Ereiiiiio!. 317 



times as king as broad, its leng-th 4 times in linii;tli lo vent; snout 

 rather long, very obtuse, with the nasals very feebly swollen, with a 

 median concavity above, extending along the frontal shield ; eanthus 

 rostralis sharp, loreal region grooved. Pileus twice as long as broad. 

 Neck as broad as the head. Hind limb e.\teuding a little beyond the 

 shoulder ; foot a little longer than the head. Tail nearly twice as 

 long as head and binly, tiatteued at the Ixise. sliglitly compressed 

 posteriorly. 



Upper head-shields smooth ; nasals in cmitact behind the I'ostral, 

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

 broader than long; jirefroutals longer than broad, forming a median 

 suture; frontal a little shorter than its distance from the end of the 

 snout, nearly twice as long as broad, | I'f its lateral border in contact 

 with the large supraocidars ; parietals scarcely longer than liroad ; 

 interparietal smaller than tlie fi'ontoparietals ; no occipital. Two 

 large supraoculars, followed by a small one, the space between the 

 iirst and the posterior loreal equal tt) the length of the former 

 and filled by 8 to 10 small scales ; a series of granules between 

 the supraoculars and the superciliaries. Rostral twice as broad 

 as deep ; three nasals, the lower extensively iu contact with tlie 

 rostral and resting on the two first upper labials and just touching 

 the third; anterior loreal nearly as long as deep, shorter than the 

 second; subocular bordering the mouth, between the 5th and 6th 

 or 6th and 7th upper labials ; temporal scales hexagonal, smooth ; 

 tympanic shield present ; no auricular deiiticulation. Lower evelid 

 opaque. 



5 pairs of ehin-chields, the o anterior in contact iu the middle. 

 20 gular scales in a straight line between the symphysis of the chin- 

 shields and the median collar-plate ; gular fold distinct. Collar 

 curved, free, strongly serrated, composed of 12 plates, 9 of which ai-e 

 large. 



Scales granular, flat, smootii, a little broader than long, smaller on 

 the upper part of the sides, 56 across the middle of the body. 

 Ventral plates mostly as long as broad, in 12 obli.jue longitudinal and 

 26 transverse series. A lather large preanal plate, surroiuided by 

 smaller plates. 



Upper surface of arm with small smooth scales. Scales on upper 

 surface of tibia similar to dorsals ; lower surface with a single row of 

 very large shields. 21 to 24 femoral pores on each side, the two 

 series ver^' narrowly separated in the middle. 



Upper caudal scales with strong diagonal keels, lower smooth on 

 the base of the tail. 



