THE THALESTRIS BUTTERFLY. 



575 



well-known " Whites" that they can scarcely he distinguished 

 from them without careful observation. One of the most curi- 

 ously coloured is Appias placidia, of Amboyna. Above, this 

 insect is entirely brown, with the exception of a slight edging of 

 white round the wings. Behind, it is also brown, but looks as 

 if it had been thickly dusted with some grey flour. 



In colour the Calliclryas Thalestris much resembles our well- 

 known "Orange-tip" Butterfly, although the colours are dis- 

 tributed differently. The ground colour of the wings is king's 



Fig. 320.— Callidryas Thalestris. 

 (Yellow and orange. 



yellow, and near the middle of each of the upper pair is a large 

 oval patch of bright orange. Above this orange patch is a small 

 diamond-shaped mark of jetty black. The abdomen is yellow, 

 the thorax is black, with a fringe of very long bright yellow 



