I04 



few scattered enlarged ones; ventral scales larger than dorsals, 

 smooth. Tail compressed, with a serrated edge and covered 

 with smooth or feebly keeled scales, the inferior largest and 

 strongly keeled ; its length more than twice that of head and 

 body. Limbs long, the hind limb reaches the tip of the snout 

 or beyond, covered with unequal slightly keeled scales; fourth 

 finger a little longer than third. 



Olive or brown above, uniform or with dark transverse 

 bands. Limbs banded with dark brown; tail with black and 

 light annuli. Lower parts brownish ; gular fold black ; gular 

 sac black-spotted, the spots arranged in oblique series, or 

 entirely black. Length of head and body 141 mm.; tail 315 mm. 



Habitat: Sumatra (Battak Highlands 1000 M., Taluk!, 

 Indragiri); Borneo (Mt. Poch, Rock Road, Matang, Kuching, 

 Santubong, Samarahan, Sambas Damus 1200 M. !). 



6. Gonyocephalus herveyi Boulenger. 



Gonyocephalus herveyi^ Boulenger, Cat. Liz. Ill 1887, p. 493. 



Snout a little longer than the diameter of the orbit; supra- 

 ciliary border normal ; tympanum smaller than the eye-opening. 

 Head-scales small, unequal, keeled; some enlarged tubercles 

 above and below the tympanum ; ten to twelve upper and 

 ten lower labials. Gular sac moderate, covered with smooth 

 scales. Body compressed; nuchal and dorsal crests continuous, 

 composed of long, narrow lobes, the highest, on the nape, 

 longer than the snout; those of the back decreasing in size, 

 covered at the base with smooth scales. Dorsal scales small, 

 smooth, with the points directed upwards; some enlarged 

 scales on the flanks ; ventral scales larger, smooth or with a 

 faint keel. Tail compressed, a serrated upper edge at the base, 

 more than twice the length of head and body. Limbs with 

 large, very faintly keeled scales, the hind limb reaches the tip 

 of the snout; fourth finger a little longer than third. 



Olive or brown above ; occiput and nape sometimes vermi- 

 culated with black ; the enlarged tubercles on the sides usually 

 whitish; tail with dark annuli. Lower parts whitish, the gular 

 fold black. Females and young ones with dark transverse bands 

 on body and limbs; young ones with dark longitudinal lines on 

 the throat. Length of head and body 145 mm.; tail 310 mm. 



Type-specimen examined in the British Museum. 



