136 



10. scn;^rs concolor fallax. 

 Robinson and Kloss, torn, cit., p. 225. 



Koli Penuan, 35 example.s. 



Met with under similar conditions to the precedino- race. 



These two forms are of coiu'se very closely related and present 

 only average differences, whicli are however, quite Avell marked when 

 the two series are compared as a whole. 



The brightest specimen of 8c. c. fallax is not more brilliant than 

 the dullest of Sc. c. samuiensis though the two series were collected 

 at practically the same time of year. 



The differences in colour may be correlated with a real difference 

 betAveen the climates of the two islands, Koh Pennan, the seaward 

 one, being stated to have a much greater and more uniformly 

 distributed rainfall than the landward one, Koh Pennan. 



(For measurements see helow.) 



Measurements of Scmrtis from Koh Samui and Koh Pennan : 



