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gifted. Does the suitor make use of his 

 faculty as a means of seduction and appeal? 

 Does the other answer her lover's strophe 

 with a similar strophe? That this happens 

 under normal conditions, amidst the 

 branches, Is highly probable; but I should not 

 care to say so for certain, having never heard 

 anything of the kind among the pine-trees or 

 In the cage. 



The sound Is produced by the tip of the 

 abdomen, which, with a gentle movement, 

 alternately rises and falls, rubbing Its rear- 

 most segments against the hinder edge of the 

 wing-cases, which are held motionless. 

 There Is no special appliance on the rubbing 

 surface nor on the surface rubbed. The 

 magnifying-glass searches In vain for minute 

 ridges such as might produce a note. On 

 either hand all Is smooth. How then Is the 

 sound produced? 



Moisten the tip of a finger and run It over 

 a strip of glass, over a window-pane : you 

 will obtain a fairly well-sustained sound, not 

 unlike that emitted by the Cockchafer. 

 Better still: use a bit of india-rubber to rub 

 the glass with and you will obtain a pretty 

 faithful reproduction of the noise made by 

 the Insect. If the musical rhythm Is well 



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