PL A TE X 



FIG. I. WALKING LEAF-INSECTS (PHYLLIUM SICCI- 

 FOLIUM), WHICH ESCAPE THE NOTICE OF THEIK 

 FOES BY MIMICING THE SHAI'E AND COLOUR OF 



LEAVES 



FIG. 2. THE CLIFDEN NONPAREIL 

 MOTH AT REST ON AN OAK FENCE 



FIG. 3. DAY-FLYING CLEARWING HAWK MOTHS THAI- 

 MIMIC BUMBLE BEES AND HORNETS 



