206 Lacerfidie. 



also divided iuto 2 or 3 and ofteu separated from the frontoparietals ; 

 the two principal supraoculars not or but slightly broader tkau the 

 posterior part of the frontal ; 3 superciliaries, rarely 4, second very 

 long ; a complete series of granules between the supraoculars and the 

 superciliaries, exceptionally two. A single nasal, in contact with the 

 first upper labial, followed by 2 superposed postnasals ; anterior loreal 

 shorter than the second ; 4 upper laicals* anterior to the subocular, 

 which is much narrower beneath than above and borders the mouth. 

 2 large, keeled upper temporals, anterior the longer and usually in 

 contact with the fourth supraocular ; temporal scales moderately large, 

 hexagonal, keeled ; a rather large tympanic shield. 



5 or 6 pairs of chin-shields, the two or three anterior iu contact in 

 the middle ; gular scales large, flat, imbricate, 15 to 20 in a straight 

 line between the symphysis of the chin-shields and the ventral plates ; 

 no gular fold ; collar indistinct in the middle, free and with 2 or 3 large 

 plates on tlie side. 



Scales large, rhombic and imbricate from the nape, generally in- 

 creasing iu size to the tail, with strong keels, straight or slightly 

 oblic^ue, a few on the nape sometimes bicarinate ; lateral scales as 

 large as or a little smaller than the dorsals, passing gradually into the 

 ventral plates, which ai"e in 6 or 8 longitudinal and 24 to 29 transverse 

 series (24 to 27 in males, 29 in females) ; 26 to 32 scales and plates 

 round the middle of the body. A large preanal plate, bordered by one 

 or two semicircles of smaller plates, or two large preanal plates, one in 

 front of the other. 



Scales on upper surface of tibia rhombic and keeled, as large as or 

 a little smaller than the dorsals. 8 to 13 femoral pores on each side, 

 usually 9 to 11. Subdigital lamellae bi- or tricarinate, 16 to 19 under 

 the fourth toe. 



Caudal scales strongly keeled, upper larger than lower, 16 to 20 in 

 the fourth or fifth whorl behind the postanal grasiules. 



Brown above, with two yellowish white streaks on each side, the 

 upper, which is exceptionally absent,t from the superciliary edge to 

 the tail, the lower, better defined and often black-edged, from the 

 upper lip, through the tympanum, to the base of the hind limb; the 

 space between the two light streaks darker than the back, or closely 

 spotted with black ; sides of belly sometimes black, with blue sjjots ; 

 tail more or less reddish ; lower parts white. 



* 5 on one side in a female from the Brumagherries. 



t Contrary to the tendency in the other species of the genus, which is for 

 the lower lateral streak to disappear before the upper. 



