33 2 Darwin, and after Darwin. 



those belonging to a different order of insect, when 

 the latter is engaged in its peculiar avocation. A 

 glance at the figure is enough to show the means 

 employed and the result attained. In A, an ant and 

 its mimic are represented as about i\ times their 

 natural size, and both proceeding in the same direction. 

 It ought to be mentioned, however, that in reality 

 the margin of the leaf is seldom allowed to retain its 

 natural serrations as here depicted : the ants usually 

 gnaw the edge of the real leaf, so that the margin of 

 the false one bears an even closer resemblance to it 

 than the illustration represents. B is a drawing from 

 life of a group of five ants carrying leaves, and their 

 mimic walking beside them 1 . 



1 Both drawings are reproduced from Mr. Poulton's paper upon the 

 subject (Proc. Zool. Soc., June 16, 1891). 



