184 OTHER MEMBERS OF THE CLASS — L-^ftlECTA 



large group. The flies are characterized by having never 

 more than two wings. Some possess none. In place of the 



I-^lG. 125. — Pol_\'])lifrmi.^ moth. 



hind pair borne by bugs, butterflies, and dragon flies, a pair 

 of short, knoblied liairs. railed balancers, is found. The 



mouth jiarts are formed 

 for sucking and the meta- 

 nujrphosis is complete. 



Though insignificant in 

 appearance the niosiiuito 

 has become one of the 

 most important insects 

 of tliis group. It has 

 been demonstrated be- 

 }'ond a doubt that a 

 certain kind of moscjuito, 

 ,, ,, , ., called Anopheles, may 



— Kg.ii: raits ot ("oin]i]niNii(is(|iiitr) ^ 



{(■iii,:r). i;uhirg,..i. bear within its body, if 



Fig. ]2ti. 



