HOMOPTEEA. 



The Homopteea, or Equal-winged Insects, are so called be- 

 cause both pairs of wings are of tlie same character. The mouth 

 is modified into a proboscis, and the feet never have more than 

 three joints. In our own country the species are but small, and 

 not at all conspicuous, but in other countries they often attain 



Fic. 47'2. — Cicada sejiterndeccin. 

 .Green; wiiiiis eilgerl with brown.) 



a great size, and play a conspicuous part in the economy of 

 Nature, mostly as destructive agents. 



One of the most celebrated examples of the kind is the insect 

 so familiar in North America under the name uf Seventeen- 



