136 ILLINOIS BIOLOGICAL MONOGRAPHS [374 



Size 3.5mm. by 0.8mm. Cysts are surrounded by thick layers (7 to 8/li) of 

 the connective tissue of the host. Ectoplasm seems to be undifferentiated. 

 Endoplasm granular, contains a larger number of spores. Polysporous. 



Spore: Thelohan's diagnosis is as follows: 



Ellipsoidal or slightly oval. Shell with 3 to 5 folds along sutural edge. 

 Polar capsules of unequal size, mth a small intercapsular body. The 

 vacuole is difficult to stain with iodine. Dimensions: length 10 po 

 12/i, breadth Sju, polar capsule Tfx by 5/x. • 



Wegener's form is as follows: length 11 to 12/i, breadth 7.5 to 8/x, 

 larger polar capsule 6 to 7n by 3.5jLt, smaller one 4yn by 2.5 to 3/i. The 

 sporoplasm is shifted toward the smaller polar capsule. 



MYXOBOLUS ELLIPSOIDES Thelohan 



Habitat: Connective tissue of air bladder, branchiae, kidney, spleen, 

 liver and cornea of Tinea tinea L., branchiae oi Ahramis brama L., Alburnus 

 lucidus Heck., Leueiseus rutilus L., Squalius eephalus L., Ahramis vimpa 

 Cuv., Blieea bjorkna L., Idus melanotus; France, Vierwaldstatter See, 

 Prague, Masurische See, Italy. 



Vegetative form: Thelohan does not describe. 



According to Wegener, white cysts, elongated oval; 2mm. by 0.5mm. 

 in size. Polysporous. 



Spore: Thelohan described as follows: Flattened elliptical, rather 

 elongated. Sutural edge broad without any folds. Shell with no marking. 

 Form of the spore somewhat variable. Two polar capsules of equal size, 

 capsulogeneous nuclei present even when fully grown. Abnormal spores 

 are of frequent occurrence. Dimensions: length 12 to lAfi, breadth 9 to 

 ll/i, length of polar capsule 4/x. 



Wegener's form: length 14 to 15/i, breadth 10 to ll/t, polar capsule 

 4 to 5n by 3fi. Shell comparatively thick. One spore had a tail 5/i long. 



MYXOBOLUS EXIGUUS Thelohan 



