126 



of the shoulder; gular scales keeled, smaller than ventrals. 

 Nuchal crest separated from dorsal, composed of large com- 

 pressed spines, their base hidden under two or three rows of 

 smaller spines, dorsal crest as high as or a little lower than 

 nuchal anteriorly, becoming lower behind, in females much 

 smaller. Dorsal scales small, their points directed upwards, 

 intermixed with large, rhomboidal keeled scales; ventral scales 

 keeled, larger than the enlarged dorsals. Tail compressed, 

 about one time and a half as long as head and body, covered 

 with uniform, strongly keeled scales, larger below. Limbs 

 covered with equal, keeled scales, femur with unequal ones; 

 fourth ringer slightly longer than third; hind limb, pressed 

 against the body, reaches between the temple and the nostril. 



Colour changeable, brown, blackish, green with lighter or 

 darker spots; dark lines radiating from the eye; sometimes 

 blue spots on body, limbs and tail; a dark band from the 

 interspace between the two crests to the throat. Lower parts 

 yellow, with orange on the chest, lilac on the gular region of 

 the male; inside of mouth orange. Length of head and body 

 135 mm.; tail 160 mm. 



Habitat: Sumatra (Indragiri, Palembang). Malacca; 

 Tenasserim; Siam; Cochin-China. 



This species feeds on worms, which it digs out with its 

 fore limbs. It can change its colour and is a rare form in the 

 Indo-Australian region. 



12. Chlamydosaurus Gray. 



(GRAY, in King's Voy. Austr. II, p. 424, 1826). 



Body compressed, covered with small keeled scales. Tym- 

 panum distinct. Neck with a large dermal expansion on each 

 side, fused on the throat. Tail slightly compressed. Praeanal 

 and femoral pores usually present '). 



Distribution. New Guinea; Australia. 



A single species. 



i. Chlamydosaurus kingi Gray. 



Chlamydosaurus kingii, Gray, King's Voyage Austr. II 1826, p. 425. 

 Chlamydosaurus kingii, Boulenger, Cat. Liz. I 1885, p. 401. 



Head small; snout pointed with sharp canthus rostralis, 



i) Beddard mentions a male specimen without femoral pores (Proc. Zool. Soc. 

 1904 II, p. 82). 



