138 AGAMIES. 



Upper head-scales imbricate, keeled, considerably enlarged on 

 supraorbital region ; a long spine surrounded by small ones behind 

 the supraciliary edge, and two others on each side between the 

 tympanum and the nuchal crest ; the posterior spine smallest, and 

 situated just above the tympanum, which measures half the dia- 

 meter of the orbit. Gular pouch not developed ; gular scales keeled, 

 as large as ventrals or a little larger. A very strong oblique curved 

 fold in front of the shoulder. Nuchal crest composed of long 

 lanceolate spines, soon decreasing in size, the dorsal crest being 

 reduced to a feebly serrated ridge. 51 to 55 scales round the 

 niddle of the body ; dorsal scales keeled, all directed upwards and 

 backwards ; ventral scales smaller than dorsals, strongly keeled. 

 The adpressed hind limb reaches the eye ; third and fourth fingers 

 nearly equal. Tail slightly compressed. Light brownish olive 

 above, with transverse dark-brown bands on the back, which are 

 interrupted by a more or less strongly defined light lateral band ; 

 black lines radiating from the eye ; the fold in front of the arm 

 black. 



Prom snout to vent 3'5 inches ; tail 9'5. 



Hab. Khasi'and Kakhyen Hills, Pegu, Tenasserim, Mergui. 



149. Calotes inystaceus. 



Calotes mystaceus, Dum. fy Bibr. Erp. Gen. iv, p. 408 ; Myth, 

 J. A. S. B. xxi, 1852, p. 354 ; id. Kelaart, Prodr., App. p. 47 ; 

 Giinth. Kept. 11. I. p. 141; Theob. Cat. p. 306; Bouleng. Cat. Liz. 

 \, p. 325. 



? Calotes gigas, Myth, J. A. S. B. xxii, 1853, p. 648. 



Upper head-scales smooth or feebly keeled, imbricate, scarcely 

 enlarged on supraorbital region ; a few small spines on each side 

 of the head above the tympanum ; latter measuring at least half 

 the diameter of the orbit. Gular sac small ; gular scales feebly 

 keeled, as large as dorsals. An oblique fold in front of the shoulder. 

 Dorso-nuchal crest well developed in the male, composed of falciform 

 spines directed backwards, the longest measuring the diameter 

 of the orbit ; it gradually decreases in height on the back, being 

 reduced to a mere denticulation on the sacrum. 45-53 scales 

 round the middle of the body ; dorsal scales keeled, nearly twice 

 as large as ventrals, all directed upwards and backwards ; ventral 

 scales strongly keeled. The adpressed hind limb reaches the tym- 

 panum or the posterior border of the orbit ; fourth finger slightly 

 longer than the third. Tail a little compressed, at the base with 

 a slightly serrated upper ridge. Olive above, frequently with large 

 transverse red spots on the back ; lips yellowish. 



From snout to vent 5 inches ; tail 10. 



Hab. Burma generally, Siam, Nicobars, Ceylon. 



150. Calotes grandisquamis. 



Calotes grandisquamis, Giinth. P. Z. S. 1875, p. 226, pi. xxx ; Bou- 

 leng. Cat. Liz. i, p. 325. 



