PROTOZOA 



Development of 

 Parasite in 



Some may be taken 



into the stomach 

 \ J*_ of the Mosquito when 

 it bites 



PIG. 4. Diagram to illustrate the life-history of the malarial parasite; i, is 

 a red blood corpuscle; 2 to 7 show the development of the parasite in the corpuscle; 

 a, b, c, d and a', b', c', d' and e show the development of the parasite in the stomach 

 of the mosquito; /, g, h, i, show the development in the capsule on the outer wall of 

 the stomach of the mosquito; k is the salivary gland of the mosquito. Greatly 

 enlarged. (After Doane, Insects and Disease.) 



