LACERTA MURALIS IN WESTERN EUROPE AND NORTH AFRICA. 355 
sides; 42 to 62 scales across the middle of the body, usually 47 to 591; 3 or 4, rarely 
2 or 32 or 4 or 5% transverse series correspond to one ventral plate, 29 to 45 to the 
length of the head. 
Ventral plates in 6 longitudinal and 23 to 52 transverse series; the plates of the 
two median series as broad as or narrower than those next to them. 
Text-fig. 2. 
Preanal region of Lacerta muralis. 
a. @, Eaux-Bonnes. 6. 6, Eaux-Bonnes. c. ¢, St. Malo. 
Prieanal plate (text-fig. 2) very variable, but usually large, bordered by one semicircle 
of small plates, often with an outer semicircle of smaller plates or scales. Scales on the 
upper surface of the tibia granular, more or less distinctly keeled, usually smaller than 
those on the back, rarely nearly as large. 22 to 28 lamellar scales under the fourth toe. 
Femoral pores from 15 to 25 on each side, usually 16 to 214. Caudal scales 
(in the basal fourth) usually narrow, truncate or more or less obtusely pointed, the 
upper more or less strongly keeled, the lower smooth or feebly keeled; the whorls 
alternately longer and shorter, this feature more distinct in some specimens than in 
others; the fourth or fifth whorl behind the postanal granules contains 25 to 32 
scales, exceptionally 20°. 
Coloration. 
Upper surface varying from grey to brown, sometimes with a tinge of greenish; two 
light, whitish, yellow, or greenish streaks or series of spots on each side, the upper 
from the outer edge of the parietal shield to the upper surface of the base of the tail, 
the lower from the upper lip, through the ear, to the groin (Pl. XXIV. figs. 38 & 4); 
between these two streaks, on each side, a black or dark brown band, which may be 
spotted with whitish, yellow, bluish, or greenish ; the back often spotted or marbled 
with dark brown or black; frequently a dark brown or black vertebral stripe or series 
of more or Jess confluent spots. Some specimens, especially males, entirely marbled 
1 The minimum (42) occurs in a female from Vislau, near Vienna, the maximum (62) ina female from 
Dinant (Pl. XXV. fig. 5). 
2 In a male from St. Malo and in a male from Fontainebleau. 
3 In a male from Dinant, in a male from St. Malo, in a female from Eaux-Bonnes. 
* The minimum (13) occurs in a female specimen from Véslau, near Vienna. I cannot agree with Werner 
(Zool. Jahrb., Syst. xiv. 1903, p. 333) when he says that the number of femoral pores increases with age. Af 
least this is conirary to my experience in this lizard, quite young specimens from France and Germany having 
16 to 19, as in adults. 
> Again in the aberrant specimen from Véslau. 
