CLASSIFICATION 727 



Ge/i?f.s' ; Sphaeromyxa Thelolian, 1892. 



Spores fusiform, with truncated ends. Polar filament short and thick. 

 Trophozoites large and disc-shaped. Seven species. Polysporous (two 

 unknown). Six in body cavity, six in marine fish, one in amphibia. 

 Type species : Sphceromyxa balbianii Thelohan. 



G<?n»,s; Zschokkella Auerbach, 1910. 

 Spores semicircular in front view, pointed at ends. Polar capsules 

 large and spherical, opening on the fiat edge near the tips. Sutural line 

 usually curved in S form. Four species. Monosporous, disporous, and 

 polysporous. Body cavity. Two from marine and two from fresh-water 

 fish. Type species: ZschokJcella hildce Auerbach. 



(2) Family: MYXOSOMATID^ Poche, 1913. 

 Two polar capsules at the anterior end. Sporoplasm without iodino- 

 philous vacuole. 



Genus: Myxosoma Thelohan, 1892. 

 Spores ovoidal, flattened, and more or less elongated. Three species. 

 Polysporous. Tissue parasites. Two in fresh-water and one in marine 

 fish. Type species: Myxosoina dujardini Thelohan. 



Genus: Lentospora Plehn, 1905. 

 Spores similar to Myxobolus in form. Sporojolasm without any iodino- 

 philous vacuole. Six species. Disporous and polysporous (two unknown). 

 One in marine and three in fresh- water fish, two from fishes in both waters. 

 Type species: Lentospora cerebralis (Hofer) Plehn. 



(3) Family: MYXOBOLID.ZE Thelohan, 1892. 

 Spores with one or two polar capsules at the anterior end, with or 

 without posterior processes. Sporoplasm with an iodinophilous vacuole. 

 Majority polysporous in fresh- water fishes. 



Genus : Myxobolus Biitschli, 1882. 

 Spores ovoidal or ellipsoidal; flattened. One or two polar capsules at 

 the anterior end. Shell without posterior process. Sixty-three .species. 

 Polysporous (nine species unknown). Fifty-nine species in tissue; four 

 unknown. Five in marine and fifty-six in fresh- water fish, one in annelid, 

 and one in amphibia. Type species: Myxobolus miilleri Biitschli. 



