380 MR. G. A. BOULENGER ON THE VARIETIES OF 
The coloration is the same as in most examples of the typical form, with a dark 
lateral band, light-edged above and beneath, and a dark vertebral streak or series of 
spots; these markings are strongly defined in the very young; the belly of the males 
is marked with thick black dots, and the throat and breast are spotted with black in 
both sexes. ‘This type of markings, which is frequent in the typical form of L. muralis, 
is also that which most nearly approaches the pattern of L. vivipara. 
Particulars of adult specimens (as in the table, pp. 877-8) :— 
ity 2. 3. 4. dD. 6. 
=I 
é 51 55 25 9 21 15-16 ] 
e 41 48 23 9 21 16-15 2 
f°) 56 46 27 8 20 14-16 1 
Ps 56 48) 28) es es 16 2 
a 55 51 27 10 20 16 2 
Measurements :— 
foi 
From snout to vent Syl 56 
Fe 53 fore limb. 22 20 
Length of head. 13 12 
Width of head . 93 9 
Depth of head . 7 7 
Fore limb 18 18 
Hind limb 27 26 
Foot 15 14 
Tail 97 ~=6104 
Enlarged views of parts of a male-specimen are given on Pl. XXY. figs. 16-18. 
Prof. v. Méhely has recently (Ann. Mus. Hung. ii. 1904, p. 377) expressed the 
opinion that the Caucasian form L. saxicola is to be regarded as representing the 
ancestral stock out of which Z. vivipara has been evolved. In my opinion, the variety 
here described establishes an even closer connection between the typical L. muralis and 
L. vivipara than is to be found in any of the Eastern forms yet described, including 
Nikolsky’s L. derjuginii, which is also intermediate between the two species. A much 
closer knowledge of the variations of these lizards than we now possess is required 
before we can profitably speculate on this question. 
Var. BRUEGGEMANNI. 
Bedriaga, Arch. f. Naturg. 1879, p. 304, pl. xvii. fig. 1. 
L. muralis, var. nigriventris Eimer, Zool. Stud. Capri, ii. p. 80 (1874). 
? Podarcis muralis, var. roseiventris, part., Massalongo, Saggio Erp. Ven. p. 35 (1854). 
Dr. de Bedriaga tells us that there occur on the high walls of the arsenal of Spezia 
and in the moat separating this from the road two forms of L. muralis, the neapolitana 
(campestris) and another resembling the typical form in size and form, but remarkable 
