io6 

 8. Gonyocephalus borneensis (Schleg.). 



Lophyrus bornensis, Schlegel, Bijdr. tot de Dierk. I 1848, p. 6, pi. Ill fig. 2. 

 Gonyocephalus borneensis, Boulenger, Cat. Liz. I 1885, p. 288. 



Snout longer than the diameter of the orbit ; canthus rostralis 

 sharp; supraciliary borders normally raised ; tympanum distinct, 

 nearly half the diameter of the eye-opening. Head-scales small, 

 keeled, those on the supraorbital region larger and strongly 

 keeled ; on the forehead a series of larger scales A-shaped ; 

 above and below the ear some enlarged tubercles; nine to 

 twelve upper and lower labials. A gular sac, without serrated 

 anterior edge, covered with obtusely keeled, small scales. Body 

 compressed ; nuchal and dorsal crests continuous, beginning at 

 the posterior border of the occiput; the nuchal and anterior 

 dorsal part formed of long, narrow scales, covered at the base 

 with smaller, sharply pointed and keeled scales, its greatest 

 height, at the nape, equals the length of the snout. Dorsal 

 scales very small, keeled, with a few enlarged ones here and 

 there; ventral scales much larger, keeled. Tail compressed, a 

 serrated edge above, covered with keeled scales, those below 

 larger and strongly keeled; its length about twice the length 

 of head and body. Limbs long and slender, the hind limb 

 nearly reaches the tip of the snout; scales of limbs slightly 

 unequal and keeled ; third and fourth fingers almost equal. 



Light brown above, reticulated with dark brown, and with 

 dark transverse bands on the back and limbs, the large scales 

 whitish; the light brown colour slightly tinged with bluish; 

 dark lines radiating from the eye; a light black-edged trans- 

 verse band at the supraorbital region; gular sac in males 

 bluish, with an orange streak on each side; gular fold black; 

 tail with broad dark and narrow light annuli. Lower parts 

 yellowish; throat with dark brown longitudinal lines. Length 

 of head and body 130 mm.; tail 275 mm. 



Habitat: Sumatra (Deli); Borneo (Kidi district, Sarawak, 

 Sandakan Bay!, Samarinda!). Malacca. 



9. Gonyocephalus miotympanum (Gthr.). 



Tiaris miotympanum, Gunther, Proc. Zool. Soc. London 1872, p. 592, pi. XXXVII 



fig. B. 

 Gonyocephalus miotympanum, Boulenger, Cat. Liz. I 1885, p. 287. 



Snout as long as the diameter of the orbit ; canthus rostralis 



