ACANTHODACTTLUS PAKDALIS. 153 
I have met with A. partialis only in the Maryut District and at Alexandria 
on stony semi-arid land, but Gasco has recorded an example from the neighbourhood 
of Cairo. 
In a gravid female of this species, each egg measured 11 millim. long, the length 
of the body of the lizard, from the snout to the vent, being only 62 millim. In a 
female of A. scutellatus, 65 millim. from snout to vent, there was only one egg in the 
left oviduct, and so large — 13 millim. in length — that with the two eggs that were 
present in the right oviduct the entire abdominal space available was completely 
filled up. This paucity of eggs may possibly explain why the young of the members 
of this genus and also of Eremias are so seldom observed compared with the young of 
other genera of lizards. 
I captured a male and female (PL XXI. figs. 2 & 3) in sexual embrace in the 
month of April, and it was this female which already had her oviducts full of mature 
eggs. 
It ranges southwards to Somaliland, northwards to Syria, and westwards from the 
delta of Egypt through Cyrenaica, Tripoli, Tunisia, and Algeria to the Sahara, at various 
altitudes up to 3000 feet. 
In seventy-six specimens examined by me, the exception was to meet with an 
entire first supraocular. It was generally broken up into small pieces varying from 
2 to 10 in number, while in others it was granular 1 . Lizards, however, with this 
shield entire are met with in Syria (Beersheba, Jerusalem), Tripoli (Africa), Tunisia, 
Batna, the Aures Mountains, Bou-Saada, and from the Sahara between Biskra and 
Tuggurt. In all, the fourth supraocular was invariably granular. The subocular 
occasionally reaches the labial margin. It does so in six specimens from the Maryut 
District, in one from Jerusalem, and in another from Algeria. In the five other 
species of this genus in which the subocular is excluded from the labial margin, 
viz. A. boskianus, syriacus, schreiberi, scutellatus, and cantoris, I have never met with 
any exception to the rule, whereas in A. vulgaris, tristrami, and micropholis, in which 
that shield normally borders the lip, it is occasionally excluded. A. boskianus, syriacus, 
and schreiberi are all closely allied species, and A. vulgaris, partialis, and tristrami form 
another group. The two species A. scutellatus and A. cantoris are intimately related 
to each other by the structure of their digits and they cannot rightly be compared with 
any of the others. A. micropholis, on the other hand, has a distinct relationship 
with A. boskianus, and through it to A. scutellatus and A. cantoris. 
In A. partialis a supplementary labial is sometimes present. Thus it occurs in one 
specimen from each of the following localities, viz. Maryut, Duirat, Batna, Algeria ; in 
five from Bou-Saada ; in the same number from the Aures Mountains ; and in seven 
1 In one of the types of Scapteira maculata, Gray, from Tripoli, it is broken up into granules and small 
Ehields, in all 10 in number; and in this respect it closely resembles the lizard described by Audouin as 
Lacerta savignyi, in which the first supraocular is represented as reduced to S pieces. 
X 
