198 MR. G. A. BOULENGER ON THE 
Measurements (in millimetres) :— 
From end of snout to vent. .. . . 83 70 60 68 5h 
A “ ° forelimbs sy 285) 9 044 27. 28 260s 
ene thiol head\.. ss, Ginna sete PelOn (lop Gaels 
iWadEhiofikesd, mc). een ato wwe Oe SU Lil 
Depthrof/head: <r) iu cuca ee aL 65 6 i 5 
Fore limb Ro is is et OOW Reon = 0. eek, MALO. 
Bindsdlimb. <- c- \ oc. ee Oo eOe, Or eo) 
Hoot .<. 2. & tke iee cules Come culy © F200" "lip 
The largest specimen examined by Méhely, a female from Batum, measures 87 mm. 
from snout to vent. 
Although one of the most distinct forms of LZ. muralis, the var. rudis is, however, 
connected by intermediate specimens with the var. saxicola, as observed by Méhely. 
The specimens figured on Pl. XXII. are males from Batum (fig. 7), in Dr. de 
Bedriaga’s Collection, and from Tchorok (fig. 8). 
Var. CAUCASICA. 
Lacerta muralis, var. saxicola (non Eversm.) Kessler, Tr. Soc. Nat. St. Pétersb. viii. 1878, p. 152. 
Lacerta muralis, var. fusca, f. praticola, part., Boettg. Ber. Offenb. Ver. Naturk. 1880, p. 91. 
Lacerta saxicola, subsp. gracilis Méhely, Ann. Mus. Hung. vil. 1909, p. 555. 
Lacerta caucasica Méhely, t.c. p. 560, pl. xxi. figs. 1 & 2; Nikolsky, Ann. Mus. Zool. Ac. 
St. Pétersb. xv. 1910, p. 495; Lehrs, Festschr. R. Hertwig, ii. p. 234, pl. xiv. figs. 4-6 
(1910). 
This form, characterised by a distinctly serrated collar, large gular and dorsal scales, 
and a low number of femoral pores, connects LZ. muralis with L. derjugint Nikolsky. 1 
have no hesitation in bestowing on it the name caueasica proposed by Méhely, as two 
of the specimens examined by me, now in Dr. de Bedriaga’s Collection, formed part 
of the series from Mleti, in the Aragwa Valley, Transcaucasia, originally referred by 
Boettger to ZL. praticola, and since made the types of a new species, one of the 
characters of which is for the males to have the femoral pores hardly more developed 
than the females. This is so in the Mleti specimens here described (Pl. XXIII. 
fig. 3), whilst two males from the summit of Mt. Fatguss, near Vladikaukas 
(Pl. XXIII. fig. 4), part of a series in the St. Petersburg Museum, referred by Nikolsky 
to L. caucasica, have very strongly developed pores,-and would probably have 
been made the types of a distinct species or subspecies had they been known to 
Méhely. 
In the specimens examined by me the caudal scales are not markedly pointed, and 
therefore these specimens could not be determined as L. caucasica by means of 

