ORTHORRHAPHA 



Nematocera 



Culicidae 



Fij;. 14. Laiva, Corethru. Introveit, plain. 



Fiy. 15. Larva, Gw/Z/n;. Introvert, with included 

 air vesicle. 



Fig. 16. Lar\a, Corellira. 



Figs. 14-17. Corcthra pluinicoritis F. 



Fig. 14. Larva showing introvert 2-5 mm. from 



back of head to end of introvert. 



Fig. 15. Larva showing proboscis 3 mm. from 



back of head to end of proboscis. 



Fig. 16. Transparent larva, 7 mm. 



Fig. 17. Pupa, 7 mm. 



(Micro-slides, Waddington.) 



Fig. 17. Pupa, Cont/irii. 



