62 Lacertuhe. 



espece qui n"ait pas c'te retrouvce depuis le coimneuceinent du sic-cle. 

 Les Acauthodactyles sout trop rcpaudus et trop abondauts dans les 

 regions qu'ils occupent, et ils vivent trop au grand jour, sur des 

 terrains arides et decouverts ou rien ne les derobe a I'oeil de 

 robservateur." Now, in 1885, wlieu Lataste wrote these lines, the 

 Reptilian fauna of Northern Egypt had been less thoroughly surveyed 

 than that of Northern Algeria. And yet, a lizard which agrees with 

 Savigny's tigure, and which, according to Doumergue, who first 

 described it as late as 1901, is readily recognizalile in the open, is 

 quite common near Orau, where Lataste himself had collected on two 

 occasions, and it nevertheless escaped the eye of such an expert. We 

 may therefore still entertain the hope that the true A. savignyi will 

 some day be found ou the north coast of Egypt. 



Doumergue says this species is common on sandy soil at Oran and 

 on the littoral, from Camerata to Mostaganem. It is also found 

 in the interior of the province of Orau, at Ain-Tedales, Sidi-Douma 

 and Daya. A specimen from the " Desert de I'Ouest " (Schousbor) is 

 preserved in the Paris Museum. 



A. savignyi is more nearly related to A. vulgaris, var. lineomaculatus, 

 than to any other form, and may be said to be connected with it to a 

 certain extent, differing principally in the stronger serration of the 

 outer side of the fourth toe. It is noteworthy that the presence of 

 one, two or three small shields between the prefrontals, which is 

 frequent in A. vulgaris, var. lineomaculatus, and appears only as a 

 rare individual anomaly in the other forms of the genus, has become a 

 constant character in A. mvignyl. 



5. ACANTHODACTYLUS PAKDALIS. 



Lacerta jjardalis, Lichtenst. Verz. Doubl. Mus. Berl. p. 99 (1823) ; 

 Hempr. & Ehrenb. Symb. Phys., ZooL, Amph. pi. ii, fig. 2 (1899). 



Lacerta cleserti (non Lepcch.), M.-Edw. Ann. Sc. Nat. xvi, 1829, 

 pp. 79, 86, pi. vi, fig. 8, and pi. viii, fig. 6 ; Strauch, Erp. Alg. p. 32 

 (1862). 



Sca^jteira maculata, Gray, Ann. N. H. i, 1838, p. 281. 



Acanthodactylus savignyi, part., Dum. & Bibr. Erp. Gen. v, p. 746 ; 

 Guichen. Explor. Sc. Alg., Rept. p. 14 (1850) ; Vaillaut, Miss. Rcvoil 

 Pays Comal., Rept. p. 19 (1882). 



AcantJiodactylus savignyi. Gray, Cat. Liz. p. 37 (1845) ; Lichtenst. 

 Nomencl. Rept. Mus. Berl. p. 15 (1856); Strauch. op. cit., p. 36; 

 Lataste, Ann. Mus. Genova (2) ii, 1885, p. 483. 



