INDEX 



173 



cardinalis, 56 



divergens, 56 



gibba, 56 



globiceps, 57 



hemiptera, 57 



interrupta f. bicapitata, 57 



major, 57 



V. tranversa, 57 



mesolepta, 57 



nobilis, 57 



parva, 57 



radiosa, 54 



tabellaria, 57 



termes, 57 



viridis, 58 



V. elHptica, 58 

 Pithophora, 84 



kewensis, 84 



oedogonia, 84 



varia, 84 

 Platydorina, 72 



caudata, 72 

 Plectonema, 28 



nostocorum, 28 



tomasinianum, 28 

 Pleodorina, 72 



californica, 72 



illinoisensis, 73 

 Pleurocapsa, 19 



varia, 19 

 Pleurocapsaceae, 3, 19 

 Pleurocarpus 



mirahilis, 119, 120 

 Pleurococcus vulgaris, 155 

 Pleurosigma, 58 



angulatum, 58 



attenuatum, 52 



eximium, 52 



kuetzingii, 52 



minor, 155 



spencerii, 52 



wormleyi, 52 

 Pleurotaenium, 141 



coronatum, 141 



ehrenbergii, 141 



trabecula, 141 

 Polyblepharidaceae, 4, 69 

 Polycystis, 17 



aeruginosa, 17 



incerta, 18 

 Polyedrium 



hijurcatum, 110 



gigas, 110 



gracile, 110 



trigonum, HI 

 V. minus. 111 

 V. tetragonum, HI 

 Protococcaceae, 4, 81 

 Protococcus, 81 

 viridis, 81 

 V. gigas, 155 

 Pyrrophyta, 4, 142 



Radiofilum, 75 



irregulare, 75 

 Raphidiopsis, 30 



curvata, 30 

 Raphidium falcatum, 106 



longissimum, 106 



polymorphum, 106 

 V. contoftum, 155 

 V. sigmoideum, 106 

 Rhizochrysidaceae, 3, 36 

 Rhizochrysidales, 3, 36 

 Rhizochrysis, 36 



limnetica, 36 

 Rhizoclonium, 84 



fontanum, 84 



hieroglyphicum, 84 

 Rhizosolenia, 41 



eriensis, 41, 156 



gracilis, 41 



longiseta, 41 

 Rhizosoleniaceae, 4, 41 

 Riiizosolenineae, 4, 41 

 Rhodophyceae, 3, 30 

 Rhodophyta, 3, 30 

 Rhoicosphenia, 49 



curvata, 49 

 Rhopalodia, 64 



gibba, 64 



ventricosa, 64 

 Richteriella 



botryoides, 113 

 Rivularia natans, 30 

 Rivulariaceae, 3, 29 

 Roya, 133 



obtusa, 133 



Scenedesmaceae, 4, 1 11 

 Scenedesmus, 113 



abundans, 113 

 V. longicauda, 113 



acuminatus, 113 



acutiformis, 113 



arcuatus, 113 



V. platydisca, 114 



armatus, 114 



bijuga, 114 



