I04 



PROTOZOA 



CHAP. 



peatedly, and then the schizont segments into a flat brood of 

 germs (merozoites), relatively few in the parasite of quartan 

 fever (Uaemamoeba malariae, Fig. 35, E-G), many in that of 



of as 



S 9 



fife 



N 







-]jg« p«]i)[oli¥IaTtr8|» |e|9l»l . 



§-l 



Fig. 35. — Life-history of Malarial Parasites. A-0, Amoebula of quartan parasite to sporu- 

 lation ; li, its gametocj'te ; I-M, amoebula of tertian parasite to sporulation ; N. 

 its gametocyte ; 0, T, " crescents " or gametocytes of Lamrania ; PS, sperm-forma- 

 tion ; U-W, maturation of oosphere ; A', fertilisation ; T, zygote, a, Zygote 

 enlarging in gut of Mosquito ; b-e, passing into the coelom ; f, the contents seg- 

 mented into naked spores ; g, the spores forming sickle-germs or sporozoites ; h, 

 sporozoites passing into the salivary glands. (From Calkins's Protozoa, after Ross 

 and Fielding Ould.) 



tertian (IT. vivax, Fig. 35, M). These brood-cells escape and 

 behave for the most part as before. But after the disease has 

 persisted for some time we find that in the genus Haemamoeba, 



