IX 



WARNIIs^G COLORATION AND MIMICRY 



241 



cases as to be mistaken when on the wing, and the difference 

 only to be detected by close examination. As an example of 

 the resemblance, Avoodcuts are given of one pair in which the 

 coloui's are simple, being olive, yellow, and black, Avhile the 



Fig. 23.— Jltthona psidii (Heliconida'). Leptalis orise (Pieridae). 



very distinct neuration of the wings and form of the head and 

 body can be easily seen. 



Besides these Pieridoe, Mr. Bates found four true Papilios, 

 seven Erycinidse, three Castnias (a genus of day-flying moths), 

 and fourteen species of diurnal Bombycida^, all imitating some 

 species of Heliconidse which inhabited the same district ; and 

 it is to be especially noted that none of these insects were so 

 abundant as the Heliconida^ they resembled, generally they 



