274 Lacertidse. 



Dorsal scales large, flattened, roiiiidisli-liexagonal or oval, smooth or 

 faintly keeled, rather smaller on the sides, where 3 or 4 correspond to 

 a ventral shield ; 39 to 49 (usually 42 to 46) scales across the middle 

 of the body ; 22 to 31 scales, in the middle of the back, correspond to 

 the length of the head. 23 to 27 gular scales in a longitudinal series ; 

 collar straight-edged, with 8 to 11 plates. Ventral plates in 23 to 27 

 transverse series (23-25 in $, 25-27 in ? ). Preanal large, with a 

 single semicircle of small shields. Scales on upper surface of tibia 

 more or less distinctly keeled, considerably smaller than dorsals. 

 16 to 23 femoral pores (usually 16 to 18) on each side. 26 to 28 

 lamellae under the fourth toe. Caudal scales truncate behind, more 

 or less strongly keeled, often feebly keeled at the base of the tail, in 

 alternately longer and shorter whorls. 



Coloration of upper parts much as in L. muralis typica, sometimes 

 with greenish gloss.* A vertebral series of dark dots is often present, 

 sometimes forming a vertebral streak ; lower parts pale yellow, some- 

 times washed with greenish, with or without small black or rust- 

 coloured spots on the sides of the belly, which are always devoid of 

 blue spots.f For fuller particulars of the coloration I refer to Mehely's 

 detailed description, from which I have drawn an account of the 

 variations in the lepidosis. The following is a tabulation of the 

 numerical characters in the specimens examined by me. 



? 



Arch. Entwicklmech. xxix, 1910, p. 462. 



t As in some Caucasian specimens (var. ehalybdea) on which Mehely has 

 founded his var. armeniaca. These blue spots are also absent in many females 

 of other varieties, and, though rarely, in some males also. 



X If compared with the measurements of Bosnian specimens (above, p. 169), 

 it will be seen that there is no justification for Mehely's statement (1909, p. 600), 

 " Gliedmassen etwas kiirzer," than in L. muralis. 



