Be,'.. 19 ir,. yflSlCFLLANEdrS NOTF.S. 257 



number, 15 to 18 x 10 to 11 mm. in size. The first young one 

 appeared on Aug. 20th, and measured from snout to vent 26 mm., tail 

 48 mm. in length. They had the nsual drab colours of their parents. 



The colour changes in these specimens, I found, were not broiight 

 about by sexual excitement only. Fear would produce exactl}' the same 

 effect. This could be demonstrated by putting a snake into their cage. 

 Their attitude then was that of being fascinated and unable to escape. 

 They invariably faced the snake, bowing to it and nodding their heads 

 exactl}^ as when courting. The crest was strongly erected, the gular 

 pouch fully distended, and the colours would gradually become more 

 vivid until they were almost as intense as during sexual excitement. 



Calotes mi/staceus is widely distributed throughout Siam, its 

 handsome colouring usually attracting attention wherever it is found. 

 It has been seen as far South as Hua Hin, but below that Latitude 

 has not yet bee>i recorded. It is not found in Bangkok, or in the 

 country immedialely surrounding, but away from the great plain, its 

 haunts and modes of life are similar to those of G. versicolor (the com- 

 mou Bangkok " chameleon"), to which, when " off colour," it bears a 

 close resemblance. 



MALCOLM SMITH. 



Dec, 1915. 



