126 ILLINOIS BIOLOGICAL MONOGRAPHS [364 



Dimensions: diameter 6 to 10/*, length of polar capsule 2/5 that of the 

 spore, length of polar filament 40 to SOfi (limewater, 1% KOH). 



Remarks: Plehn noticed that the present form causes the chronic 

 form of "Drehkrankheit" among young fish in German waters. She was 

 unable to extrude the polar filament with mineral (?) acids. Auerbach, 

 however, could extrude the filament by means of acids. 



LENTOSPORA MULTIPLICATA Reuss 



[Fig. 355] 

 1906 Lentospora multiplicata Reuss 1906 : 203 



Habitat: Muscle of Idus melanotus Heck. ; Volga?, Russia. 



Vegetative form: Not described. 



Spore: Oval. Sutural edge broad with many folds. No iodinophilous 

 vacuole. Dimensions: length 12^, breadth 9.5m, thickness 6/i, polar 

 capsules 4/t by 2.25/*. 



LENTOSPORA ENCEPHALINA Mulsow 



1911 Lentospora encephalina Mulsow 1911 : 483-485 



Habitat: In the blood vessel of the brain, especially of the mid-brain of 

 Cyprinus carpio L.; Munich (spring). Blood vessels are the only seat of 

 infection. In most cases many individuals lie parallel to one another. The 

 infection occurs frequently and heavily. The effect, however, is undeter- 

 mined. 



Vegetative form: Trophozoite elongated, worm-like and circular in 

 cross section. The body is covered with a pellicula. The protoplasm is 

 distinctly differentiated into homogeneous ectoplasm layer and inner endo- 

 plasm. In the latter are found numerous granules, small nuclei and spores. 



Spore : Almost circular in front view ; profile ? No iodinophilous vacuole 

 is found. The polar filament is easily extruded by means of a highly diluted 

 KOH solution. Diameter: 5 to 5.5^. 



LENTOSPORA ASYMMETRICA Parisi 

 [Figs. 356 to 359] 



1912 Lentospora asymmetrica Parisi 1912 : 292-293 



Habitat: Connective tissue of kidney of Crenilabrus pavo C. et V.; 

 Napoli (September). 



Vegetative form: One trophozoite found; a small, rounded form with 

 thin and hyaline ectoplasm which could be distinguished from the endo- 

 plasm with coarse yellowish globules, containing two spores. Disporous? 



Spore: Oval from the front; flattened and fusiform in profile. Sutural 

 edge with many triangular folds, which are more clearly seen in material 



