584 MR. G. A. BOULENGER ON THE VARIETIES OF 
small scales (65 across the middle of the body) is a further approximation to the 
Corsican-Sardinian form. Camerano has already pointed out that some of the Ligurian 
specimens examined by him, with a much flattened head and reticulate markings, are 
suggestive of the var. dedriage from the mountains of Corsica. I am much inclined 
to think that the vars. qguadrilineata and bedriage are directly derived from the 
var. brueggemanni!. I may add that quite young specimens from Lerici, which I 
provisionally refer to this variety, lack the dorsal reticulation and the ventral spots, and 
cannot be distinguished from French specimens of similar size. 
Var. NIGRIVENTRIS. 
Podarcis muralis, var. nigriventris Bonaparte, Icon. Faun, Ital., Anfib. pl. —. fig. b (1836). 
Lacerta muralis neopolitana, vax. nigriventris Bedriaga, Arch, f. Nat. 1879, p. 277, and Abh. Senck. 
Ges. xiv. 1886, p. 213. 
Lacerta muralis fusca, var. nigriventris Bedriaga, Arch. £. Nat. 1879, p. 288, pl. xvii. fig. 3. 
Lacerta muralis neapolitana, var. ventromaculata Bedriaga, Bull. Soc. Zool. France, 1879, p. 205. 
Lacerta muralis, var. flaviundata Bedriaga, |. c. p. 218. 
Under this name Bonaparte has figured a Wall-Lizard, from Rome, measuring 
210 millim., which has been regarded by Bedriaga as a variety of his subspecies 
neapolitana, on account of its large size and the green colour of the spots which appear 
between the meshes of the black network. Similar lizards occur, according to Bedriaga, 
at Arezzo in Tuscany, in the Roman Campagna, on a rocky islet, La Scuola di Pianosa, 
close to Pianosa, in the Adriatic, and on Patmajola and Salina, Lipari Islands. 
In describing his LZ. muralis fusca, var. nigriventris, from Rome, Bedriaga distinctly 
disclaimed any identification with Bonaparte’s var. nigriventris, and he soon after altered 
the name to flaviundata. ‘This variety is described, from a single male specimen (now 
in the British Museum), as deep black above, with numerous golden-yellow wavy cross- 
streaks ; the white ground-colour of the belly to a great extent disappears under the 
large black spots; the ventral shields of the outer row are green, On comparing the 
figure with that given by him of Z. drueggemanni on the same plate, a striking resem- 
blance in form and markings will be observed between the two lizards, the chief 
difference being that the black is more developed in var. flaviundata and the green 
colour is replaced by yellow. 
I owe to the kindness of my friend Dom Grégoire Fournier, O.S.B., an interesting 
little series of these black lizards collected by Dom Theodore Néve, O.S.B., on the outer 
walls of Rome, near St. Peter’s, and the series is of importance as completely bridging 
over the gap between the var. flaviundata and the var. nigriventris, which are seen to 
represent merely individual differences. ‘The specimens reached me quite fresh, and 
1 Since this paper was set up in type, I have received from Prof. Camerano a male specimen from Pianosa, 
which may well be regarded as intermediate between the vars. brueggemanni and bedriage. It has 70 scales 
across the body. Specimens from Elba, communicated to me by Count Peracca, are true var. brueggemanni 
with 58 to 65 scales across the body. 
