46 



MEMBERS OF INSECTS. 



by our English naturalists from gross blundering and 

 fatuity. 



Parts of the mouth in a day flying moth (Zygeend]. , the 

 upper lip ; b, b, the upper jaws ; c, c, the under jaws in form of 

 a sucker carrying the jointed feelers at their base ; d, the under 

 lip with the tonguelet in the middle, and the jointed feelers on 

 each side. 



In two- winged flies and gnats, the upper lip forms a 

 case, the two pairs of jaws are in form of bristles, and 

 were mistaken by Latreille for feelers, while the under 

 lip forms a tube. 



Parts of the mouth in a gnat, a, b, the upper lip and upper 

 jaws carrying the jointed feelers ; /, c, d, the under jaws and 

 tonguelet ; e, the under lip. 



