62 INSECTS. 



ORDER X. HOMOPTERA (opoiog = homoios, alike). 



Pupa active.* Sometimes resembling the perfect 



insect. 

 Four wings, all clear and membranous ; or the 



fore-wings slightly thickened throughout. 

 Fore-wings largest, not overlapping. 

 Proboscis springing from under the face, near 



the throat. 

 Examples. Aphis, Cuckoo-spit insect, &c. 



ORDER XI. HETEROPTERA (trspog = heteros, different). 

 Pupa active, resembling the perfect insect. 

 Hind- wings clear and membranous. Fore-wings 



thickened in part, and clear in part, and 



overlapping each other.f 



Proboscis springing from the front of the face. 

 Examples. Water-boatman, Plant bugs, &c. 



ORDER XII. APHANIPTERA ('A^a^e = Aphanes, invisible). 

 Pupa inactive. 

 Wingless. 

 Example. flea. 



ORDER XIII. DIPTERA (Aic = dis, twice). 

 - Pupa inactive.^. 



Two wings, membranous, clear, and not folded. 

 A pair of balancers in place of hind-wings. 

 Examples. Gnat, Daddylonglegs Housefly, Blue 

 bottle, &c. 



* Except Aleyrodes. 



f There are several exceptions to this rule. The mouth must then de- 

 cide the order. J Exception, Gnats. 



