350 Lacertidx. 



A. Toes not or Init fuebly depressed, iiunlerately serrated, 



the ungual lamella without or with rather narrow 

 lateral expansion; ventral plates in L'M to HI trans- 

 verse sei'ies, 12 to 10 femoral pores on eueh side; 

 subocular bordering tlie mouth. 

 Lower nasal in contact with or narrowly separated from the 

 rostral; 19 to 22 lamella; under the fourth toe; ungual 

 lamella witliout lateral exijausinn ; scales ou U2)per surface 

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

 21 in tlie -Ith or oth whorl .... ,S. litifolato, ^i\:.,-p. 3GS. 



Lower nasal separated from the rostral ; 2i to 30 lamellae 

 iiuder the fourth toe; ungual lamella with narrow wing- 

 like expansion ; scales on upper s\U'face of arm not larger 

 than largest gulars ; caudal scales small, 2(! to .'if! in the 

 •ith or oth whorl ..... S. siripla, Strauch, p. .3(55. 



B. Toes dejiressed, smooth interiorly, ratlier 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 6'. transcasfico, Nik., p. 36S. 



C. Toes dejiresscd, smooth or faintly keeled inferiorly, 



strongly fringed laterally, tlie ungual lamella with 

 strong wing-like lateral expansion ; ventral plates in 

 35 to '12 transverse series, 20 to 21 in the longest 

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

 not reaching the mouth. 

 3 large supraoculars, forming sutui-es with 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. 3(iM. 

 2 large supraoculars, iireceded 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. jitrsiot, iS'ik, p. 370. 

 2 large supraoculars, 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. (/rammica, Licht, p. 371. 



1. SCAPTIKA KNOXII. 



Lact-rlu kiiixcii, M.-Edw. Aim. Se. Nat. .\vi, 18-2',1, pp. 7G, 85, pi. vi, 

 fig. ti. 



Meroles kiiu.vii, Gray, Auu. N. H. i, 1838, p. 282. 



Eremias kiioxii, Dam. & Bibr. Erp. Geu. v, p. 2'l!) (1839) ; A. Smith, 

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



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



! Acanthodacti/ius nibjherrenns, Jerdou, Jourii. As. Sue. Buug. x.\i, 

 1853, p. 47(5, aud Proc. As. Soc. Beug. 1870, p. 79. 



Eremias fordii, Giiuth. Auu. & Mag. N. H. (4) ix, 1872, p. 331. 



