THE INSECT 'ORDERS.' 257 



the last pair of legs. It has been noticed that the 

 males only have the poAver of producing this sound, 

 and hence the couplet — 



" Happy the Cicada lives, 

 Since they all have voiceless wives." 



The female Cicada: are furnished with a singularly 

 powerful instrument, by means of which they bore 

 holes in trees, in which they deposit their eggs. 

 The curious Cuckoo-spit, the Aphides, and the 

 Coccidce also belong to this class, as well as those 

 most singular of insects, the Lantern-flies of the 

 tropics. 



11. The order Heteroptcra contains the Boat- 

 flies and a few other aquatic insects, such as the 

 Water Scorpion and the Water Runner, along with 

 many tropical insects of singular forms. 



12. The order Aphaniptera contains the family 

 of Pulicidce, or Fleas, which, as the name of the 

 order implies, have no wings, or only rudimental 

 ones. Many curious things are known concerning 

 Fleas, and many singular enough anecdotes might be 

 told about them ; but, in deference to the delicacy 

 of my female readers, I will abstain from any details 

 concerning this family. It will, however, be inte- 

 resting to state that this is one of the insects which 

 Aristotle positively asserted to be produced from 



s 



