16. CALOTES. 325 



1 1 . Calotes mystaceus. 



Calotes mystaceus, Gray, Cut. p. 245. 

 Calotes mystaceus, Dttm. 6r Bih-. iv. p. 408 ; Blyth, in Kelaart, Prodr, 



Faun. Zeyl., App. p. 47 ; Gilnth. Itept. Brit. Ind. p, 141. 

 ? Calotes gigas, Blyth, Journ. As. Soc. Beng. 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. Forty-five to fifty-three 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 tympanum or the pos- 

 terior border of the orbit ; fourth finger slightly longer than 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. 



Total length 380 millim. 



Head 36 „ 



Width of head 25 „ 



Body 89 „ 



Fore limb 57 „ 



Hind limb 75 „ 



Tail 255 „ 



Arrakan ; Pegu ; Tenasserim ; Siam ; Nicobars ; Ceylon. 



a-c. S 2 . Pegu. W. Theobald, Esq. [P.]. 



d. (S ■ Birma. Lieut. R. C. Beavan [P.]. 



e. S. Camboja. M. Mouhot [0.1. 

 /. 5 . India. ' Prof. Oldham [P.j. 



12. Calotes grandisquamis. 

 Calotes grandisquamis, Giinth. Proc. Zool. Soc. 1875, p. 226, pi. xxx. 



Upper head-scales smooth or very feebly keeled, imbricate, enlarged 

 on supraorbital region ; three or four small spines above the tym- 

 panum ; latter measuring half the diameter of the orbit. A gular 

 pouch ; lateral gular scales larger than ventrals, smooth. A short 

 oblique fold in front of the shoulder. Dorso-nuchal crest formed of 

 large lanceolate spines, the longest of which (in the male) equals the 

 diameter of the orbit, gradually decreasing in height on the back ; 

 in the female the dorsal crest is reduced to a very feebly serrated 

 ridge. Twenty-nine to thirty-five scales round the middle of the body ; 

 dorsal scales nearly four times as large as ventrals, smooth, pointing 



