362 Lacerfhlv. 



5 or G pairs of cbin-sliields, the 3 first meeting iu the iiiidclle*; 

 36 to 51 gular scales iu a straight line between the symphysis of the 

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

 straight, with 12 to IG small plates. 



Scales granular and smooth, increasing iu size on tlie lower part of 

 the side and passing gradually iuto the veutrals, 90 to 110 across the 

 middle of the body. Ventral plates as long as broad or longer than 

 broad, tessellated or forming oblique longitudinal series, in 40 to 46 

 transverse series, the longest of which contains 24 to 28 plates.f 

 Preanal region covered with small irregular plates. 



Upper surface of fore limb with rather large, rhombic, keeled scales. 

 Upper surface of tibia with rhombic keeled scales anteriorly, graduating 

 into small smooth granules further back ; lower surface with one row 

 of transversely enlarged plates and 3 rows of smaller plates. 19 to 

 23 femoral pores J on each side, the two series narrowly separated in 

 the middle. Fingers with 4 series of scales, symmetrically and rather 

 strongly serrated on both sides, feebly unicariuate beneath ; loes with 

 3 series of scales, the outer forming a rather strong fringe, the sul)- 

 digital lamellae strongly keeled § and 22 to 24 iu number under the 

 fourtli toe. 



Upper caudal scales rhombic, rather strongly and diagonally keeled, 

 lower, on the base of the tail, smooth or very obtusely keeled ; a band 

 of granules, continued from the back, along the middle of the base of 

 the tail ; 40 to 50 scales iu the fourth or fifth whorl behind the post- 

 anal granules. 



Greyish or sand-colour above, with a darker network enclosing 

 round light spots ; sometimes a rather indistinct dark vertebral 

 streak ; tail with 3 blackish longitudinal streaks in the basal third. 

 A female specimen in the Paris Museum is dotted with blackish 

 above ; a broad dark lateral band, spotted with whitish and edged 

 above and beneath by a narrow whitish streak. The young is 

 described by Werner as closely dotted with dark anil light above ; 

 upper lip and lower surface of tail orange-red. Lower jjarts wliite. 



* 2 on one side and 3 on the other in one specimen. 



t 20 to 28 according to Werner. 



:!: 16 to 24 according to Werner. 



§ In describing the snbdigital lamella; of the toes as smooth, Sti-anch has 

 evidently made a mistake in their orientation, taking the median keel and the 

 serration formed by it to represent the outer border of the toe. I am inclined 

 to think that the flattened toes of S. grammica are due to a rotation of tlie axis 

 of the digit, owing to which the outer half has come to represent the whole 

 lower surface. 



