9 6 



Mosquitoes 



occur, while in Formosa three well developed kinds of 

 malaria and at least six different species of Anopheles 



Fig. 20. — Anopheles miculipennis (greatly enlarged) : a, male; 

 b, female. 



are found. It would seem also that the intermediate 

 host may impress on the parasite special properties 

 and biological characters. 



