421] STUDIES ON MYXOSPORIDIA—KUDO 183 



59(56) Trophozoite always rounded, never pyriform. Spore: sutural diameter 6n, 

 breadth 16^ 



Ceratomyxa navicularia Davis 1917 (80) 



60(55) Trophozoite polymorphous 61 



61(62) Shell- valves symmetrically built; sutural diameter 5 to 8;u, breadth 20 to 31 yu 



Ceraiamyxa arcuata Thelohan 1892 (65) 



62(61) Shell-valves often asyimnetrically built; sutural diameter 8 to 14/Lt, breadth 50 to 

 80/x 



Ceratomyxa drepanopsettae Awerinzew 1907 (70) 



Incompletely described species 



Ceratomyxa sp. (?) Awerinzew 1913 (71) 



Ceratomyxa sp. (?) Awerinzew 1913 (71) 



Ceratomyxa sp. Georgevitch 1916 (72) 



Genus MYXOPROTEUS Doflein 1898 

 1(2) Spore with two long (5 n) processes extending anteriad from sides ; sutural diameter 

 9n, breadth 12 /u 



Myxoproteus cornutus Davis 1917 (82) 



2(1) Spore without long process 3 



3( 4) Spore with two small spinous processes at anterior end; sutural diameter 

 25m, breadth 18 to 20m 



Myxoproteus ambiguus Thelohan 1895 (81) 



4( 3) Spore without any process; posterior end slightly pointed; sutural diameter 12 m, 

 breadth 10 to Um 



Myxoproteus cordiformls Davis 1917 (81) 



Genus WARDIA Kudo 1919 

 1 Spore isosceles triangular form; shell with network-like striations which end in 



fringe-like processes at posterior margin; sutural diameter 9 to lO/u, breadth 10 

 to 12m, diameter of polar capsule 4m. 



Wardia ovinocua Kudo 1919 (82) 



Doubtfully placed species 



Wardia ohlmacheri (Gurley 1894) (83) 



Genus MITRASPORA Fujita 1912 emend. Kudo 1919 



1(4) Spore with posterior filaments 2 



2( 3) Posterior filaments short (5 to 6m long) ; length 10m, breadth 8 to 9m, thickness 

 6 to 8m, polar capsule 4m by 1 .5 to 2m 



Mitraspora cyprini Fujita 1912 (84) 



3( 2) Posterior filaments of spore long (up to 28m); length 10 to 11m, polar capsule 4 to 

 4.5m long 



Mitraspora caudata Parisi 1910 (85) 



4( 1) Spore without posterior filament; anterior end slightly attenuated; posterior end 

 truncate; length 15 to 17m, breadth 5 to 6m, thickness 4.5 to 5 .5m, polar cap- 

 sule 7.5m by 2m 



Mitraspora elongata Kudo 1919 (85) 



Genus CHLOROMYXUM Mingazzini 1890 



1(4) Spore with posterior appendage 2 



2( 3) Posterior appendage fine and numerous; length 6 to 9m, breadth 5 to 6m, polar 

 capsule 2 to 3 m by 1 to 2 m 



Chloromyxum leydigi Mingazzini 1890 (87) 



Numbers enclosed in parentheses refer to the page of the article on which is found the description of the species 

 named. 



