236 



YORKSHIRE NATURALISTS UNION. 



rectangularis, BulbochEete ... 15 



Crucigenia ... 117 



rectosporum, Cosmarium ... 78 



recurva, Mougeotia ... ... 32 



Regnellii, Cosmarium ... 93 



Regnesii, Cosmarium ... 89 



regulate, Tetraedron ... 123 



regularis, Gleeocystis ... 132 



regularium, Cosmarium ... 75 



Reinhardtii, Navicuk ... 173 



Reinschiana, Tetrapedia J ... 154 



Reinschii, Cosmarium ... 92 



Staurastrum 98 



leniforme, Cosmarium ... 71 



repens, AphanochsBte ... 14 



Herposteiron ... 22 



reticularis, Trochiscia ... 136 



reticulatum, Hydrodictyon ... 115 



Retzii, Phormidium... ... 147 



reversa, Nitzschia ... ... 216 



Rhaphidiefe, Sub-Family ... u8 



rhaphidioides, Cerasterias ... 125 



Dactylococcus... 118 



Rhaphidium, Genus .. 121 



Rhaphidonema, Genus ... 21 



Rhizoclonium, Genus ... 30 



Rhoicosphenia, Genus ... 187 



rhomboides, Vanheurckia ... 180 



rhynchocephala, Navicula ... 172 



Riehterianum, Chroothece ... 152 



rivulare, Qidogonium ... 16 



Rivularia, Genus ... ... 137 



Rivulariacese, Family ... 137 



rivulaviarum, Lyngbya ... 146 



rivularis, Aphanocapsa ... 156 



Hildenbrandtia ... 13 



Ilormiscia... ... 20 



Zonatrichia ... 137 



robusta, Eunotia ... ... 194 



Surirella ... ... 207 



robustum, Closterium ... 50 



Roesiana, Melosira ... ... 217 



rosea, Hildenbrandtia ... 13 



roseo-persicinus, Clathrocystis 155 



Rostafinskii, Cosmarium ... 84 



roslratum, Closterium ... 57 



Euastrum ... 62 



rotata, Micrasterias ... ... 66 



Rothii, QLdogonium .. 15 



rotundatum, Cosmarium ... 88 



Rotula, Cyclotella ... ... 218 



Pediastrum ... ... 117 



rolundum, Staurastrum ... 102 



Koya, Genus ... ... 48 



rufescens, Chroococcus ... 158 



Penium ... ... 44 



rufescens, Pleurococcus 

 rufopellitum, Penium 

 rupestre, Nostoc 



Phormidium 



rupestris, Epithemia 



Gfaocystis 



Lyngbya... 



Tetracyclus 



salina, Stauroneis ... 



Surirella 



Synedra 



sanguineus, Pleurococcus 

 saxicola, Aphanothece 

 saxonica, Vanheurckia 

 Saxonicum, Staurastrum 

 scabrum, Staurastrum 

 scalaris, Mougeotia ... 

 scalpelliformis, Nitzschia 

 scalproides, Pleurosigma 

 scalprum, Pleurosigma 

 Scenedesmus, Genus 



■ Cosmarium 



Schizochlamys, Genus 

 schizodermaticus, Chroococcus 

 Schizogonium, Genus 

 Schizomeris, Genus... 

 schizonemoides, Navicula 

 Schizothrix, Genus ... 

 Schliephackianum, Cosmarium 

 Sciadium, Genus 

 scita, Navicula 

 Scoliopleura, Genus... 

 scorpioideum, Staurastrum ... 

 Scotica, Encyonema 

 sculpta, Navicula 

 sculptum, Closterium 

 scutata, Coleochfete. . . 

 Scutellum, Tryblionella 

 Scytonema, Genus ... 

 Scytoneniaceos, Family 

 Sebaldi, Staurastrum 

 secedens, Spondylosium 

 Selenastrum, Genus... 

 Semen, Navicida 

 semicirculare, Staurastrum ... 

 septentrionale, Cosmariwrn ... 

 serians, Navicula 

 sericea, Vaucheria ... 

 serpentaria, Choaspis 

 sessilis, Vaucheria ... 

 setaceum, Closterium 

 setigera, BulbocliMte 

 setigerum, Rhaphidium 

 sexcostatum, Staurastrum 

 Sieboldi, Characium 

 Sigma, Nitzschia 



page 

 13s 

 44 

 141 

 147 

 192 



133 

 147 

 205 

 164 

 208 

 197 

 135 

 152 

 180 



99 

 107 



32 

 214 



183 

 182 

 119 



73 

 127 



158 

 18 

 18 

 170 

 143 

 74 

 27 



17s 

 181 

 106 



16,3 

 176 



55 



14 



212 



139 

 139 

 106 



95 

 123 

 174 

 104 



94 

 176 



tI2 



38 

 112 



';7 



15 

 122 

 108 



125 



213 



Trans. y.N.U., 1901 (pub. July 1901). Bot. Series, Vol. 5. 



