299] STUDIES ON MYXOSPORIDIA—KUDO 61 



Vegetative form: Form variable. Many individuals show, however, 

 a very characteristic form. It is elongated and has the length of about 

 120ju. The anterior end is enlarged into a disc-shaped depression, on the 

 edge of which, the branched pseudopodia are formed. The body gradually 

 narrows itself toward the posterior end. Also club-shaped, etc. The short 

 lobose pseudopodia show no movement like that of oars. 



Georgevitch's form: Young forms, oval or rounded, are attached to 

 the epithelial cells of the bladder with a long filiform pseudopodium at the 

 free end. Such forms often agglomerate in great number. 



Spore: Form similar to the spore of Leptotheca agilis. Dimensions on 

 the average: Sutural diameter 12 to 15ju, breadth 18 to 20^. 



LEPTOTHECA POLYMORPHA (Thelohan) Labbe 



1895 Leptotheca elongata Thelohan 1895 : 3n-ii2, 



1899 Leptotheca polymorpha Labbe 1899 : 88 



Habitat: Gall-bladder of Phycis mediterraneus {P. phycis L.); Banyuls. 



Vegetative form: Form extremely polymorphous, with three main 

 t5^es. 1) Somewhat regularly club-shaped, with lobose pseudopodia, some- 

 times filiform at one end. 2) Irregular as is the case with Ceratomyxa 

 truncata, with long (25;u) ectoplasmic processes, which are motionless or 

 very slow in motion. Lobose pseudopodia are formed actively. 3) More 

 or less rounded with bristle-like filose pseudopodia. Intermediary forms 

 are also found. Often many individuals unite together. The protoplasm 

 is much different from other forms, i.e., more homogeneous and compact. 

 Granules are hardly visible on account of vacuolar appearance. 



Spore: Dimensions: sutural diameter 10 to 12;u, breadth 18 to 20ai, 

 length of polar filament 40/x. 



LEPTOTHECA PARVA Thelohan 



[Fig. 7] 

 1895 Leptotheca parva Thelohan 1895 : 333 



1912 Leptotheca parva Auerbach 1912 : 42-43 



Habitat: Gall-bladder of Scomber scomhrus L.; Marseille, Le Crclsic, 

 Le Vivier-sur-mer, Kristiansund, Stavanger, Bergen. 



Vegetative form: Form ordinarily rounded, spherical or subspherical. 

 Often club-shaped. Size not larger than 12 to IS/t in diameter. Proto- 

 plasm finely granular. Pseudopodia lobose. 



Spore: Small, more or less elongated, curved in arch-form. Dimen- 

 sions: sutural diameter 3 to 4/x, breadth 8 to IOm- 



LEPTOTHECA RENICOLA Thelohan 

 1895 Leptotheca renicola Thelohan 1895 : 2>ZZ 



Habitat: Urinary tubules of the kidney of Scomber scombrus L.; Mar- 

 seille, Le Croisic. 



