152 



Fig. 72. 



Development of Coccidium schubergi 1, entrance of sporozoites in cell; 2, its 

 growth ; 3, nuclear multiplication ; 4, division into merozoites ; 5, macro-and 

 microgametes ; 6, zygote divided into four sporozoites. 8-11, Emeria stiedae. 8, 

 auto-infection ; 9, formation of sporoblasts ; 10, change of spores into sporqzoites ; 

 11, spore with two sporozoites, much enlarged; c, z, sporozoite ; e, epithelial cell; 

 k, n, nucleus ; mi, microgamete ; o, macrogamete ; r, residual body ; sp, spore ; 

 sp', sporoblasts. (1-7 after Schaudinn ; 8-11 after Wasielewsky and Metzner). 



20. Subclass 1. Telosporidia ( ) Sporozoa in 

 which the life of the individual ends in spore formation. 



21. Order 1. Gregarinida ( ) Telosporidia 

 possessing a firm pellicle and complex ectosarc ; intracellular during the 

 early stages of the life cycle, later free in the body cavities of inverte- 

 brates. 



f Examples: Monocystis, Porospora, Gregarina. (Fig. 71.) 





Fig. 73. Plasmodium malariae. 



A. Parasites of tertian malaria. 



B. Parasites of estivo-autumnal malaria. 



C. Parasites of quartan malaria. (After Thayer and Hewetson ) . 

 (From supplement No. 18 to the Public Health Service, Jan. 20, 1915.) 



