AtrAMlD^. 





Fig". 20. — Calotes versicolor. 



States, and in Upper Perak, but rare in South 

 Perak,and does not seem to extend to the Southern 

 portion of the Mahay Peninsula. Pairly common 

 in Penang near sea-level, but rare in the hills 

 (2200 feet). 



It is an extremely active lizard, principally 

 found in the neighboui'hood of human dwellings. 

 According to Annandale, when it is much excited 

 and in rapid motion, the locomotion becomes, at 

 any rate, for short distances, bipedal. Annandale 

 (P. Z. S. 1899, p. S5S) has published an account 

 of its nuptial dance, whicli is of interest as 

 showing that the changes of colour proceed very 

 largely from a psychological or psychico-physio- 

 logical stimulus. 



73, Calotes emma. 



Gray, Cat Liz. p. 244 (1845) ; Giinth. Kept. Brit. Ind. p. 144 (1864) : 

 Boulenp-. Cat. Liz. i, p. 324, pi. xxv, tio. 1 (1885); id. Faun. Brit. 

 Ind., Kept. p. 137 (1890); id. Fascic. Malay., Zool. i, p. 155 

 (1903). 



Upper head-scales imbricate, keeled, considerably enlarged on 

 supraorbital region ; a long spine, surrounded by small ones, 

 behind supraciliary edge, and two others on each side between 

 tympanum and nuchal crest. No \A"ell-developed gular pouch : 

 gular scales keeled, as large as ventrals or a little larger. A very 

 strong oblique curved fold in front of shoulder. jVuchal ci'est 

 composed of long lanceolate spines, soon decreasing in size, the 

 •dorsal crest reduced to a feebly serrated ridge. 51 to 55 scales 



