8ca2'>fira. 369 



Head and body strongly depressed. Head H times as long as broad, 

 its length 3^ times in length to vent, its depth equal to the distance 

 between the centre of the eye and the tympanum ; snout acutely 

 pointed, Avith the nasals slightly swollen, as long as the postocular 

 part of the head ; canthus rostralis rather obtuse, loreal region nearly 

 vertical and feebly concave. Pileus 1^ times as long as broad. Neck 

 a little narrower than the head. Hind limb reaching the posterior 

 border of the orbit ; foot 1 3 times as long as the head ; digits flattened. 



Upper head-shields smooth ; nasals in contact behind the rostral, 

 the suture between them h the length of the frontonasal, which is 

 broader than long ; prefrontals a little broader than long, forming a 

 median suture ; frontal nearly as long as its distance from the end of 

 the snout, twice as long as broad, narrow behind, grooved in front ; 

 parietals much broader than long ; interparietal a little smaller than 

 the frontoparietals ; no occipital. Three large supraoculars, forming 

 sutures with each other, first in contact with the first superciliary, the 

 second loreal, the prefrontal, and the frontal ; two or three minute 

 granules between the first and second supraoculars ; a small band-like 

 fourth supraocular, separated from the third by granules ; second and 

 third supraoculars separated from the frontal and from the super- 

 ciliaries by a series of granules ; 7 superciliaries, first longest. Rostral 

 as deep as broad, narrower beneath than above ; lower nasal not 

 reaching the rostral, resting on the three anterior upper labials ; 

 anterior loreal a little longer than deep, shorter than the second ; 

 subocular strongly keeled below the eye, resting on the 5th to 7th 

 upper labials. Temporal scales granular, smooth ; no tympanic shield ; 

 no auricular denticulation. 



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

 24 gular scales on a line between the symphysis of the chin-shields 

 and the median collar-plate ; no gular fold. Collar straight, 8 of the 

 marginal scales feebly enlarged. 



Scales granular, smooth, 80 across the middle of the body. Ventral 

 plates as long as broad or longer than broad, in oblique longitudinal 

 series ; 35 transverse series, the longest of which contain 20 plates. 

 A large preanal plate, about twice as broad as long. 



Upper surface of arm with rounded smooth scales, a little larger 

 than the gulars. Upper surface of tibia covered with granular 

 scales similar to the dorsals ; lower surface with one row of large and 

 one of small plates. 15 or 17 femoral pores on each side. Fingers 

 and toes with 4 series of scales, strongly fringed on both sides ; sub- 

 digital lamellse smooth or indistinctly keeled, 20 under the fourth toe ; 

 ungual lamella with wing-like lateral expansion. 



TOL. II. 24 



