34 



Nils Rosén 



ween the orbit or separated by one series of small s('ales. Supraocular disk in 

 contact with the supraorbital semicircles, about six scales larger; all disk-scales 

 keeled. Occipital rather small, not as large as the ear-opening, in a large patch 

 of small, keeled scales, which separate it from the supraorbitals. Canthus rostralis 

 very sharp, with three large scales. Loreal scales in four or five rows, small, 

 oblong, keeled, those in contact with the superior labials larger. Superciliary ridge 

 consisting of three large, narrow, keeled scales, in front in continuation with canthus 

 rostralis, behind followed by very small keeled scales. Granules on the eyelid 

 small, except a series along the edge, which are quadrangular. Nostril in a rounded 

 nasal scale, which is in contact with the first superior labials, separated by an oblong- 

 triangular scale from the rostral. Five or six rows of keeled scales between the 

 nasals. Rostral \erj broad, much broader than deep, without a median suture. 

 Infraorbital semicircle with three scales, which are rather long and nairow, keeled: 

 two of them are biearinated and in contact with the superior labials. Six or seven 

 large, keeled superior labials, followed by small keeled scales or granules on the 

 temporals. Mental plates large. Seven inferior labials, oblong, smooth. Below 

 them about three rows of keeled scales. A large smooth plate before these scale 

 rows and the mental and first inferior labial. Ear-opening moderate, oval. Gular 

 appendage with feebly keeled scales. The appendage is small in younger specimens, 

 very large in older ones. Dorsal scales small, keeled, larger on the median line, 

 more granular on the sides. Ventral scales larger, imbricate, strongly keeled, the 

 keels forming parallel lines. Body slightly compressed. No nucho dorsal fold in 

 younger specimens, a feeble one in older ones. Scales on anterior part of forelimb 

 enlarged, keeled. The adpressed fore-limb reaches almost the base of the hind limb 

 The anterior scales of hind-limb enlarged, keeled. The adpressed hind-limb reaches 

 the eye. The fingers with three-carinated scales on the upper side, one- carinated 

 ones on the side and smooth lamelliform ones on the under side. About 20 lamellae 

 under II. and III. phalanges of fourth toe. Toes with three-keeled scales on upper 

 side. Tail compressed, with serrated upper edge, very strongly compressed in large 

 specimens. Small scales at base of tail, other scales strongly keeled. 



As to tlie colour, there is a very great difference between the larger and 

 smaller specimens. The smaller ones (Fig. 10 and 11), measuring about 40 mm. 

 or less from snout to vent, have the flanks greyish brown. On each side a black 

 or (lark brown band, towards the median line very often bordered by white or 

 yellowish red. These bands have their medial borders either straight or with tri- 

 angular processes, which sometimes are united on the dorsal median line with those 

 on the other side. The back between these two longitudinal bands is grey-brown, 

 with a narrow yellowish brown or almost white band along the median line, not 

 always quite distinct. The lateral bands continue forwards, then always with 

 straight medial borders, to below the eye. The markings on the body continue, 

 more or less distinctly, on the tail. Belly light with dark dots. Gular appendage 

 yellowish red. The colour may change to ligther or darker, the markings becoming 



