214 THE REPTILES OF EGYPT. 
At Wadi Haifa, lizards with the typical coloration also show indications of a pale 
dorso-lateral band. Their lepidosis is 28, and they attain to 104 millim. from the 
snout to the vent. Proceeding still further northwards to Philse and Assuan, the 
number 28 still prevails, and the mixed coloration of both the typical form and of 
var. humilis is preserved ; but at the former of these localities 30 rows of scales are 
met with. Specimens with 28 and 30 scales are 112 millim. long. 
At Luxor, however, although the usual markings are very distinct, a pale lateral band 
arises from each side of the occiput. In some, it only reaches a short way beyond the 
shoulder, while, in others, it is prolonged along nearly the entire length of the trunk. 
These pale bands are generally spotted with white, while the mesial brown band is 
unspotted. In one presenting these characters a short dark brown band from behind 
the ear is superadded, and is continued over the shoulder, marked with white spots, 
while in another the spots are nearly obsolete. These Luxor varieties thus lead into 
the one from Tangiers described and figured by Boulenger as vittata, whilst, at the 
same time, they have a strong resemblance to tiligugu ; and the coloration of some of 
them resembles that of a specimen of that variety captured by me at Hammam R'irha, 
in Algeria, but differs from it in the absence of the dark lateral band that occurs 
below the pale dorso-lateral band. In their coloration they also resemble specimens 
from Duirat, Tunisia, which are more or less intermediate between typical ocellata and 
tiligugu. 
In the oasis of Khargeh, to the south-west of Luxor, the usual spots are obsolete in 
one specimen, except on the posterior part of the body and on the tail, with distinct 
indications of pale lateral bands. In the only other example from the same locality 
the upper surface is uniform pale olive-brown unspotted, except on the tail, and it also 
has pale lateral bands. These specimens have 28 rows of scales, and the largest 
measures 06 millim. from snout to vent. These Luxor and Khargeh lizards thus 
present nearly the same characters as the Tokar and Suakin individuals already 
mentioned, so that they fall under var. humilis, Blgr., but they attain to a greater size 
than any typical example of the species from Lower Egypt, as the largest is 122 millim. 
from snout to vent, whereas the largest individual from the Maryut District is only 
105 millim. 
In the Fayum and at Gizeh, 28 is more prevalent than 30, but to the north of this 
30 is almost universal, and as we reach the coast-line of the Mediterranean examples 
with 32 rows of scales round the body occur, thus overlapping the lepidosis of tiligugu. 
From the oasis of Siwah, to the west of Alexandria, I have received, through the 
assistance of Mr. Birdwood, five specimens 1 , which I suppose are the first that 
have ever been collected in that region, so difficult of access. Although all of 
them have 30 rows of scales round the body, each varies considerably in colour. 
In none is there any pale lateral band, but the general tint of the upper surface 
1 These specimens are not included in the table on p. 2] 9, as it was in type before they were received. 
