309] STUDIES ON MYXOSPORIDIA—KUDO 71 



Vegetative form: Large (100 to 120^), disc-form ameboid, containing 

 a large number of enclosures and granules of different size. In one case, a 

 number of this form, carrying no spore, underwent budding, which resulted 

 in forming spherical forms of various size, some of which divided again into 

 2 to 6 parts (Plasmotomy?). Monosporous and disporous. 



Spore: More or less curved. Two polar capsules lie closely together 

 on each side of the sutural plane. Ends of shell-valves are rounded. 

 Dimensions: breadth 50 to 60/^, sutural diameter 12 to 15)u, thickness 

 12 to 15/x, polar filament very long (length not given). 



Remarks: Awerinzew thinks this is the intermediate form between 

 Leptotheca and Ceratomyxa. 



CERATOMYXA sp. (?) Awerinzew 

 1913 Ceratomyxa sp. (?) Awerinzew 1913a : 154 



Habitat: Gall-bladder of Scaiophagus argus; Delagoa Bay (Africa). 



Vegetative form: Small, disc-form ameboid (25 to SSfx), containing 

 two spores of indistinct contour, on account of incomplete formation of the 

 shell. Two spores, apparently, developed in one pansporoblast. Dis- 

 porous. 



Spore: Form could not exactly be made out. Polar capsules were 

 arranged like those of other Ceratomyxa. 



CERATOMYXA sp. (?) Awerinzew 

 1913 Ceratomyxa sp. (?) Awerinzew 1913a : 154r-155 



Habitat: Gall-bladder of Rhinobathus Awer. (?); Lorenzo Marques 

 (Africa). 



Vegetative form: Irregular shape. Endoplasm highly granular. In the 

 epithelial layer of the gall-bladder numerous, spherical cysts (30 to 35/x) 

 were found. Two spores are formed in one pansporoblast. Disporous. 



Spore: Cylindrical with broad and slightly rounded ends. Dimensions: 

 sutural diameter 16 to 19/x, breadth 70 to 80/x, thickness 16 to 19/x. 



CERATOMYXA ACADIENSIS Mavor 

 [Figs. 44 to 47] 



1915 Ceratomyxa acadiensis Mavor 1915 : 27-30 



1916 Ceratomyxa acadiensis Mavor 1916 : 551-574 



Habitat: Gall-bladder of Urophycis chuss (trophozoites are attached to 

 undetermined Myxosporidia, see p. 176), Zoarces angular is, Pseudo- 

 pleuronectes americanus; New Brunswick (Canada) (July to September). 



Vegetative form: Polymorphous. Typically club-shaped with very 

 long tail, or irregularly stellate. Pseudopodia show rigidity. Sometimes 



