SPOROZOA, GREGARINIDA 



383 



curved; anterior end swollen, club-shaped; posterior end at- 

 tenuated; spores with sharply pointed ends. One species. 



R. claviformis B. (Fig. 175, i, j). In seminal vesicles of Odo- 



FiG. 175. a-c, Monocystis ventrosa (a, X260; b, Xl50; c, X830) 

 (Berlin); d, e, M. lumbrici, X280 (Berlin); f, Apolocystis gigantea, 

 X90 (Troisi); g, A. minuta, with attached phagocytes, X770 (Troisi); 

 h, Nematocystis vermicularis, X80 (Hesse); i, j, Rhabdocystis claviformis 

 (i, X220; j, X270) (Boldt) ; k, 1, Enteroajstis ensis (k, Xl40) (Zwet- 

 kow). 



lasium complanatum ; sporadins extended, up to 300^ by 30ju; 

 pellicle distinctly longitudinally striated ; zooamylum bodies 2-4/i 

 in diameter; cysts biscuit-form, 110^ by lOfx; spores 16^ by 8/x. 



Genus Enterocystis Zwetkow. Early stages of trophozoites in 

 syzygy; sporadins in association ensiform; cysts spherical without 



