EHOPALOCERA. 



37 



tlie very same localities; (3°) tliat in eight cases the mimickers wei-e 

 known to be very much scarcer than the species which they copy ; 

 (4°) that in five cases where the Danais or Acrma presents local forms 

 or merely slight varieties, even these were mimicked by individuals of 

 the imitating species; (5°) that in three cases where the sexes of the 

 insect mimicked diSered strikingly from each other, the sexes of the 

 mimicker presented corresponding differences ; and (6°) that in four 

 cases observed by me in life it was next to impossible to distinguish 

 the mimicker from the species which it mimicked. It must be remem- 

 bered that these extraordinary likenesses are not those of general 

 colouring and pattern alone, but include outline and form, and extend 

 to minute reproduction of prominent markings, however small ; and 

 that the deception is often further ensured by following closely the 

 kind of flight and mode of resting proper to the species copied. 



The following table exhibits the known cases of mimiciy among 

 Extra-Tropical South- African Butterflies : — 



