broader than loii^* ; prefrontals nearly as loui;- as broad, foriuiuL;- a 

 median suture ; frontal shorter than its distance from the end of the 

 snout, 14 to 2 times as loni^ as broad, in contact with the large supra- 

 oculars or separated from them by a series of granular scales ; parietals 

 as long as broad or slightly broader than long ; interparietal smaller 

 than the frontoparietals ; no occipital. Two large supraoculars, 

 followed by a small band-like shield, the first as long as the second 

 and longer than the space, filled with small scales, between it and the 

 second loreal ; usually 4 to 7 superciliaries, first longest ; a series of 

 granules between the supraoculars and the superciliaries. Eostral as 

 deep as broad or slightly broader than deep, narrower beneath than 

 above ; three nasals, the lower in contact with or separated from the 

 rostral, resting on the 2 or 3 first upper labials ; first loreal as long 

 as deep or a little deeper than long, shorter than the second ; subocular 

 keeled below the eye and largely bordering the mouth between the 

 6th and 7th, rarely .5th and 6th or 7tli and 8th upper labials. Tem- 

 poral scales granular, smooth ; tympanic shield usually present ; no 

 auricular denticulation. Lower eyelid semi-transparent in the middle, 

 covered with small scales. 



5 pairs of chin-shields, the 3 anterior in contact in the middle ; 

 21 to 29 gular scales in a straight line between the symphysis of the 

 chin-shields and the median collar- jjlate ; no gular fold. Collar straight 

 or feebly curved, without enlarged plates, or with only a few, often 

 disposed irregularly ; 11 to 19 scales or plates on its border. 



Scales granular, smooth, 45 to 55 across the middle of the bod v. 

 Ventral plates as long as broad or longer than broad, in 14 or 16 

 oblique longitudinal and 32 to 36 transverse series. Preanal region 

 covered with small irregular plates, sometimes with an enlarged median 

 plate posteriori)'. 



Upper surface of arm with smooth roundish-hexagonal scales which 

 are larger than the gulars. Scales on upper surface of tibia similar to 

 the dorsals ; lower surface with one row of very large and one of small 

 plates. 16 to 19 femoral pores on each side, the space between the two 

 series ^ to i the length of each of them. Subdigital lamellae in two 

 I'ows, uni- or tricarinate, 28 to 30 under the fourth toe. 



Upper caudal scales oblique, truncate or obtusely pointed, and 

 diagonally keeled, lower, at the base, smooth ; 26 to 36 scales in the 

 fourth or fifth whorl behind the postanal granules. 



Pale grey or buff above, with 9 dark streaks, as wide as the inter- 

 spaces, or 11 streaks oa the nape, 10 on the middle of the body, and 

 7 on the posterior part of the body. Tail bluish towards the end. 

 * Frontonasal longitudinally divided in one of the type specimens. 



