18 



K. OK AMUR A. 



Fig. 55. Climacosphaenia moniligera Ehrenb. ? 



a : optical longitudinal section of a cell showing septum, 4 X B, 



Zeiss. 

 h : narrower end of the same. 4xE, Zeiss. 

 c : upper broader end of the same. 4 x D, Zeiss. 

 d : same as fig. c, viewed slightly obliquely. 4 x U, Zeiss. 

 e : gridle-view of another specimen. 4xE, Zeiss. 

 f: gridle-view of still another specimen showing striations. 

 4x E, Zeiss. 

 Fig. 56. AsterionellajaponicaCleve. 2 X E, Zeiss. 



a : portion of the chain, with a chromatophore in one of the cells. 

 4xE, Zeiss. 

 Fig. 57. Streptotheca indica Karsten. 4 x A, Zeiss. 



a, h : two cells of the chain, with chromatophores in the cell a. 

 4 x D, Zeiss. 



