210 



9 Portes tie Fer, Algiers (type) 

 ij Tpukous (type) 

 „ Tafrent 



cJ Batna 



Wed Sedeur 

 c? Tunis, P.M. 



J Muila, nr. Tunis 

 5 Temasmida, Tunisia 

 ,, Periaua 



„ Hadedj des Matniata, 

 (^ Susa, Tunisia (type) 



9 Tunisia, L.M. . 



Habitat. — Algeria (Tell and High Plateaux), Tunisia, and Tripoli 

 (Cyrenaica). Its reported occurrence at Biskra (fide Boettger) is, 

 as pointed out by Werner, probably due to a mistake. 



Very closely allied to 0. elegans and evidently derived from the same 

 common ancestor, but less advanced in the absence of a series of 

 granules bordering the supraoculars, and more so in the generally larger 

 size of the dorsal scales and the greater reduction or loss of the 

 occipital shield. 



