102 



THE GENESIS OF SPECIES. 



[Chap. III. 



ov spectres, to ^vllicll this insect lielongs, is more or less 

 imitative, and a great number of the species are called 

 * walkinii-stick insects,' from their sinijiihir resemhlance 

 to twigs and hranclies." 



A'min, ]\Ir. AVaHace ^ tells us of as many as four kinds 

 of orioles, which birds mimic, more or less, four species of 



THK r.ONO-TAILED BfRO »>K PARADISE. 



a genus of lioney-suckers, the weak orioles finding tlieir 

 profit in heing mistaken hy certain bii-ds of prey for tlie 

 strong, active, and gregarious huuoy-suckers. Now many 

 other birds would be benefited by similar mimirrv, which 

 is none the less confined, in this part of the world, to the 

 oriole genus. It is true tliat the absence of mimicry in 



' " Mahiy ArrliiiK'lago," vol. ii. p. loU ; and " Natural Sel'^ction," p. lOi. 



J 



