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 Pteruimmas migiilosu, (Carter) Lemni. 



read Pteromonas Takedana G. S. West. 



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

 ,, 194, line 33, for Diplosiphon read Diplosphcara. 

 ., 206, line 25, for Cli. Nordstedtii read Ch. globosum. 

 ,, 217, in description of fig. 143 /, for P. glandulifera read /'. gl-tn<lnl!ft'ri.t.m. 



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

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



