218 ILLINOIS BIOLOGICAL MONOGRAPHS [456 



EXPLANATION OF PLATE 



Fig. 54. A spore of Ceratomyxa aUenuata. After Davis (1917, Fig. 28). X950. 



Figs. 55 and 56. Spores of Ceratomyxa recurvata. After Davis (1917, Figs. 32 and 33). 



X1500. 

 Figs. 57 to 60. Spores of Ceratomyxa lunata. After Davis (1917, Figs. 34 to 37). X 1500. 

 Fig. 61. A spore oi Ceratomyxa abbreviata. After Davis (1917, Fig. 41). X1500. 

 Fig. 62. A spore of Ceratomyxa flagdlifera. After Davis (1917, Fig. 42). X1500. 

 Fig. 63. A spore oi Ceratomyxa agglomerata. After Davis (1917, Fig. 45). X1500. 

 Fig. 64. A spore oi Ceratomyxa amorpha. After Davis (1917, Fig. 47). X1500. 

 Figs. 65 to 67. Spores of Ceratomyxa monospora. After Davis (1917, Figs. 57, 56 and 55). 



X1500. 

 Figs. 68 and 69. Spores of Ceratomyxa streptospora. After Davis (1917, Figs. 59 and 60). 



X1500. 

 Fig. 70. A spore oi Ceratomyxa aggregata. After Davis (1917, Fig. 63). X1400, 

 Fig. 71. A spore of Ceratomyxa undulata. After Davis (1917, Fig, 66), X1500. 

 Figs. 72 and 73. Spores of Ceratomyxa navicularia. After Davis (1917, Figs. 69 and 68). 



X1500. 

 Fig. 74. A spore oi Ceratomyxa spinosa. After Davis (1917, Fig. 72). X1500. 



