726 ORDER: MYXOSPORIDIIDA 



Gemis : Chloromyxum Mingazzini, 1890. 



With the characters of the family. Spores without posterior tail-like 



prolongations. Twenty-two species. Eighteen in body cavity, four in 



tissue. Seven from marine and twelve from fresh-water fish, two in 



amphibia, one in insect. Type species: Chloromyxum leydigi Mingazzini. 



Genus : Agarella Dunkerly, 1915. 

 Spores prolonged at posterior end into two processes. Only species 

 Agarella gracilis Dunkerly from testis of Lepidosiren 



(2) Family: SPH^ROSPORID^ Davis, 1917. 

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

 sporous. 



Genus: Sphaerospora Thelohan, 1892. 

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

 sporous. Ten species. Body cavity and tissue. Five from fresh-water 

 and five from marine fish. Type species: S2)ha}rospora dirergens Thelohan. 



Genus: Sinuolinea Davis, 1917. 

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

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

 urinary bladder of marine fish. Type species: Sinuolinea dimorjjJia 

 Davis. 



3. Sub-Order: Platysporea Kudo, 1919. 

 Sutural plane of the spore coincides with or forms an acute angle 

 with the longest diameter. One or two polar capsules. Sporoplasm with 

 or without an iodinophilous vacuole. 



(1) Family: MYXIDIID^ Thelohan, 1892. 



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

 philous vacuole. Spores fusiform. 



Gefius : Myxidium Biitschli, 1882. 

 Spores more or less regularly fusiform, with pointed or rounded ends. 

 Polar filaments long and fine. Twenty-six species. Monosporous, di- 

 sporous, and polysporous. Twenty-two in body cavity, four in tissue. 

 Fifteen in marine and six in fresh-water fish, two in fishes from both 

 waters, and three in reptilia. Type species: Myxidium lieberl'ilhni 

 Biitschli. 



