VARIETIES OF THE WALL-LIZARD. li7 
as the following tabulation of the two type specimens in Dr. Werner’s Collection 
shows :— 
i Dy. 3. 4, oe 6 he 
oye cae Te 5A 26 10 PAE 25-26 28 
70 5o 27 10 28 24 29 
9 
In both specimens the occipital is small and separated from the interparietal. In 
the larger specimen, figured on Pl. XIX. fig. 11, the masseteric disk is small on one 
side and absent on the other. 
Measurements (in millimetres) :— 
Mromvendiotsnout tonventy 9) .0in) =) 4) Wen smeee 
5 a 45 foreslunb) pn oO 
TB ihval 9. Gt Sh» eles Cereal es ne aneermerl o wese a US) 
Niidthvot@heady ess ck se als Seen ee me 
IDSA GENE 5 6 5 oo og © p 8 oo S 10 
Poreglimbwee wes 2 Mey coke (od ee eee 
Mindghimbsee ee 5 es sete Soc A ee ah 
ROGER TUL. in) Sat eas 2) Bas el 
Mail(reproduced)y, .9- 2 ] wo. «= & JOS 
Vars. camprstRis De Betta and serra Raf. 
What I have said of these two forms @ propos of Italy (Tr. 1905, p. 388) applies 
equally to the East Coast of the Adriatic, where the former passes into the latter from 
north to south, thus presenting the same difficulty for their sharp distinction, which 
accounts for the fact that they have been confounded under one name by Bedriaga 
(L. muralis neapolitana) and by Werner (L. muralis, var. merremit or L. serpa). All 
the large green Wall-Lizards from the mainland of Istria and most of the islands 
between Istria and Croatia, are unhesitatingly referable to the var. campestris of 
De Betta, their habitat being uninterruptedly connected with that of the original 
specimens (from Venetia) ; in North Dalmatia (Zara) the two varieties occur together, 
whilst from South Dalmatia (Spalato) and the southern islands of the Adriatic (Cazza, 
Pelagosa Grande, Pelagosa Piccola), all the specimens I have been able to examine 
agree with the definition I have given of the var. serpa. The combination of 
characters (any one of which may exceptionally fail) on which I have based my deter- 
minations of these easternmost representatives of the two varieties, campestris and 
serpa, are, for the former as distinguished from the latter, the denticulated collar, the 
broader and more pointed caudal scales, and, as a rule, a shorter head, larger scales 
(53 to 62 across the body and 22 to 28 along the throat as against 60 to 78 and 25 
to 38), and fewer lamellar scales under the fourth toe (25 to 29 as against 27 to 32), 
and also the relation of the rostral shield to the nostril, as I have mentioned in 
232 
