Ereihias. 225 



Bei-1. Ac. 1869, p. 60 ; Lataste, Aim. Mu.s. Geuova (2) ii, 1885, p. 12(i ; 

 Bouleiig. Cat. Liz. iii, p. 80 (1887) ; Anders. Zool. Egypt, Eept. p. 109 

 (1898) ; Bedriaga, Wiss. Ees. Przewalsld Reise, Amph. Rept. (1909) ; 

 Bouleng. Jouru. Zool. Res. iii, 1918, p. 1. 



Eremias, part., Gray, Auu. N. H. i, 1838, p. 280 ; Dum. & Bihr. 

 Erp. Geu. V, p. 286 (1839) ; Gray, Cat. Liz. p. 39 (1845). 



Scax>teira, part., Gray, Ann. M. H. i, p. 281. 



Ida, part., Gray, I.e. 



Mesalina, Gray, I.e. and Cat. p. 42. 



Aspidorhhms, Eiclnv. Faun. Casp.-Caiie. p. 74 (1841). 



Pseuderemias, Boettg. Abb. Seuck. Ges. xiii, 1883, p. 118. 



Bonlengeria, Lataste, t.c. p. 116. 



LaiirprcremiaB, Txmeremias, Bouleng. .l^lunl. Znol. Res. t.c. p. 2. 



Head-shields normal, but occipital often rudimentary 

 or absent. Xostinl pierced between three or four nasals, 

 widel}' separated from the upper labials. C'ollar more or 

 less distinct. Dorsal scales small and juxtaposed or sul)- 

 imbricate ; ventral plates not or but feebly imbricate, 

 with straight posterior border, smooth. Digits sub- 

 cylindrical or compressed, with keeled lamellar scales 

 inferiorl}'. Femoral pores. Tail long, cylindrical or 

 feebly compressed posteriorly. 



South-Eastern Europe ; Western and Central Asia 

 eastward to Manchuria, Corea, Xorthern China and 

 Sind ; Africa. 



The parietal foramen is constantly present ; pterygoid teeth are 

 more frequently absent than present, and it does not seem possible 

 to make use of this character for the definition of species. 



There are usually three series of scales round the toes : an uppei', a 

 lower and a more or less complete outer; a keel, corresponding to the 

 middle of the base of the claw, as in the section Pseuderemias, may 

 be accompanied by one or two others on the outer side of it, as is the 

 case in most species ; or the three series of scales are one upper and 

 two lower, each of the latter with a keel, as in E. argus, in which case 

 the subdigital lamellae are described as in two rows ; or in addition to 

 these there may be one or two series of small lateral scales on the 

 outer side of the toe, which is thus surrounded by four or five series 



VOL. H. 15 



