338 Lacertidx. 



UKiuth l)et\veeii the 5th ami 6tli upper labials. 2 or 3 small upper 

 temporal shields sometimes present; temporal scales granular, smooth, 

 lower much larger ; a tympanic shield usually present ; no auricular 

 deuticulatiou. Lower eyelid opaque, Avith feebly enlarged scales in 

 the middle. 5, rarely 4, pairs of chin-shields, exceptionally 4 on one 

 side and 5 on (he other, the three anterior in contact in the middle; 

 17 to 29 gnlar scales in a straight line between the symphysis of the 

 chin-shields and the median collar-plate ; gidar fold distinct. Collar 

 feebly curved, free, composed of 7 to 12 rather large plates. 



Scales granular and smooth, larger, flat and often s(iuarish on the 

 sides towards the ventrals, 4(3 to 62 across the middle of the body, 

 usually 49 to 61. Ventral plates not forming regular h)ngitudinal 

 series, tesselUited, mostly as long as broad, some broader than long, 

 iu 28 to 33 more or less angular transverse series, the longest of which 

 contain 12 or 14 plates, usually 14. Preaual region covered with 

 numerous small, irregular plates. 



Upper surface of arm with rather large, smooth, hexagonal or 

 rhombic scales. Scales on upper surface of til)ia similar to dorsals 

 or a litde .smaller; lower surface wi(h one row of very large and one 

 of small plates. 8 to 12 femoral pores on each side, the two series 

 Avidely separated from each o(her in the middle. Subdigital lamellse 

 19 to 24 under the fourth toe, unicarinate, a second keel being formed 

 by the outer lateral series of scales. 



Upper caudal scales more or le.^s obliipie and diagonally keeled, 

 the scales small in the middle on the basal part, the scales on tlie 

 lower surface of which a,re smooth; 26 lo 46 scales in the fourth 

 or fifth whorl Itehind the postanal granules. 



The young are grey or olive above, wi( h ;; or 4 white, black-edged 

 streaks on each side of the neck, the uppermost from the superciliary 

 edge, the second from the lower eyelid, passing above the tympanum, 

 the third from (he ui)per lip, through the tympanum, the fourth, 

 if present, from (he lower lip to the forearm ; in addition, two dorsal 

 series of round white, black-edged ocelli. On the body the upper 

 or dorsolateral streak as well as (he tliiril may be broken up iii(o 

 ocellar spots, whilst the second is always represented l)y a series 

 of ocelli similar to the dorsals. These markings mav })ersist iu the 

 adult, or the streaks may disappear and Ix; replaced by (i or 8, 

 I'arely lO, series of spots, which may be incouipletely sun'oiuided by 

 dark brown rings, or transversely connei'ted by large dark browu 



received by the Genoa Museum, both agreeing in this respect. I have also 

 examined in tlie Pari.s Museum an ocollated yoiuig from Mongolia (David 

 Collection) in which tlio subucular borders the mouth. 



