359] STUDIES ON MYXOSPORIDIA—KUDO 121 



SPHAEROMYXA HELLANDI Auerbach 

 [Figs. 323 and 324] 



1909 Sphaeromyxa hellandi Auerbach 1909 : 78-79 



1910 Sphaeromyxa hellandi Auerbach 1910b : 772-774 

 1910 Sphaeromyxa hellandi Auerbach 1910c : 174^175 



1912 Sphaeromyxa hellandi Auerbach 1912 : 4, 40 



Habitat: Gall-bladder of Molva vulgaris Flem., Centronotus gunellus, 

 Brosmius brosme Asc; Bergen, Torghatten. 



Vegetative form: Large and rounded disc form. Protoplasm is dis- 

 tinctly differentiated into ectoplasm and endoplasm. Thickness up to 

 160/i, folded in the bladder. Ectoplasm finely granular; in unstained speci- 

 mens, it is recognizable as 10 to 12jli thick layer, in which about 2n thick 

 radially striated outer layer and 8 to 10/x thick inner finely granular region 

 can be distinguished. In stained sections, the outer layer remains 

 unstained. Endoplasm highly alveolar, contains refractive granules of 

 different size which are not stained with Sudan III. Each pansporoblast 

 develops into two spores. Polysporous. 



Spore: Arch form in front view. The degree of curvature varies 

 greatly. Sutural line curved in S-shape and well marked. Both ends more 

 or less truncated. Polar capsule at each end. Polar filament being wound 

 along the longest axis of the polar capsule and is extruded with KOH. 

 Sporoplasm rounded with one or two nuclei. Dimensions: length 20.8 to 

 26;u, breadth and thickness 5 An, length of polar capsule 10 to lO.Sju. 



SPHAEROMYXA EXNERI Awerinzew 

 [Figs. 325 and 326] 



1913 Sphaeromyxa exneri Awerinzew 1913a : 155 



Habitat: Gall-bladder of Thysanophris japonicus; Lorenzo IVIarques 

 (Africa). 



Vegetative form: Not observed. 



Spore: Somewhat resembles that of S. hellandi Auer. in being bent 

 to one side with sutural line of S-form but differs in dimensions. Both 

 ends slightly tapering. Polar capsules two, one at each blunt end, in 

 which the polar filament is wound parallel to its longer axis. Sporoplasm 

 comparatively small and sharp-contoured, contains only one nucleus. 

 Dimensions: length 75 to 80/x, breadth 18 to 20/i, length of polar capsule 

 30 to 35m. 



SPHAEROMYXA GASTEROSTEI Georgevitch 

 [Fig. 327] 

 1916 Sphaeromyxa gasterostei Georgevitch 1916 : 88 



Habitat: Gall-bladder of Gasterosteus spinachia; Roscoff (September). 

 Vegetative form: Trophozoites form large plasmodia. 



