407] STUDIES ON MYXOSPORJDIA—KUDO 169 



Spindle shape, with truncate anterior end and very long thread like 

 tail at the posterior end. The tail seems split into two at about the middle 

 part of its length. Gentian violet stains the tail so intensively that its 

 entire length could easily be made out. Dimensions: total length 87.5 to 

 IIO.Sm, length of the body 10.5^, breadth 5/i, length of tail 77 to lOO/ii, 

 length of polar capsule 5/i, length of polar filament 70/i (pressure or dessica- 

 tion followed by immersion in water). 



Georgevitch's form: length excluding tail 15jli, breadth 6/i, length of 

 tail 75^1, length of polar capsule 6/*, length of polar filament 75/*, diameter of 

 the iodinophilous vacuole 4/i. 



Remarks: Nemeczek mentions that from October on, cysts had no 

 spores, only containing propagative cells. The velocity of the development 

 of spores depends upon the temerature of water. 



Georgevitch worked out the spore formation of the species and observed 

 that the binucleated sporeplasm emerged from the posterior end of the 

 spore. 



HENNEGUYA (?) sp. Nemeczek 

 [Figs. 536 to 539], 



1911 Henneguya sp. Nemeczek 1911 : 1S7-1S9 



Habitat: Branchiae of Abramis bratna; Komorn, Komitat Komorn, 

 Hungary (March). 



Vegetative form: Cysts in the branchiae. 



Spore: Besides normal spores of Myxobolus rotundus (page 149), spores 

 of Henneguya type in small number were found. The anterior part of 

 these spores resembles that of the species mentioned above, while the 

 breadth is much smaller (8/i) than the latter. Majority of spores have a 

 thread like tail, 10 to 15/i long, which was often bifurcated. An iodinophil- 

 ous vacuole was fairly marked. 



Remarks : It is placed here as a species of Henneguya by reason of the 

 bifurcate tail. 



HENNEGUYA GASTEROSTEI Parisi 

 [Figs. 540 to 543] 



1912 Henneguya gasterostei Parisi 1912 : 296-297 



Habitat: Kidney of Gasterosteus aculeatus L.; Lago di Garda (Feb- 

 ruary). 



Vegetative form: Rounded or oval, usually with two, but rarely with 

 four spores. Ectoplasm thin and hyaline. Endoplasm contains numerous 

 granules, most probably of fatty nature and decreasing in number as 

 spores grow. Free full-grown spores were seen abundantly in the connec- 

 tive tissue of renal tubules, glomeruli, etc. Disporous and polysporous. 



