Sporozoa 295 



Fig. 6. 15. A-F. Aclelina deronis Hauschka and Pennypacker (after 

 Hauschka): Early (A) and later syzygy (B), xl700; sporoblasts in oocyst, 

 remains of microgametocyte still attached (C), xl600; mature sporocyst (D), 

 xl900; young schizont in a peritoneal cell (E), xl600; merogony (F), xl600. 

 G. Oocyst of Adelea ovata Schneider, with sporocysts; x960 (after Shellack 

 and Reichenow). H, I. Chagasella hartmanni (Chagas) Machado: oocyst with 

 three developing sporocysts (H); sporocyst with four sporozoites (I); x750 

 (after C). J, K. Hepatozoon tntiris (Balfour) Miller (after M.): ookinete 

 penetrating intestinal epithelium (J): oocyst (K). L. Hepatozoon canis 

 Leger, portion of oocyst containing sporocysts; x630 (after Wenyon). M. 

 Hepatozoon adiei, gametocyte in leucocyte; x2100 (after Hoare). 



Taxonomy 



On the basis of life-histories, the Coccidia may be divided into two or- 

 ders, the Adeleida and the Eimeriida. In the Adeleida, the gametocytes are 

 associated in syzygy during differentiation and only a few microgametes 



