160 MR. G. A. BOULENGER ON THE 
shorter than its distance from the end of the snout. Some specimens, male and 
female, are of a dull olive-brown on the back, with black spots and a broad black 
vertebral stripe (Pl. XVII. fig. 8). 
It is noteworthy that in the Filfola lizard, as well as in those from Malta and Linosa, 
there is not that considerable difference in the number of transverse series of ventral 
plates between the sexes as is generally the case in the typical form and other varieties 
of I. muralis. Thus my tables show the numbers to be 24 to 28 (usually 25) in 
males, 27 to 32 (usually 29) in females of the typical form, whilst in the Maltese- 
Linosa lizard they are 24 to 29 (usually 26 to 22) in males, 28 to 31 (usually 28 or 29) 
in females. In this respect the var. jfilfolensis resembles the var. bedriage, with 
24 to 28 series (usually 25) in males, and 25 to 28 (usually 26) in females. 
This lizard inhabiting Linosa appears to be identical with that of Malta, as I have 
already pointed out (Tr. 1905, p. 401). 
I am indebted to Dr. de Bedriaga for eight specimens, four of which (23,22) 
were received alive. 
In one of the male specimens the top of the head and a broad median dorsal stripe 
are of a slightly reddish brown, the sides are black with round greenish yellow spots ; 
outer row of ventral shields black and blue; belly pale pink with a longitudinal series 
of large black spots on the second row of shields (Pl. XVIII. fig. 5); chin and throat 
yellowish white, with large black spots or marblings. In another male a black 
network extends over the whole back, whilst in further individuals of the same sex 
(Pl. XVIII. fig. 4) the upper parts are black with small light spots, exactly as in the 
lizard from Filfola. 
The larger female, received alive, is dark brown above, with a black network 
enclosing small yellowish spots, and with traces of three black longitudinal stripes, 
the median very narrow; belly pinkish, the sides spotted with black ; small blue spots 
on the outer row of ventral shields. The smaller female also dark brown above, with 
a narrow black vertebral streak and a black lateral band edged with whitish above and 
below (Pl. XVIII. fig. 6); lower parts as in the preceding. 
The following tabulation refers to the 8 specimens presented by Dr. de Bedriaga and 
to the one (last on the list) received from the late Prof. Giglioli, and noticed and 
figured in my previous contribution (Tr. 1905, p. 401, pl. xxvii. fig. 8). 
ils 2. 3. 4, dD. 6. Ue 
3 70 Vi 27 10 86 25496 35 
y 65. 95), 26° 12 88h S67 34 
- 65 67) / 27 10). 20, eeieeP - 35 
EC 6 70 27 9. 36 425-24 35 
. 62 69 2 11 28 21-23 35 
9 61) ye ‘e.28" oh “Seow eiees. a1 
: 54 9B ~—CO ezo 22 31 
. 49 69 28 28 92221 31 
. BB WEB. yess 9 28 23 34, 
