640 DB. J. ANDEESOU' OJT BEPTILES AKD [June 1 8, 



on the fore and hind feet of this species as illustrated by four speci- 

 mens from Aden : — 



The narrower and shorter digits, the fewer lamellae, the smaller 

 dorsal tubercles, and the exclusion generally of the first labial 

 from the nostril are the features that distinguish E. sinaitus from 

 H. turcicus. 



The coloration of these Aden specimens is much paler than that 

 of the tvpe from Mount Sinai, and in this conforms to that 

 generally distinctive of Geckoes from arid and desert localities. 

 The general colour is pale oUve-white, many of the tubercles 

 being dark brown and others white. There is a broad brown band 

 from the snout to the eye prolonged backwards along the side of 

 the neck in a paler tint. The tail is more or less spotted with 

 brown, the spots tending to form transverse bars. Underparts 

 white. 



This is the first record of the presence of this species in Arabia 

 proper. 



Measurements ^ of 4 specimens. 



" It was very plentiful under some old matting that had been 

 thrown down in the so-called forest, or more properly garden, at 

 Shaikh Othman. It was generally to be found under old logs 

 and other objects lying on the ground." 



4. HEiUDACTXLUS TEEBUBii, n. sp, (Plate XXXVI. fig. 1.) 



1 S • Lahej. 



1 <J. Haithalhim. 



Snout moderately long, exceeding the distance between the 

 posterior border of the eye and the ear, and somewhat spatulate 

 in form. Eye large, its long diameter equalling half the distance 

 between its anterior border and the snout. Ear crescentic, half 

 the diameter of the eye. Nostril formed by the rostral, labial, and 

 3 nasals^. Body covered with minute flat rounded granules with. 

 numerous large strongly trihedral tubercles intermixed and 

 arranged in sixteen more or less longitudinal series, and the head 



1 All measurements are in millimetres. 



•^ On one side the first labial and lowest nasal are confluent. 



