120 ILLINOIS BIOLOGICAL MONOGRAPHS [358 



Polar filament is wound along the longer diameter of the capsule, and 

 relatively thick, but thinner than that of S. balbianii Thel. Dimensions: 

 length (along the inner side of the arch) 30 to 35/*, breadth 8/t, distance 

 between two polar capsules 12 to IS^u, polar capsules 12 to 15m by 4 to 5/i. 



SPHAEROMYXA SABRAZESI Laveran et Mesnil 

 [Figs. 315 and 322] 



Habitat: Gall-bladder of Hippocampus hrevirostris Cuv., H. guttulatus 

 Cuv.; Syngnathus acus, Motella tricirrata, Nerophis annulatus, Siphonos- 

 toma rondeletii; Arcachon, Rovigno, Napoli, Roscoff (September), Monaco, 

 Villef ranee, (March to June). 



Vegetative form: Disc form. Diameter up to 2mm. Thickness var- 

 iable. Body whitish in color. Ectoplasm thin, transparent and homo- 

 geneous. Young trophozoites may probably have lobose pseudopodia. 

 Endoplasm highly vacuolated, contains nuclei of various sizes, pansporo- 

 blasts, spores and more or less refringent granules. Polysporous. 



Schroder observed larger forms up to 5mm. Ectoplasm also was found 

 to project numerous fine short (Iju) hair-like processes from the surface. 

 Each pansporoblast develops into two spores. 



Spore: Cylindrical, bent in arch form; with truncated ends. Large 

 cylindrical polar capsule at each end. Sporoplasm granular, contains one 

 nucleus. Polar filament short and conical, is extruded under the action of 

 nitric acid. Dimensions: length 28)u, width 4.3m, polar capsule 9 to 10m 

 by 3n, distance between the polar capsules 8m, length of polar filament 8m. 



Schroder noticed the stained sporoplasm contained one or two nuclei. 

 He observed indistinctly marked longitudinal striations on the shell. 

 Dimensions: length 22 to 25m, breadth 3 to 4m, polar capsule 8m by 2 to 3m, 

 length of polar filament about 12m. 



Georgevitch described the presence of a hyaline substance, containing 

 pale granules, in the spore cavity. Young spores were found to take the 

 form of Myxidium type. In mature spores, he always found two nuclei by 

 staining. 



*Misprmted in Schroder's pap)er. 



