295] STUDIES ON MYXOSPORJDIA— KUDO 57 



angles to the sutural plane at the posterior side. 3 species. Disporous 

 and polysporous. All found in kidney of fresh-water fish. Type species: 

 Mitraspora cyprini Fujita. 



Suborder SPHAEROSPOREA nom. nov. 

 Spores spherical or subspherical, with two to four polar capsules. 

 Sporoplasm without iodinophilous vacuole. Vegetative form found in 

 body-cavity and tissue. Monosporous, disporous and polysporous. 

 Parasites of marine and fresh-water fish and amphibia. 



Family CHLOROMYXIDAE Thelohan 1892* 



Spores with four polar capsules. Monosporous, disporous and poly- 

 sporous. 



Genus CHLOROMYXUM Mingazzini 1890 

 With the characters of the family. 22 species. 18 in body cavity; 

 4 in tissue. 7 from marine and 12 from fresh-water fish, 2 in amphibia, 

 1 in insect. Type species: Chloromyxum leydigi Mingazzini. 



Family SPHAEROSPORIDAE Davis 1917 



Spores with two polar capsules. Monosporous, disporous and polyspo- 

 rous. 



Genus SPHAEROSPORA Thelohan 1892 

 Spores with two polar capsules. Monosporous, disporous and poly- 

 sporous. 10 species. Body-cavity and tissue. 5 from fresh-water and 5 

 marine fish. Type species: Sphaerospora diver gens Thelohan. 



Genus SINUOLINEA Davis 1917 



Spores with or without lateral processes. Two polar capsules spherical. 

 Sutural line sinuous. 5 species. Disporous and polysporous. In the 

 urinary bladder of marine fish. Type species: Sinuolinea dimorpha Davis. 



Suborder PLATYSPOREA nom. nov. 



Sutural plane of the spore coincides with or at an acute angle to the 

 longest diameter. One or two polar capsules. Sporoplasm with or without 

 an iodinophilous vacuole. 



Family MYXIDIIDAE Thelohan 1892 



Two polar capsules, one at each end. Sporoplasm without any 

 iodinophilous vacuole. Spores fusiform. 



*Th61ohan (1892) used the terms: Chloromyxid^es, Myxidid^es, Myxobolid6es, which 

 Gurley (1893) made over into Chloromyxidae, Myxidiidae, MjTcobolidae, so that the credit 

 of recognizing and establishing these families belongs to Thelohan. 



