230 BULLETIN OF THE BUREAU OF FISHERIES. 



Ceratomyxa undulata, n. sp. (PI. xx, fig. 65, 66.) 



Trojyhozoite. — Vegetative trophozoites colorless, pyriform, sometimes fusiform, tapering rapidly 

 toward posterior end (fig. 65). Progressive movements rapid. Ectoplasm distinct at anterior end and 

 extending along the sides from one-third to one-half distance to posterior end, gradually growing thinner 

 until it entirely disappears. Ectoplasm constantly vindergoing rapid, wavelike undulating movements 

 and extruding fine conical or filiform pseudopodia. Pseudopodia form very rapidly and varj' greatly in 

 lengtli. After reaching a considerable length the pseudopodia usually travel posteriorly along sides 

 of body for some distance and then disappear. Endoplasm very transparent, often indistinctly vacuo- 

 lated ; containing numerous small fat globules distributed at random. Sponilating trophozoites usually 

 fusiform, sometimes pyriform. 



Average lengtli of full-grown trophozoites about 25/j, widtlx 10-12^. 



Disporous. 



Spore. — Crescent-shaped, slightly asymmetrical, one valve being somewhat longer and more conical 

 than the other; valves cylindrical, not compressed, ends rounded (fig. 66). Capsules convergent, 

 opening on capsular side. Coiled filaments distinct. Sporophism distinctly granular, unsymmetrically 

 situated, sometimes being almost confined to more conical valve ; in such cases the other valve collapses 

 so that walls of opposite sides are in contact. 



Length of spore 22-24^, widtli about 6;t<; diameter capsules 3^- 



Habitat. — Common in the gall bladder of Ancylopsetia quadrocellata during June, July, and August. 



Ceratomyxa navicularia, n. sp. (PI. xx, fig. 67-70.) 



Trophozoite. — Vegetative trophozoites colorless, rounded or slightly irregular in shape, never pyri- 

 form. Very slowly amoeboid. No distinct ectoplasm. Entire trophozoite finely granular; a few 

 small fat globules present. Nearly entire trophozoite is used up in the formation of spores (fig. 67). 



Diameter of sporulating trophozoite about i-jn. 



Disporous. 



Spore. — Shows considerable variation in shape and size. Symmetrical or asymmetrical, often boat- 

 shaped, slightly compressed parallel to longitudinal plane, ends of valves rounded. Capsules small, 

 convergent, opening on capsular side. Coiled filaments very indistinct. Sporoplasm finely granular, 

 extending into both valves, but usually somewhat farther into one than the other. 



Average length of spore about i6m; extreme variations observed i4-22,u; average width about 6m; 

 extreme variations observed 5-7. Sm; diameter of capsules 2n. 



Habitat. — Not uncommon in tlie lu-inarj- bladder of Paralichlhys dciitatus and P. albiguttus during 

 Jtuic, July, and August. Also found in the urinary bladder of Sphccroides maculatns taken August 2, 



Ceratomyxa spinosa, n. sp. (PI. xx, fig. 71; pi. xxr, fig. 72.) 



Trophozoite. — Vegetative trophozoites colorless, transparent, rounded or slightly irregular in shape, 

 with short, lobose pseudopodia; slowly amoeboid. Ectoplasm forming a distinct hyaline layer around 

 entire trophozoite. Endoplasm indistinctly granular, with numerous small fat globules. During 

 development ends of spores are folded along postcapsular side (fig. 71). 



Monosporous and disporous. 



Spore. — Very characteristic. Central portion greatly enlarged; ovoid, with very long tapering 

 processes extending out from each end (fig. 72). Sutural plane perpendicular to longitudinal axis. 

 Capsules large and conspicuous; spherical, opening at some distance from capsular margin. Coiled 

 filaments indistinct. Sporoplasm finely granular, chiefly located in one valve, extending into the 

 other only a short distiuice beyond the capsule. 



Length of spore about Som; length of enlarged central portion about 13^; width i/jl, diameter of 

 capsules 4^. 



Habitat. — Found in the urinary bladder of Paralichthys albiguitus. Rare. 



