3871 STUDIES ON MYXOSPORJDIA—KUDO 149 



Spore: Oval. Two polar capsules usually unequal. Shell as in M. 

 cordis with a small peg closer to the anterior end, polar filament coiled 4 to 

 5 times, visible in the capsule. Sporoplasm with rarely one (syncaryon), 

 but usually two nuclei and an iodinophilous vacuole. A posterior process 

 as is seen in the spores of M. cordis, but much smaller, was occasionally 

 observed. Dimensions: length 11/i, breadth Sn, polar capsules 6jLt and 

 4/i long. 



MYXOBOLUS sp. Miyairi 



1909 Myxobolus sp. Miyairi 1909 : 126 

 Habitat: Branchiae of loach {Misgurnus anguillicaudatus Cant.?); 



Fukuoka? (Nippon). 



Vegetative form: Cysts were not observed. 

 Spore: No description. 



MYXOBOLUS sp. Wegener 

 [Fig. 465] 



1910 Myxobolus sp. Wegener 1910 : 78 

 Habitat: Branchiae (gill-arch) of Percafluviatilis L.; Germany (Frisches 



Haff, March). Only one case. 



Vegetative form: Cysts on a gill-arch, white and round, with a diameter 

 of 1.1mm. Polysporous. 



Spore: Form and size very variable. Rounded or elliptical, pointed at 

 the anterior end. Sutural edge showing folds at the posterior portion. 

 Dimensions: length 8 to 10)u (in round form) and Wjx (in elliptical form), 

 breadth 8 to 9/i, polar capsules 4 to 5ju by 2 to 3/x, length of polar filament 

 40m. 



MYXOBOLUS PERMAGNUS Wegener 

 [Fig. 466] 



1910 Myxobolus permagnus Wegener 1910 : 78-79 

 Habitat: Branchiae and operculum of P^rca /wwa^^Vu L., air bladder 



of Scardinius erythrophthalmus L.; Konigsberg (May), Pregel (March). 



Vegetative form: Cysts rounded in form and white in color, resemble 

 to those of M. gigas. No clear ectoplasm layer, nor typical protoplasmic 

 structure. Polysporous. 



Spore: Oval, sharply pointed at the anterior end. Sutural edge with 

 5 to 6 distinct folds at the posterior portion. Polar filament visible in' the 

 polar capsules. Dimensions: length 17 to 18/x, breadth 10 to 13/:, polar 

 capsules 7 to 8/x by 3.5 to 4ju. 



MYXOBOLUS ROTUNDUS Nemeczek 

 [Fig. 467] 



1911 Myxobolus rotundus Nemeczek 1911:156-157 

 Habitat: Branchiae of Abramis brama L.; Austria. 



