596 MR. G. A. BOULENGER ON THE VARIETIES OF 
Scales on upper surface of tibia minute, keeled, smaller than dorsals; 19 to 29 
femoral pores on each side (usually 20 to 26); 28 to 36 lamellar scales under the 
fourth toe. 
Upper caudal scales (Pl. XXVIII. fig. 3a) strongly keeled and truncate or very 
obtusely pointed ; 30 to 38 scales in the fourth whorl behind the postanal granules. 
The enormous amount of variation in colour and markings which this form 
undergoes, often irrespective of localities and among individuals living together, may 
be gathered from the above synonymy, and especially from the general accounts given 
by Kimer. Suffice it to say, for the purposes of the present work, that some specimens, 
females and young, closely agree in colour and markings with de Betta’s var. campestris 
(Kimer’s s/riata), which may be regarded as the primitive type from which the spotted, 
reticulate, and uniformly coloured forms are derived. ‘The colour of the head and 
back varies from greyish brown to olive, grass-green, or bluish green; striated 
specimens are the exception, most of the specimens being spotted or reticulated with 
black (Pl. XX VII. figs. 4 & 6), the black spots often forming longitudinal series 
(Pl. XXVII. fig. 3), sometimes wavy cross-bands ; some specimens show only faint 
traces of darker markings and lead to others which are uniformly olive or yellowish 
brown (LL. olivacea Raf., modesta Eimer). A blue or green ocellar spot is often 
present above the axil,and sometimes acquires a large size. The lower parts are 
usually white or greenish white, and without spots, except on the outer row of ventral 
plates, which often bear blue or greenish-blue spots. In some specimens from Sicily 
(var. sicula Bp.), which in structural characters entirely agree with the var. serpa, 
the belly is orange or red in the males, yellow or white in the females, these 
specimens being further remarkable for the brilliant green colour of the back, bordered 
on each side by a more or less distinct whitish streak, as figured on Pl. XXVII. 
He tt: 
The most remarkable colour-variation is that exhibited by the lizards found on the 
Faraglioni rocks close to Capri (var. cerulea Eimer, faraglionensis Bedr.): black or 
bluish black above, with more or less distinct markings of a more intense black, 
sapphire-blue or greenish blue beneath; pale blue spots usually present on the sides ; 
the supra-axillary blue ocellus always distinct (Pl. XXIII. fig. 2). 
Specimens with blue belly and blue or blackish back, with or without lighter blue or 
green spots, are reported from the Mezzagiorno rock near Palmarola, and Santo Stefano 
Island near Ventotene. The vars. cwruleo-cerulescens, cerulescens monaconensis, and 
cerulescens gallensis of Eimer, from other small rocks near Capri, also with blue 
belly, are practically intermediate in the dorsal coloration between the var. cwrulea 
and the lizards of Capri. 
‘ J. Scherer, Blatter f. Aquar.-u. Terrar.-Kunde, xiv. 1903, p. 288, regards Z. sieula as a species distinct 
from ZL. serpa, but Iam unable to confirm the distinctive characters (collar, supraciliary shields, &ec.) which 
he adduces in favour of such a separation. 
