260 Lacerfidn'. 



straight line bet ween the svinphysis of the ehiii-shields and the median 

 collar-plate ; gular fold more or less distinct. Collar curved or 

 angular, free or more or less attached, sometimes quite indistinct, in 

 the middle, composed of 8 to 14 plates, usually 10 to 12. 



Scales juxtaposed, granular, round or subrhomboidal, all smooth or, 

 rarely, very obtusely keeled towards the tail, larger towards the 

 ventral plates, 36 to 54 (usually 39 to 47) across the middle of the 

 body. Ventral plates in 10, rarely 8, regular longitudinal and 27 to 

 34 transverse series (27 to 31 in males, 29 to 34 in females), all except 

 the outer broader than long, the largest often twice as broad as long. 

 Preanal plate usually large and bordered by a single semicircle of 

 small plates in males, often small and with two or three semicircles of 

 smaller plates in females. 



Scales on upper surface of tibia rhombic and keeled, as large as or 

 a little larger than the dorsals ; one series of large and two of small 

 plates on lower surface. 9 to 16 femoral pores on each side, usually 

 10 to 14. Subdigital lamellfB bi- or tricarinate, 18 to 22 (rarely 23 

 or 24) under the fourth toe. 



Upper caudal scales oblique, truncate behind, strongly and diagonally 

 keeled, sometimes shortly mucronate behind, lower smooth ; 20 to 26 

 scales in the fourth or fifth whorl. 



Grey, greyish brown, or reddish brown above, uniform or with 

 scattered black dots, or with two dorsal series of black and white spots 

 (one half black and one half white) ; sometimes with numerous white, 

 black-edged ocelli and two white streaks on each side, the upper 

 dorsolateral, the lower lateral, from below the eye, through the 

 tympanum, to the groin. Tail sometimes with dark annuli or with 

 vertical bars on the sides. Lower parts white, the throat sometimes 

 dusky and the ventrals finely punctulated with dusky. 



Measurements (in millimetres) 



