Eri'tnias 261 



Habitat. — Egypt, Nubia, and Eastern Soudan, Tripoli, Tunisia, 

 Algerian Sahara, Arabia, Syria, Transcaspia, Persia, Baluchistan, 

 Afghanistan, Siud. 



I have examined the type specimens, from Egypt, in the Berlin 

 Museum. 



Var. OLIVIERI. 



Lacertaolivieri, part.. And. Descr. Egypte, Rept., Suppl. p. 175, pi. ii, 

 fig. 2 (1829) ; M.-Edw. Ann. Sc. Nat. xvi, 1829, pp. 73, 84. 



Ereinias cjuttulata (uon Licht.), Dum. & Bibr. Erp. Gen. v, p. 312 

 (1839); Gray, Cat. Liz. p. 41 (1845); Strauch, Erp. Alg. p. 38 

 (1862). 



Eremias pardalis (nou Licht.), A. Smith, 111. Zool. S. Afr., Rept. 

 pi. xlviii, fig. 13 (1845) ; Guicheu. Explor. Sc. Alg., Rept. p. 15, pi. i, 

 fig. 2 (1850) ; Strauch, op. cit. p. 39. 



Podarces (Mesalina) simoni, Boettg. Zool. Anz. 1881, p. 571, and 

 Abh. Seuck. Ges. xiii, 1883, p. 116, pi. i, fig. 3. 



Ereinias guttulata, part., Bouleng. Cat. Liz. iii, p. 87 (1887), and 

 Tr. Zool. Soc. xiii, 1891, p. 132 ; Werner, Verh. Zool.-bot. Ges. Wien, 

 xliv, 1894, p. 82; Anders. Zool. Egypt, Rept. p. 174 (1898) ; Werner, 

 Zool. Jahrb., Syst. xxvii, 1909, p. 608. 



Ereinias guichenoti, Doumergue, Erp. Oran. p. 200, pi. xv, fig. 2 

 (1901). 



Eremias gnttulata, var. olivieri, Bouleug. Journ. Zool. Res. iii, 1918, 

 p. 9. 



When extreme examples of this form, from Morocco or Oran for 

 instance, are compared Avith the typical form from Egypt, the 

 differences are so striking that one would not hesitate to regard it 

 as fully entitled to specific rank. The distinction, however, ))reaks 

 down when other specimens, from the Algerian Sahara and from 

 Sind, are taken into consideration, and I feel compelled to regard it 

 as a variety, to designate which I use the name olivieri, Audouin, after 

 elimination of the two other lizards originally confounded witli it 

 by Audonin, and which are alreadj' provided with names. 



The principal differences from the typical form reside in the 

 lepidosis of the lower eyelid, which is usually formed of a number 

 (5 to 7) of opaque or feebly transparent enlarged scales, not edged 

 with black, which replace the transparent disc of the true E. guttulata, 

 and in the more obtuse and usually shorter snout,* the basal width of 



* Well shown by the comparative outline fignres in A. Smith's lUustratiojis, 



