216 ILLINOIS BIOLOGICAL MONOGRAPHS [454 



EXPLANATION OF PLATE 



Figs. 34 to 39. Ceratomyxa drepanopsettae. Awerinzew (1908). 



Fig. 34 and 35. Trophozoites (1908, PL 2, Figs. 7 and 9). Obj. D and oc. 4. 



Fig. 36. The part of a trophozoite attached to the epithelium of the gall-bladder of the host 



1908, PL 2, Fig. 10). Obj. E and oc. 4. 

 Figs. 37 to 39. Spores (1908, PL 1, Figs. 2, 3 and 1). Obj. D and oc. 4. 

 Figs. 40 and 41. Two different views of the spore of Ceratomyxa tylosuri. After Awerinzew 



(1913a, Fig. 1). X about 350. 4 



Figs. 42 and 43. Ceratomyxa{?) spari. After Awerinzew (1913a, Fig. 2). * 



Fig. 42. A trophozoite. 

 Fig. 43. A spore. X about 345. 

 Figs. 44 to 47. Spores of Ceratomyxa acadiensis. After Mavor (1916). Figs. 44 and 45 



(1916, Fig. B). X270. Fig. 46 (1916, Fig. A) X1800. Fig. 47 (1916, Fig. 40) X2950. 

 Fig. 48. A spore of Ceratomyxa coris. After Georg6vitch (1916a, Fig. 1). 

 Fig. 49. A spore of Ceratomyxa herouardi. After Georg6vitch (1917, Fig. 1). 

 Fig. 50. A spore of Ceratomyxa mesospora. After Davis (1917, Fig. 15). X1500. 

 Fig. 51. A spore of Ceratomyxa sphairopkora. After Davis (1917, Fig. 23). X950. 

 Figs. 52 and 53. Spores oi Ceratomyxa taenia. After Davis (1917, Figs. 26 and 25). X700. 



