JV 4' J>api5bjfem.i$ dclHUtr. dalrurctcs.Tom 4. 



1 / .-', •»//» 



FIG 20. HEAD AND THORAX OF THE MOSQUITO 



Fig. 1. Male. Figs. 2-7. Females, 4 7, in the act of stinging. Reproduction of 

 a plate in Reaumur's Memoires pour servir a I'histoire des Insects, 1739. 



26 



