68 ILLINOIS BIOLOGICAL MONOGRAPHS [306 



Vegetative form: Polymorphous. Ordinarily more or less rounded, 

 with lobose pseudopodia. Pseudopodia long and often shows very active 

 movements. Endoplasm very finely granular, contains small fat globules 

 which are found in irregular mass or in a circular form. Disporous. 



Spore: Valves are short and truncate. Sporoplasm occupies the whole 

 cavity. Spores with three valves are frequently encountered. Dimensions: 

 breadth 25ju, 5ju in sutural diameter. According to Parisi, spores with two 

 shell- valves are rather few (10%), while those with three (70%) and four 

 shell-valves (20%) prevail in number! Dimensions: breadth 20 to 30ju, 

 length of the polar filament 45)u. 



CERATOMYXA RETICULARIS Thelohan 



[Fig. 28] 

 1895 Ceraiomyxa reticularis Thelohan 1895 : 337-338 



Habitat: Gall-bladder of Trachinus draco L.; Banyuls. 



Vegetative form: Extremely polymorphous. Generally spherical or 

 club-shaped. Well developed trophozoites have the similar form as in 

 C. appendiculata. Endoplasm highly reticular, with refringent fluid. 



Spore: Shell valves are short and truncate, one of which is curved to the 

 rear. Dimensions: sutural diameter 12 to 15/i, breadth 45 to 50^. 



CERATOMYXA INAEQUALIS Dofiein 



[Fig. 29] 



1898 Ceraiomyxa inaequalis Doflein 1898 : 284-285 



Habitat: Gall-bladder of Cr'enilahrus mediterraneus and C. pavo; 

 Napoli. 



Vegetative form: Form usually club-shaped. Protoplasm in active 

 motion, is differentiated distinctly into ectoplasm and endoplasm. Body 

 yellowish brown by the presence of granules in endoplasm. Inactive forma- 

 tion of pseudopodia. Ameboid movements or progressive movements by 

 means of the posterior process. Size: 20 to 40)u by 5 to 10/^ in average. 

 Length of the posterior process up to 30^. After spore formation, only 

 two nuclei remain in protoplasm, which apparently degenerate later. 

 Disporous. 



Spore: Elliptical, somewhat flattened. Massive. Very transparent. 

 Both ends round, but unequally built, i.e., one end is club-shaped. Polar 

 capsules are somewhat round and are bound to the shell by protoplasmic 

 bridges. The polar filament is not seen in fresh spores. Dimensions: 

 sutural diameter 6^, breadth 31ju, diameter of the polar capsule 2.5 to 

 3/x, length of polar filament is half breadth of the spore (diluted nitric acid). 



