412 ME. G. A. BOULENGEE ON THE VAEIETIES OF 



in contact with the upper postocular 1 ; occipital usually broader and as long as or 

 longer than the interparietal, sometimes fused with it; supratemporal sometimes large, 

 sometimes broken up into scales ; temporal scales granular, not much larger than dorsals; 

 tympanic shield present ; masseteric shield moderately large, or small 2 , or absent ; four 

 or five, rarely six, upper labials anterior to the subocular 3 . 



Collar with even edge, with the plates usually small, 7 to 13 in number; 26 to 39 

 scales and granules in a longitudinal series between the symphysis of the chin-shields 

 and the median collar-plate ; gular fold usually distinct. 



Dorsal scales smooth, granular and feebly convex, roundish-hexagonal and flat on the 

 posterior part of the back, a little larger on the back than on the flanks ; 62 to 78 scales 

 across the middle of the body ; 4 and 5 transverse series (rarely 4 or 3 and 4) correspond 

 to one ventral plate, 30 to 56 to the length of the head. Ventral plates in 6 

 longitudinal and 24 to 28 transverse series. Praeanal plate rather large, with a single 

 semicircle of small plates, rarely with two. 



Scales on upper surface of tibia minute, smaller than dorsals, likewise smooth ; 

 19 to 26 femoral pores on each side ; 26 to 31 lamellar scales under the fourth toe. 



Caudal scales longer and shorter in alternate whorls, the upper feebly keeled, 

 sometimes even nearly smooth, truncate behind ; 28 to 40 scales in the fourth or fifth 

 whorl behind the postanal granules. 



Greyish, yellowish brown, or dull green above (PL XXIII. fig. 5), sometimes bright 

 green according to L. Miiller, with a more or less developed wide-meshed brown or 

 blackish network, or blackish with round pale olive spots ; small blue spots may be 

 present on the sides: this form has lost all trace of striation, even in the young . 

 Upper surface of head more or less spotted or vermiculate with black. Lower parts 

 greyish or greenish white, salmon-pink, or copper-red, with or without small black 

 spots ; a series of green or blue spots on the outer row of ventral shields. Markings 

 on the tail absent or ill defined in the adults (PL XXIX. fig. 7). 



Measurements (in millimetres) : — j. $. 



From end of snout to vent 73 70 



„ ,, „ fore limb 30 27 



Length of head 20 17 



Width of head 13 12 



Depth of head 9 8 



Fore limb 27 25 



Hind limb 42 37 



Foot 21 19 



Tail 137 112 



1 Out of 21 specimens examined, the postocular is in contact with the parietal in eight specimens, while 

 it is so on one side only in a ninth. 



2 In seven specimens. 



3 Five on each side in five specimens, 4 on each side in three, 6 on each side in one, -1 on one side and 5 on 

 the other in twelve. 



