No. 612] 



MTXOSPORIDIAN LIFE CYCLE 



737 



10. Keysselitz . . .Myxobolus pfeifferi One to four round chro- 

 matic, deeply staining 

 bodies, disappearing after 



(Figs. 33, 34) after the 



copulation (Figs. 22, 23). 



12. Lo Guidice . . . Myxoholus eUipsoides Several round chromatic, 



deeply staining bodies, 

 which are not observed 

 after the spore membrane 

 is formed (Figs. 41, 42). 



13. Schroeder . ■ . . Sphccrom.yxum sabra^esi ...Chromatic, deeply staining 



leguya psorospermic 



15. Georgevitch . . Henneguya gigantica Four ^ deeply staining chro- 



spore, they disappear after the spore membrane is formed. 

 Tt is proved that in Chloromyxum leycligi they are of 

 glycogenous nature as well as the spore membrane itself 

 and the polar threads. In some cases their number is ir- 

 regular. These chromatic lumps may be products of 

 nuclear division, but the true chromosomes have not been 

 found. Those authors (Mercier, Awerinzew, Parisi) who 

 believe they have shown a s^Ticaryon forming, have also 

 observed an extrusion of chromatin immediately after the 

 union of the supposed micro- and maero-gametooyte. In 

 ^fercier's case a second diffusion of round bodies is shown 

 inside the spore which corresponds witli the facts ob- 

 served in other species. Ceratomyxa drepanopsettce 



