 
