90 



THE INVERTEBRATA 



undergoes syzygy, the organism would appear to belong to the Adelca 

 stock, whereas the Haemosporidia are probably related to Eimeria. 



Fig. 74. A diagram of the Hfe cycle of Eimeria schubergi. A, Infection of a 

 cell of the intestinal epithelium of the host. B, Growth of the agamont. 

 C-E, Agamogony (schizogony). F, G, Gamogony. H, Conjugation (syn- 

 gamy). I-L, Division of the encysted zygote into sporoblasts. M, Division 

 of each sporoblast within its cyst into two sporozoites. The oocyst containing 

 the sporocysts is passed out of the host and swallowed by another. N, Escape 

 of the sporozoites in the intestine of the new host. 



Schellackia and Lankesterella, which have no syzygy, are transitional 

 to the Haemosporidia, under which (on p. 91) their life histories are 

 described. 



