ACANTHODACTTLUS PAEDALIS. 155 
The digits of different individuals of the various species vary considerably in length, 
but they are shorter, as a rule, in A. partialis and in A. tristrami than in the other 
species. In A. syriacus, A. vulgaris, and A. schreiberi they are a little longer, and still 
more so in A. boskianus, while the longest digits are met with in A. micropholis, 
A. scutellatus, and A. cantoris. The Somaliland lizard described by Lataste as 
A. vaillanti, which measures 74 millim. from snout to vent, has its fourth toe 15 millim. 
long, whereas a specimen of A partialis from the Aures Mountains, with its body 
76 millim., has the corresponding toe only 1T4 millim. in length. On the other 
hand, an individual from the Marjmt District, 57 millim. from the snout to the vent, 
has its fourth toe 11 millim. long, so that the variation in the length of the digits of 
A. partialis is very considerable. 
The lizard described by Audouin under the name of Lacerta savignyi is known only 
from the figure given by Savigny 1 . From the fact that it appears as one of the 
discoveries made by the members of the French Expedition we are entitled to conclude 
that it was obtained by them in Egypt. Up to the present time, however, not a single 
lizard agreeing correctly with the figure has been discovered either in Egypt or 
elsewhere, but one or two in Egypt and in Somaliland have been found so resembling 
it as to suggest the possibility that the difficulty that exists in reconciling them with 
the drawing may be due to the imperfections of the latter. 
Professor Vaillant in his account of the Acanthotiactyli collected on Eevoil's 
Expedition to Somaliland referred them to two species, viz. to A. vulgaris and 
A. savignyi. They were apparently all collected at Lasgori on the sea-coast. I 
have been enabled carefully to examine these specimens, thanks to the courtesy of 
Professor Vaillant. They have already all been fully described by M. Lataste in his 
valuable contribution to our knowledge of this genus. The conclusion he arrived at 
regarding them was that they represented two species, viz. : one which he considered to 
be A. savignyi, Audouin ; and the second a new species, which he named A. vaillanti 2 . 
In 1887, the third volume of Mr. Boulenger's Catalogue of Lizards appeared, in 
which he stated that he had examined the types of Lichtenstein's Lacerta partialis, 
and had found them to be specifically identical with A. bedriagai, Lataste (types of 
which were in the British Museum, presented by M. Lataste himself), and with the 
specimens which Lataste had referred to A. savignyi. 
After a careful examination of the specimens 5847, 8 and 2 , from Lasgori, Somali- 
land, i. e. probably the two which were originally regarded by Prof. Vaillant as 
A. vulgaris, it appears to me that they present all the features of A. partialis. 
In these specimens the first supraocular is large with a few granules externally, while 
the fourth is completely decomposed. The snout is more or less elongate, and recalls 
1 Descr. de FEgypte, H. N. i. ? 1829, pp. 172-173, Suppl. pi. i. figs. 8. i-8. 5. 
2 Ann. Mus. Civ. Genova, (2) ii. 1885, p. 509. 
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