HEMIDACTTLUS TUBCICUS. 83 
Var. sinaita. (Plate V. fig. 4.) 
Hemidactylus turcicus, Strauch, Mem. Acad. St. Pe"tersb. (vii. ser.) xxxv. no. 2, 1887, p. 32 (specim. 
4826 only). 
Hemidactylus sinaitus, Blgr. Cat. Liz. B. M. i. 1885, p. 126; Proc. Zool. Soc. 1895, p. 532; Ann. 
Mus. Civ. Genova, ser. 2, xvii. (xxxvii.) 1897, p. 277; Anderson, Proc. Zool. Soc. 1895, p. 639; 
Herpet. Arabia & Egypt, 1896, p. 98. 
1 juv. "VVadi Haifa. Major Henry d'Alton Harkness. 
4 (J, 3 ? , and 1 juv. Suakin. Surgeon-Captain B. H. Penton, D.S.O. 
5 (J and 4 $ . Suakin. 
1 S and 4 ? . Durrur. 
In the lizard which Mr. Boulenger described from the Sinaitic Peninsula as 
H. sinaitus the nostril is formed by the rostral and three nasals, the first labial being 
excluded. In my collection there are 26 specimens from Suakin and Durrur that 
agree with it. 
Twenty-two of them have the nostril defined only by the rostral and three nasals, 
but in four the first labial enters into the nostril. 
Mr. Boulenger has also described from Western Somaliland two specimens, which 
he referred to H. sinaitus, in which the first labial is excluded by a small shield. 
In describing a collection of reptiles from Aden, brought together by Colonel 
Yerbury, I referred six geckos to H. sinaitus, but only in one of them was the first 
labial excluded on both sides of the head, while in one it entered on one side and did 
not do so on the other. In the remaining four specimens, the first labial shield 
entered as a minute point, but in so doing produced a nostril structurally identical 
with the nostril of H. turcicus. It is thus evident that the nostril in H. sinaitus is 
subject to variation, but at the same time the rule is for the first labial to be excluded. 
In the type of //. sinaitus there are no enlarged subcaudals, and they are also 
absent in the generality of the Suakin and Durrur geckos ; but individuals from these 
localities are met with, as also in the Aden lizards, in which the subcaudals are only 
slightly transversely enlarged, whereas three of the Aden specimens and two from 
Western Somaliland have enlarged subcaudals as in H. turcicus (PI. V. fig. '&). 
But Professor Giglioli states that in Italian examples of H. turcicus these plates are 
occasionally but little enlarged. 
The dorsal tubercles of H. sinaitus are somewhat smaller than those of H. turcicus, 
and in this respect they resemble the Eastern Sudan specimens and those from Aden ; 
but in those from the latter locality, some are even smaller than in the type, whereas 
in the Western Somaliland geckos they are quite as large as in H. turcicus. 
The following table shows the distribution of the lamellae in //. turcicus and in its 
variety sinaita : — 
m2 
