350 Lacertldie. 



A. Toes not or but feclily deprfssiHl, iiuiderately serrated, 



the imgiuil lamella without or with rather narrow 

 lateral expansion ; ventral phites in 28 to 3-i trans- 

 verse series, 12 to IG femoral pores on each side ; 

 siibocular bordering the moiitli. 

 Lower nasal in contact with or narrowly separated from the 

 rostral ; 19 to 22 lamellse under the fourth toe ; vin>;iial 

 lamella Avithout lateral expansion ; scales on njiper surface 

 of arm larger than largest gulars ; caudal scales large, 19 to 

 21 in the 4.1h or 5th whorl .... .S. liiuulata, Nik., p. 363. 

 Lower nasal separated from tlie rostral ; 21 to 30 lamellse 

 under the fourth toe; ungual himella with narrow wing- 

 like expansion ; scales on uj^per surface of arm not larger 

 than largest gulars ; caudal scales small, 26 to 30 in the 

 •ith or uth whorl <S'. srripla, Strauch, p. 365. 



B. Toes depressed, smooth interiorly, rather feebly serrated 



laterally ; ventral plates in 29 or 30 transverse series, 

 16 to 18 in the longest ; 13 to 16 femoral pores on each 

 side ; subocular not reaching the mouth S. iranscaspica ,'Nik.,-p. 368. 



C. Toes depressed, smooth or faintly keeled inferiorly, 



strongly fringed laterally, the ungual lamella with 

 strong wing-like lateral expansion ; ventral plates in 

 35 to 42 transverse series, 20 to 24 in the longest 

 series ; 15 to 19 femoral pores on each side ; subocular 

 not reaching the mouth. 

 3 large supraoculars, forming sutures \vith each other ; frontal 

 as long as its distance from the end of the snout ; parietals 

 meeting in the middle ; a large preanal plate S. acutirostris, Blgr., p. 368. 

 2 large supraoculars, preceded by a series of granules separating 

 them from a small anterior shield ; frontal as long as its 

 distance from the end of the snout ; parietals meeting in the 

 middle : no enlarged preanal .... S. ijcrsica, Nik, p. 370. 

 2 large supraocidars, preceded by small shields and granules ; 

 frontal as long as its distance from the nasals ; parietals 

 often separated by small shields or granules behind the 

 interparietal ; no enlarged preanal . . S. grammica, Licht, p. 371. 



1. SCAPTIKA KNOXII. 



Lacerta knoxii, M.-Edw. Aim. Sc. Nat. xvi, 1&2'.), pp. 7G, 85, pi. vi, 

 fig. (:'.. 



Meroles huoxii. Gray, Ami. N. H. i, 1838, p. 282. 



Eremias hwxii, Dum. iV: Bibr. Erp. Geii. v, p. 2i'9 (1839) ; A. Smith, 

 111. Zool. S. Afr., Kept. pi. xliii, tig. 1, and pi. xlviii, fig. 1 (1845). 



Eremias Icnoxii, part., Grray, Cat. Liz. p. 40 (1845). 



.'' Acanfhodactijlus nilijlierrensh, Jerdou, Jouru. As. Sue. Beiig. xxi, 

 1853, p. 476, ami Proc. As. Sue. Beiig. 1870, p. 70. 



Ertinias fordii, Giiiitli. Ann. & Mag. N. H. (4) ix, 1872, p. 331. 



