F, -em lax. Ml 9 



broader thau long* ; prefrontals nearly as long as broad, forming a 

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

 snout, lif to 2 times as long as broad, iu contact with the large supra- 

 oculars or sepai'ated from them by a series of granular scales ; parietals 

 as long as broad or slightly broader than long ; interpai-ietal smaller 

 thau the frontoparietals ; no occipital. Two large supraoculars, 

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

 and longer thau 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 ; suboeular 

 keeled below the eye and largely bordering the mouth between the 

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

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

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

 covered with small scales. 



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

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

 chin-shields and the median collar-plate ; no gular fold, t'ollar straight 

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

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



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

 Ventral plates as long as broad or longer than broad, iu 14 or It! 

 oblique longitudinal and 32 to 36 transverse series. Preaual region 

 covered with small irregular plates, sometimes with an enlarged median 

 plate posteriorly. 



Upper surface of arm with smooth rouudish-he.xagonal 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 ou each side, the space between the two 

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

 rows, uni- or tricariuate, 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 on the nape, 10 on the middle of the body, aud 

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

 * Frontonasal longitudinally divided in one of the tyise specimens. 



