ENTOMOLOGY. 



391 



10. HOMOPTEEA (MacLeay). 

 Froghoppeks, Aphides, or Green Fly, Scale Insects, &c.* 



;s^ 



Potato Frog-fly : 1 and 2, eggs ; 3 and 4, pupa ; .3 and G, Frog-fly, nat. size 

 and magnified. 



Wings usually four (but sometimes two, or absent), entirely 

 membranous, slanting downwards, the upper largest, and not 

 overlapping when at rest. Head with a mouth formed for 

 suction and placed far back beneath it. Horns often short. 

 Larvffi various ; pupae usually active. 



Bean Aphis : 1, Bean-shoot with Aphides ; 2, male, maj 

 4, wingless female, magnified. 



8, nat. size: 



This Order contains such various forms of insects that it is 

 convenient to take the sub-division, as given by Prof. West- 

 wood, into three sections, of Trimcra, Dimcra, and Monomera, 

 having respectively three, two, and one, joints in the feet. 



The first includes many large foreign insects, as Lanthorn 



* The insects included in this and in the following Order by Prof. Westwood, 

 are included at the present day in the Order Hemiptera (or Ehynchota of 

 Burmeister), and classed respectively under the Sub-orders of Hemiptera, 

 Pleteroptera, and Heniiptera-Homoptera. I have retained the distinction as 

 given by Prof. Westwood, as the separation of these divisions seems to me to 

 make the subject clearer. 



