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GENERAL PRINCIPLES OF ZOOLOGY 



they contain bad-tasting fat bodies. Another species of butterfly accom- 

 panies them (Fieri dae), which does not taste bad, and yet is not eaten, 

 because in flight, in cut, and marking of the wings it imitates the Helic- 

 onix so closely that even a systematist might easily be confused (fig. 13). 

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

 imitated by other insects. In Borneo there is a large black wasp, whose 



FIG. ii. Leaf-butterflies. A, Kallima paralecta, flying: a, at rest (after Wallace). 

 5, Siderone strigosus, flying; b, at rest (after C. Sterne). 



wings have a broad white spot near the tip (Mygnimia aviculus). Its 

 imitator is a heteromerous beetle (Coloborlwmbus fasciatipennis), which, 

 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). With many species the mimicry occurs only in the 



