HOW TO KNOW THE FRESH-WATER ALGAE 



Mougeotia 



p. 94, fig. 145 

 Mougeotiopsis 



p. 96, Fig. 148 

 Pleurodiscus 



p. 94, fig. 144 

 Sirogonium 



p. 95, fig. 146 

 Spirogyra 



p. 95, fig. 147 

 Zygnema 



p. 93, fig. 142 

 Zygnemopsis 



p. 92, fig. 141 

 Zygogonium 

 p. 93, fig. 143 

 Family Mesotaeniaceae 

 Cylindrocystis 



p. 71, fig. 103 

 Genicularia 



p. 72, Fig. 106 

 Gonatozygon 



p. 73, fig. 107 

 Mesotaenium 



p. 44, fig. 46 

 Netrium 



p. 73, fig. 108 

 Roya 



p. 73, fig. 109 

 Spiiotaenia 

 p. 72, fig. 105 

 Family Desmidiaceae 

 Arthiodesmus 



p. 76, fig. 114 

 Closterium 



p. 63, fig. 86 

 Cosmarium 



p. 76, fig. 113 

 Cosmocladium 

 p. 46, fig. 50 

 Desmidium 

 p. 90, fig. 138 



Docidium 



p. 71, fig. 101 

 Euastrum 



p. 75, fig. Ill 

 Gymnozyga 



p. 90, fig. 136 

 Hyalotheca 



p. 90, fig. 137 

 Micrasterias 



p. 74, fig. 110 

 Onychonema 



p. 88, fig. 133 

 Oocardium 



p. 99, fig. 155 

 Penium 



p. 72, fig. 104 

 Phymatodocis 



p. 91, fig. 139 

 Pleuiotaenium 



p. 71, fig. 102 

 Sphaerozosma 



p. 89, fig. 134 

 Spondylosium 



p. 89, fig. 135 

 Staurastrum 



p. 75, fig. 112 

 Tetmemoius 



p. 69, fig. 99 

 Triploceras 



p. 70, fig. 100 

 Xanthidium 

 p. 77, fig. 115 



B. SUB-DIVISION CHARACEAE 



Chareae 

 Chaia 



p. 21, fig. 2 

 Nitelleae 

 Nitella 



p. 21, fig. 3 

 Tolypella 

 p. 20, fig. 1 



II. PHYLUM (DIVISION) EUGLENOPHYTA 



1. Order Euglenales Lepocinclis 



Family Euglenaceae P- 25, fig. 



Euglena Phacus 



p. 25, fig. 8 p. 24, fig. 



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