232 



YORKSHIRE NATURALISTS* UNION, 



J>age 

 Lewisii, Penium ... ... 44 



Libelhila, Penium ... ... 45 



limosa, Navicula ... ... 177 



Oscillatoria ... ... 149 



liiiea, Closteiiiim ... ... 57 



linearis, Achnanthes ... 188 



Glceothece ■.. ... 152 



Nitzschia ... ... 214 



?cenedesmus ... 120 



Stauroneis ... ... 164 



Surirella ... " ... 207 



lineatum, Closterium ... 55 



littorale, Closterium ... 53 



lobulatum, Euastrum ... 63 



. Tetraedron ... 124 



Logiense, Cosniariuni ... 71 



longata, Spirogyia ... 36 37 



longipes, Characium 119 125 



Stanraslrum ... 106 



longispina, Cerasterias ... 125 



longissinia, Closteriopsis ... 1 22 



Nitzschia ... 216 



Synedra... ... 1 98 



lubrica, Tetraspora ... ... 128 



lunaris, Eunotia ... .. 195 



lunatinii, Nephrocytivuii ... 131 



Stauraslrum ... 97 



Lundellii, Cosmariiim 

 Lunula, Closterium... 

 luridum, Phormidium 

 Lyngbya, Genus 

 Lyngbyese, Family ... 

 Lyngbyoideae, Sub-Family 

 macrandrwm, OEdogonium 

 macrococcum, Mesoteeniuni ... 

 macrococcus, Chroococcus 

 macrospermum,Cylindrospermum 

 macrosporum, Nostoc 

 maculata, Cymbella... 

 maculosa, Navicula... 

 major, Chroococcus ... 



Closterium ... 53 



Cosmarium ... 



Cylindrocystis 



Eunotia 



Lyngbya 



Navicula 



Oocystis 



Penium 



• Spirulina 



Synechococcus 



majus, Cylindrospermum 



Himantidium 



Ophiocytium... 



Malinvernianum, Closterium ... 



Cosmarium . . . 



81 82 



... 52 



... 146 



... 144 



... 144 



... 144 



... 16 



4' 

 134 

 143 

 141 

 161 



175 



158 



54 



91 



44 



192 



145 



16s 



131 



47 



151 



153 



'43 



192 



28 



51 



74 



mamillosum, Stigonema ... 139 



margaritaceum, Penium ... 46 



Stauraslrum ... 108 



margaritiferum, Cosmarium ... 71 



marginata, Polycystis ... 155 



marina, Synedra ... ... 197 



Martensiana, Lyngbya .. 144 



Mastogloia, Genus ... ... 163 



maximum, Staurastrum ... 97 



media, Nitzschia ... ... 213 



mediciana, Leptosira ... 29 



medioteve, Cosmarium ... 83 



megacanthum, Stauraslrum ... 96 



Melosira, Genus ... ... 216 



Melosireas, Family ... ... 216 



Meneghiniana, Cyclotella ... 218 



Meneghinii, Cosmarium 81 92 93 



menisculus, Navicula ... 170 



Meriani, Staurastrum ... 103 



Meridion, Genus ... ... 201 



MeridionidEe, Family ... 201 



Merismopedia, Genus ... 154 



Xlesocarpeje, Sub-Family ... 31 



mesodon, Dialoma ... ... 203" 



mesolepla, Fragilaria ... 200 



Navicula ... 169J 



Mesotiunium, (^enus ... 41 



Micrasterias, Genus... ... 65 



microcephala, Achnanthes ... 188 



Microchsete, Genus... ... 139 



micrococcum, Mesotsenium ... 41 



microporum, Coelastrum ... 115 



microscopica, Aphanothece ... 152 



microscopicum, Nostoc ... 141 

 microsphinctum, Cosmarium... 70 



Microspora, Genus ... ... 26 



Microthamnion, Genus ... 29 



minimum, Cosmarium ... 91 



Tetraedron ... 124 



minor, Aphanochrete ... 22 



Chroococcus ... 157 



Conferva ... ... 25 



Cosmarium 69 81 88 92 



Cylindrocapsa ... 17 



Euastrum ... .. 64 



Eunolia ... ... 192 



Nitzschia ... .. 211 



Tetmemorus ... 60 



minus, Chfetospheridium ... 22 



Mesotsenium . . . ... 41 



minuta, Spirotiienia ... ... 40 



Surirella ... ... 208 



minutissima, Amphora ... 159 



Nitzschia ... 213 



Synedra ... 196 



minutissimum, Cosmarium 73 91 



Triuis. Y.N.U., J901 (pub. July 1901). 13ot. Series, Vol. 



