303] STUDIES ON MYXOSPORIDIA—KUDO 65 



less granular and more transparent than ectoplasm, containing numerous 

 large, yellow, fat globules, which are abundant in large forms. Diameter 

 up to 24/1. Disporous. 



Spore: Elliptical in front view; valves slightly tapering but rarely 

 alike. Sutural line forming a sinuous ridge. Polar capsules open at some 

 distance from the anterior margin. Sporoplasm nearly filling both valves. 

 Free spores are often seen to remain united at the sutural line. Dimensions: 

 sutural diameter 9 to lO/x, breadth 16 to 18/i; diameter of polar capsule 3ju. 



LEPTOTHECA GLOMEROSA Davis 

 [Fig. 15] 

 1917 Leptotheca glomerosa Davis 1917 : 223 



Habitat: Urinary bladder of Paralichthys albiguttus; Beaufort. 



Vegetative form: Rounded or somewhat irregular in shape, with short 

 lobose pseudopodia. Body transparent and colorless. Ameboid move- 

 ments slow. Ectoplasm hyaline, forming a distinct outer layer. Endo- 

 plasm finely granular, with numerous small fat globules varying in size. 

 Almost entire body is used for spore formation. Diameter of rounded 

 sporulating trophozoite about 11/tt. Disporous. 



Spore: Approximately cylindrical; valves rounded at ends. The coiled 

 polar filament not visible in the polar capsule. Sutural line at right angles 

 to the longest diameter. Sporoplasm finely granular, fills the extracapsular 

 cavity of spore. Dimensions: sutural diameter 4.5/i, breadth 9^, diameter 

 of polar capsule 2/i. 



Genus CERATOMYXA Thelohan 



1892 Ceratomyxa Thelohan 1892 : 169, 171, 175 



1895 Ceratomyxa Thelohan 1895 : 334 



The characters of the genus described on page 56. 

 Type species: Ceratomyxa arcuata Thelohan. 



CERATOMYXA ARCUATA Thelohan 



Habitat: Gall-bladder of Pagellus centrodontus C. et V., Crenilahrus 

 melops L., Motella tricirrata Bl., Ophidium vasalli, Gobius paganelliis L., 

 Eeliases chromis Gthr. ; Scorpaena scrofa L., S. porcus L. ; France (Marseille, 

 Banyuls, Concarneau, Roscoff), Italy (Napoli, summer), Monaco (May). 



