SPOROZOA, GREGARINIDA 



435 



Genus Stomatophora Drzewecki. Trophozoites spherical or ovoid; 

 anterior end with a sucker-Hke epimeritic organella with a central 

 mucron; spores navicular. Several species. 



Fig. 203. a, Rhynchocystis pilosa, X200 (Hesse); b, c, R. porrecta: 

 b, Xl70 (Hesse); c, spore, X1330 (Troisi); d, e, Zygocystis wenrichi 

 (d, X45; e, X450) (Troisi); f, Pleurocystis cuenoti, Xl90 (Hesse); g, h, 

 Aikinetocystis singularis (h, X320) (Gates); i-k, Stomatophora coronata 

 (i, j, X430; k, X870) (Hesse); 1, Astrocystella lobosa, Xl20 (Cognetti); 

 m, Craterocystis papua, X65 (Cognetti); n, Choanocystella tentaculata, 

 X570 (Cognetti); o, Choanocystoides costaricensis, X470 (Cognetti). 



S. coronata (Hesse) (Fig. 203, i-k). In seminal vesicles of Phere- 

 tima rodericensis, P. hawayana and P. barhadensis; trophozoites 

 spherical, ovoid or elliptical, about 180/x by 130^; endoplasm with 

 ovoid zooamylon grains; cysts ellipsoid or fusiform, 7O-80/i by 



