GS4 



Dli. II. B. KAXTHAM OX THE 



[May 3, 



Text-fig. 65. 



D;Afin.vM of lAt'c-cyiAc of Eimcria (Cocchlium) avium. 



T> H n'])n'si'nt Sclii/.ogoiiy. I-L, Gauietogony. N-T, Sporogoiij'. 



Kpitliolial host-colls (liagnunnuUicnlly outliiieil. 



A. Sporozoitewliicli iM'iu'tiatcs epitliclial I E. Sclii/.oiit with munorons tlaughter 



(•ell of thu (luodomiiii of the host 

 15. S])oro/,oitc curving on itself before 

 becoming rounded within the host 

 cell. 

 ('. Young, uniiniclentc trophozoite. 

 D. Kully grown trophozoite or uni- 

 nucleate ychizont. 



nuclei peripherally arranged, differ- 

 entiating to form merozoites (seeii in 

 transverse section). 

 F. Schizont showing further differentia- 

 tion of niero/.oitos (seen in oblique 

 section). 



