ERRATA. 



665 ,, n ,, bottom 



read " plant " 

 "right" 

 ,, " becomes " 

 " Meyer " 

 "Meyer" 



7 



,, "Meyer" 



,, "Meyer" 



"tends" 



,, "erect" 



' ,, " macrocarpa 



,, " verum " 



,, " ovifera " 



" Ciesielski " 



d of line 

 read " on " 



,, "prevents" 

 omit "not" 



FIG. T. A, Zoospore of Hamatococcus pluvialis : Z?, Hsematococcus cell. 

 V. I 



