CHAP. VIII. 



CURIOUS BUTTERFLIES. 



201 



never be supposed to be the same insect, since the hind 

 wings are lengthened (tut into large spoon-shaped tails, no 

 rudiment of which is ever to be perceived in the males or 

 in the ordinary form of females. These tailed females are 

 never of the dark and blue-glossed tints which prevail in 



pirn. in coon. 



the male and often occur in the females of the same form, 

 but are invariably ornamented with stripes and patches of 

 white or bnff, occupying the larger part of the surface of 

 the hind wings. This peculiarity of colouring led me to 

 discover that this extraordinary female closely resembles 

 (when flying) another butterfly of the same genus but of a 

 different group (Papilio coon) ; and that we have here a 

 case of mimicry similar to those so well illustrated and 



