568 BIOLOGY OF THE PROTOZOA 



Family Ceratomyxidae Doflein. 



2. Valves hemispherical or rounded. . .Genus Leptotheca Thelohan 

 Valves otherwise 3 



3. Spores spheroidal or ovoidal in front view; 



flattened in side view Genus Mitrospora Fujita 



Spores otherwise 4 



4. Spores pyramidal Genus Myxoproteus Doflein 



Spores oval in side view; front view isos- 

 celes triangle with convex sides. . .Genus Wardia Kudo 



Sub-order 2. Sphaerosporina (Sphaerosporea Kudo). 



Spore with 4 polar capsules Family Chloromyxidae 



Spores with 2 polar capsules Family Sphaerosporidae 



Family 1. Chloromyxidae Thelohan. 



One genus Genus Chloromyxum Mingazzini 



Family 2. Sphaerosporidae Davis. 



1. Spores with 1 polar capsule Genus Unicapsula Davis 



Spores with 2 polar capsules 2 



2. Spores with sinuous sutural line. . . .Genus Sinuolinea Davis 

 Sutural line not sinuous Genus Sphaerospora Thelohan 



Sub-order 3. Platysporina (Platysporea Kudo). 



1. Spores without iodinophilous vacuole 2 



Spores with an iodinophilous vacuole 



Family 3. Myxobolidae 



2. Spores with 1 polar capsule Family 4. Coccomyxidae 



Spores with 2 or 4 polar capsules 3 



3. One polar capsule at each of 2 poles 



Family 1. Myxidiidae 

 Two or 4 polar capsules all at one end 



Family 2. Myxosomatidae 

 Family 1. Myxidiidae Thelohan. 



1 . Polar filaments long and fine 2 



Polar filaments short and thick. . . .Genus Sphaeromyxa Thelohan 



2. Spores fusiform with pointed or rounded 



ends; polar capsules oppositely directed 



Genus Myxidium Butschli 

 Spores fusiform usually with truncated ends ; 



polar capsules obliquely directed . Genus Zschokkela Auerbach 

 Family 2. Myxosomatidae Poche. 



1 . Spores without posterior processes ; 2 polar 



capsules 2 



Four anterior polar capsules; with long 

 posterior processes Genus Agarelht Dunkerly 



2. Spore ovoidal, flattened, somewhat elong- 



ate Genus Myxosoma Thelohan 



Spore circular to oval in front view . . Genus Lentospora Plehn 

 Family 3. Myxobolidae Thelohan. 



1. Each valve of spore prolonged in long 



process Genus Henneguya Thelohan 



Valves without posterior processes. .Genus Myxobolus Butschli 



