ii8 



DISEASES DUE TO PROTOZOA 



Breathing apertures 



The anterior parts are 

 shown in the prone position 

 and the hinder ends in profile, 

 owing to the body being 

 twisted by the pressure of 

 the cover-glass. 



(Anopheles rossii, Giles ; larva) 



Breathing tube 



(Culex impellens, Walker ; larva) 



Palpi 



Palpi 



Male 



Female 



Anooheles 



G. M. Giles, de nat. dec. 



Male 



r 



Culex 



Femcle 



