Sccqilira. 355 



forming sutures with each other ; the first exceptionally* broken up 

 into several small shields and granules, usually large and in contact 

 with the frontal and with the first superciliary, sometimes separated 

 from the former by one or two small shields ; 6 to 8 superciliaries, 

 first largest ; a series of granules between the superciliaries and the 

 second and third supraoculars, or 1 in front and 2 or 3 behind. 

 Rostral 1% to If times as broad as deep; lower nasal broadly in 

 contact with the rostral, resting on the first or first and second vipper 

 labials ; anterior loreal as long as deep or longer than deep, shorter 

 than the second ; subocular strongly keeled below the eye, resting on 

 the 4th to 6th, 5th to 7th, 6th to 9th, or 5tli to 8tli upper labials, 

 forming a very obtuse angle between the 6th and 7th, more rarely 5th 

 and 6th, 7th and 8th, or 8th and 9th, its antero-inferior border niueh 

 longer than the postero- inferior. A large, keeled upper temporal, 

 sometimes divided into 2 or 3 ; temporal scales granular, smooth ; a 

 small tympanic shield ; 2 to 5 rouuded or pointed projecting lol)ules 

 in front of the ear. 



5 pairs of chin-shields, the 2 or 3 anterior in contact in the middle ; 

 31 to 43 gular scales in a straight line between the symphysis of the 

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

 curved, with 7 to 12 rather small and irregular plates. 



Scales all granular and smooth, or posterior dorsals obtusely keeled 

 and rhomboidal, 60 to 75 across the middle of the body. Ventral 

 plates as long as broad or a little broader than long in 12 or 14t 

 straight longitudinal and 29 to 37 transverse series. Preanal region 

 covered with small irregular plates, or with two median feebly enlarged. 



Scales on upper surface of arm large, rounded, smooth. Upper 

 surface of tibia with granular or feebly keeled scales as large as or a 

 little larger than dorsals ; lower surface with one series of large and 

 one or two of small plates. Digits as in the preceding species ; 22 to 

 30 lamellae under the fourth toe, usually 23 to 28. 



Upper caudal scales oblique, more or less strongly and diagonally 

 keeled, truncate behind, lower smooth, at least on the base of the tail; 

 24 to 32 scales in the fourth or fifth whorl beliind the postanal 

 granules. 



Young Avith markings very similar to those of S. hnoxii, i. e. with 

 five light longitudinal streaks, the median bifurcate on the nape, 

 separated by black streaks spotted with white or by series of black, 

 more or less ring-like spots ; tail lemon-yellow. 



The light streaks usually disappear completely iu the adults, which 



* Male from Naroep. 



t Exceptionally 16, according to Werner, 



