til STORY OF ZOOLOGY. 



59 



taste bad, and yet are not eaten, because in flight, 

 in outline, and in marking of the wings they imitate the 

 Hcliconia so closely that even a systematist might be 

 easily deceived as to the systematic position (Fig. 13). 

 In a similar way bees and wasps, feared on account of 

 their sting, are imitated by other insects. In Borneo there 

 lives a large black wasp, whose wings have a broad white 



FIG. 14. a, Mygnimia aviculus, a wasp imitated by a beetle ; f, Coloborhombus f<^sciat^ 

 pennis. (After Wallace.) f nat. size. 



spot near the tip (Mygniinia avicnlus). Its imitator is a 

 heteromerous beetle (Coloborhombus fasciatipennis), which, 

 quite contrary to the habit of beetles, keeps its hinder 

 wings extended, showing the white spot at their tips, 

 while the wing-covers have become small oval scales 

 (Fig. 14). 



Sexual Selection is understood to mean a special 



