317] STUDIES ON MYXOSPORIDJA—KUDO 79 



CERATOMYXA STREPTOSPORA Davis 

 [Figs. 68 and 69] 

 1917 Ceratomyxa streptospora Davis 1917 : 229 



Habitat: Gall-bladder of Chaetodipterus faber; Beaufort (June, but 

 not in July). 



Vegetative form: Pyriform, colorless and transparent. A few conical, 

 filiform, wavelike pseudopodia at anterior end. Ectoplasm recognizable at 

 anterior end. Endoplasm finely granular, with a few, small, fat globules, 

 filled with transparent, homogeneous spherules. Size: 48 by 12^t to 60 

 by 9m. Disporous. 



Spore: Compressed valves greatly elongated, with rounded ends. 

 Sutural ridge. Polar capsules spherical. Coiled polar filament indistinct. 

 Sporoplasm finely granular, entirely filling both valves. Dimensions: 

 breadth 34 to 39)Li, sutural diameter 4^, diameter of polar capsules S/jl. 



CERATOMYXA AGGREGATA Davis 

 [Fig. 70] 

 1917 Ceratomyxa aggregata Davis 1917 : 229 



Habitat: Gall-bladder of Leostomus xanthurus, Micropogon undulatus; 

 Beaufort (July). 



Vegetative form: Form rounded to somewhat irregular in shape, rarely 

 pyriform; slowly ameboid. Body colorless and transparent. No clear 

 differentiation of protoplasm. Endoplasm finely granular, containing 

 numbers of small fat globules. Sporulating trophozoites show a tendency 

 to collect in groups composed of a large number of individuals so closely 

 associated that it is often impossible to make out the individual outlines. 

 Size of full-grown form 18)u by 14^. Disporous. 



Spore: Crescent-shaped; valves much elongated, tapering toward the 

 ends, which are compressed. Polar capsules spherical and opaque. Sporo- 

 plasm granular, situated symmetrically in the spore cavity. Dimensions: 

 breadth about 50/i, sutural diameter 6 to In, diameter of polar capsule 

 3.5/1. 



CERATOMYXA UNDULATA Davis 



[Fig. 71] 

 1917 Ceratomyxa undulata Davis 1917 : 230 



Habitat: Gall-bladder of Ancylopsetta quadrocellata Gill.; Beaufort 

 (June to August). 



Vegetative form: Pyriform, sometimes fusiform, tapering toward 

 posterior end. Movements rapid. Body colorless. Ectoplasm observable 

 at anterior part, constantly undergoes rapid, wavelike undulating move- 

 ments and extrudes fine conical or filiform pseudopodia. Pseudopodia 



