454 BIOLOGY OF THE PROTOZOA 



Family 1. ChloromyxidSB, Tlielohan (1892). Spores with four polar 

 capsules; one, two, or many spores. 



6. Genus Chloromyxum, Mingazzini (1890). With the characters of the 



family, 22 species, 2 in amphibia, 20 in fresh- and salt-water fish. 



Family 2. Sphaerosporidae, Davis (1917). Spores with two polar cap- 

 sules, monosporous, disporous and polysporous. 



7. Genus Sphcerospora, Thelohan (1892). Ccelozoic and histozoic para- 



sites of fresh- and salt-water fish, spores with two polar capsules, 

 10 species. 



8. Genus SlnuoUnea, Davis (1917). Urinary bladder of marme fish, 



spores with or without lateral processes, disporous and polysporous, 

 sutural line of spore sinuous, 5 species. 



Sub-order 3. Platysporea, Kudo (1919). 



Sutural plane the longest diameter of the spore or at an acute angle with 

 it; one or two polar capsules; sporoplasm with or without an iodinophilous 

 vacuole. Fusiform. 



Family 1. Myxidiidse, Thelohan (1892). Spore with two polar capsules, 

 one at each end; sporoplasm without iodinophilous vacuole. 



9. Genus Mijxidium Biitschli (1882). Ca^lozoic and histozoic parasites 



of salt- and fresh- water fishes and in reptiles; spores more or less 

 regularly fusiform with pointed or rounded ends , polar threads long 

 and fine, monosporous, disporous and polysporous, 26 species. 



10. Genus Zschokkella, Auerbach (1910). Coelozoic parasites of fresh- and 



salt-water fish, spores semicircular in front view, polar capsules 

 large and spherical, sutural line usually S-form, monosporous, di- 

 sporous and polysporous, 4 species. 



Family 2. Myxosomatidse, Poche (1913). Spores with two polar cap- 

 sules at the anterior end, sporoplasm without iodhiophilous vacuole. 



11. Genus Myxosonia, Thelohan (1892). Histozoic parasites of fresh- and 



salt-water fish, spores ovoidal, flattened, and more or less elongate, 

 polysporous, 3 species. 



12. Genus Lentospora, Plelm (1905). Histozoic parasites of fresh- and 



salt-water spores lenticular in form with two polar capsules at the 

 anterior end, disporous and polysporous, 6 species. 



Family 3. Myxobolidse, Thelohan (1892). Ca4ozoic and histozoic para- 

 sites of fresh- water fislics mainly, spores with one or two polar capsules at 

 the anterior end and with or without posterior processes, sporoplasm with 

 an iodinophilous vacuole, mainly polysporous. 



13. Genus Myxobolus, Biitschli (1892). Histozoic parasites of fresh-water 



fish (56 species), marine fish (5 species), annelids (1) and amphibia 

 (1), spores ovoidal, ellipsoidal or flattened, with one or two polar 

 capsules, without posterior processes, 63 species. 



14. Genus Henneguya, Thelohan (1892). Ccelozoic and histozoic parasites 



mainly in fresh- water fish, spores spheroidal or ovoidal with two 

 polar capsides at the anterior end, posterior ends of shell valves 

 prolonged into processes which unite to form a tail in the median 

 line, monosporous, disporous and polysporous; 32 species. 



15. Genus Hoferellus, Berg (1898). Coelozoic and histozoic parasites of 



fresh- water fish; spores pyramidal with two posterior processes from 

 the lateral faces; polysporous, 1 species. 



