OTHER MEMBERS OF THE CLASS — INSECTA 183 



on the other hand, are five or six inches long and thicker 

 than one's thumb. 



KiG. 124. — Stalk of cotton, showing the egg (e), larva (a), pupa (h), and 

 adult of the cotton worm moth. 



Flies. — The order, Diptera (two-winged), contains the 

 flies, gnats, mosnuitoes, midges, and others, and is a very 



