ERRATA 



Page 96, line 36, for Mereschowsky read Mereschkowsky. 



142, to description of fig. 94 should be added 'from Oltnmnns.' 

 ,, 165, line 18, for Schwarda read Schmarda. 



,, 168, in description of fig. 97 / and J, for Pteromonas angulosa (Carter) Leinm. 

 read Pteromonas Takedana G. S. West. 



,, 169, line 5, for Chlamydomonas giganteus read Chi. gigantea. 



,, 194, line 33, for Diplosiphon read Di/plosphcera. 



., 206, line 25, for Ch. Nordstcdtii read Ch. globosum. 



,, 217, in description of fig. 143 /, for P. glandulifcra read P. glanduliferum. 



,, 219, line 14, for ' 3 to 6 nuclei' read ' 4 to 8 nuclei.' 



,, 425, line 23, for E. majus read E. major. 



