343] STUDIES ON MYXOSPORJDIA—KUDO 105 



SINUOLINEA CAPSULARIS Davis 

 [Figs. 214 to 216] 

 1917 Sinuolinea capsularis Davis 1917 : 233 



Habitat: Urinary bladder of Paralichthys albiguttus, P. dentatus, 

 Spheroides maculatus; Beaufort (July, August). 



Vegetative form: Rounded to irregular shape. Body colorless or light 

 yellow. Progressive movements slow. Pseudopodia large branched or 

 arborescent, formed entirely of ectoplasm. Ectoplasm transparent and 

 usually granular, merging gradually with the endoplasm. Endoplasm 

 contains numberous fat globules. In large trophozoites, gemmules are 

 observed. The gemmules are more finely granular and more transparent 

 than the surrounding protoplasm aixl are practically identical with the 

 small, free trophozoites. Trophozoites containing several gemmules are 

 usually rounded and motionless and appear to be more or less degenerate. 

 Disintegration of such trophozoites were actually observed. Sporulating 

 trophozoites were rare and were never seen to contain gemmules. Size up 

 to 40ju in diameter. Disporous and polysporous(?). 



Spore: Spherical, sometimes slightly elongated. Sutural plane much 

 twisted on its axis. Sutural ridge very distinct. Polar capsules and cap- 

 sulogenous cells large occupying more than one-half of the cavity of spore. 

 Coiled polar filament distinct. Sporoplasm granular contains numerous 

 fat globules. Dimensions: diameter 12 to 14/x, diameter of polar capsules 

 4.5m, length of polar filament 50ju. 



SINUOLINEA ARBORESCENS Davis 

 [Figs. 217 and 218] 

 1917 Sinuolinea arborescens Davis 1917 : 233 



Habitat: Urinary bladder of Siphostoma floridae; Beaufort 

 Vegetative form: Rounded or irregular. Body colorless or light yellow. 

 Actively ameboid, forming large arborescent pseudopodia of ectoplasm. 

 Ectoplasm well developed, hyaline and homogeneous. Endoplasm coarsely 

 granular, sometimes containing a few fat globules. Larger trophozoites 

 are less active and the ectoplasm less distinct. In sporulating trophozoites 

 the ectoplasm may entirely disappear, the entire trophozoite consisting of 

 a coarsely granular mass. Diameter of rounded sporulating trophozoites 

 75/x. Polysporous. 



Spore: Rounded, in front view, slightly elongated in the anterior end 

 view. Polar capsules large. Sutural ridge prominent, makes a character- 

 istic S-shaped turn on the anterior end. Coiled polar filaments distinct. 

 Dimensions: length 15^, breadth 12ju, diameter of polar capsules 5/i. 



