345] 



STUDIES ON MYXOSPORIDIA—KUDO 



107 



Genus MYXIDIUM Blitschli 

 1882 Myxidium Biitschli 1882 : PI. 38 



The characters of the genus are described on page 58. 

 Type species: Myxidium lieberkiihni Biitschli. 



MYXIDIUM LIEBERKUHNI Butschli 

 [Figs. 221 to 240] 



Habitat: Urinary bladder of Esox lucius L., Lota lota L. {L. vulgaris)', 

 France, Canada (Georgian Bay), U. S. A., (Wisconsin, Lake Mendota), 

 Italy (Lago Maggiore, Lago di.Como, Milano), Germany. 



Vegetative form: Form variable with lobose or immovable filiform 

 pseudopodia. Clear differentiation of protoplasm. Cohn described third 

 layer of protoplasm (mesoplasm). Endoplasm yellowish in older tropho- 

 zoites, contains yellow globules, fat globules and hematoidin crystals. 

 Size varying with age up to a maximum length of 300ju by a breadth of 

 136)u (Butschli). Plasmotomous multiplication active. Cohn described 

 budding of larger forms, while Laveran et Mesnil observed only the division 

 of smaller forms. Each pansporoblast develops into two spores. Poly- 

 sporous. 



Spore: Elongated fusiform. Shell with longitudinal striations. Polar 

 capsule at each end of the spore. The longer axis of polar capsules coincides 

 with that of spore. Dimensions: length 18 to 20)Lt, width 5 to 6/i. Mavor's 

 measurement: polar capsules Sju by 2.5 to 3)U, length of polar filament 

 40 to 45/1. 



