W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. 227 



coactilis, Tolypothrix ... 140 



coarctata, Achnanthes ... 187 



cochleare, Ophiocytium ... 27 



Cocconeis, Genus ... ... 189 



Coelastrum, Genus ... ... 115 



ccektum, Cosmarium ... 70 



Ccelosph^erium, Genus ... 155 



Coenobieje, Sub- Family ... 115 



coeruleum, NosLoc ... ... 142 



cohferens, Chroococcus ... 157 



Cohniella, Genus ... ... 118 



Coleochfetaceao, Family ... 14 



Coleochfete, Genus .. ... 14 



Colletonema, Genus ... 180 



commissuiale, Cosmarium ... 71 

 commune, Nosloc ... ... 141 



communis, Nitzschia ... 215 



Spirogyra ... 36 



commutata, Navicula ... 166 



commutatum, Gomphonema ... 184 

 conita, Cyclotella ... ... 218 



concinnum, Xanthidium ... 68 

 condensala, Spirogyra ... 38 



SpirotiBnia ... 39 



Conferva, Genus ... .. 25 



Confervacefe, Family ... 25 



confervicola, Mischococcus ... 118 

 Confervoidese Heterogamse, Order 14 



Isogamae, Order 17 



confluens, Gloeothece 

 confusum, Cosmarium 

 Conjugatas, Order ... 

 connatum, Cosmarium 



Staurastrum 



conspersum, Cosmarium 

 constricla, Amphiprora 



Cylindrocystis 



Cymatopleura 



Nitzschia 



Surirella... 



constrictum, Cosmocladiuni .. 



Gomphonema . . 



Metidion 



Pediastrum 



construens, Fragilaria 

 contortum, Staurastrum 

 contractum, Cosmarium 

 convergens, Arthrodesmus .. 

 controversum, Staurastrum .. 

 convolutum, Rhaphidium 

 Corbula, Cosmarium 

 Cordanum, Closterium 

 Corium, Phormidium 

 Cornu, Closterium ... 

 cornubiense, Staurastrum 

 gornudamEE, Chfetophora 



152 

 75 

 31 

 87 

 96 



44 

 205 

 211 

 207 



95 

 '83 

 202 

 116 

 200 

 104 



74 

 108 

 106 

 122 



76 



51 

 147 



53 



coronatum, Gomphonema ... 184 



■ Pleurotsenium ... 58 



Coscinodiscides9, Family ... 219 



Coscinodiscus, Genus ... 219 



Cosmarioides, Staurastrum ... 103 



Cosmarium, Genus ... 68 220 



Cosmocladium, Genus ... 95 



costatum, Closterium ... 54 



costatus, Campylodiscus ... 210 



costatus, Scenedesmus ... 121 



crassa, Cylindrocystis ... 43 



Oocystis ... ... 131 



Spirogyra ... ... 38 



crassicoUe, Kuastrum ... 65 



crassinervia, Vanheurckia ... 180 



crassiusculum, Penium ... 47 



crassula, Denticula ... ... 204 



crassum, Euastrum ... ... 60 



Pleurotffinium ... 59 



crassus, Synechococcus ... 153 



Craticula, Surirella ... ... 210 



crenata, Micrasterias ... 66 



crenatum, Cosmarium ... 89 



crenulata, Melosira ... ... 217 



crenulatum, Cosmarium ... 92 



Staurastrum ... 105 



crispa, Prasiola ... ... 18 



crispata, Cladophora ... 30 



cristatum, Gomphonema .. 184 



Staurastrum ... 98 



Xanthidium ... 67 



cruciatum, Staurastrum ... 105 



Zygnema ... 34 



crucicula, Navicula ... ... 175 



Stauroneis ... 175 



cruciferum, Penium... ... 47 



Crucigenia, Genus ... ... 117 



cruentum, Porphyridium ... 156 



Crumena, Surirella ... 209 



Crustacea, Rivularia... .. 130 



Crux-melitensis, Micrasterias... 67 



cryptocephala, Navicula ... 172 



cryptoporum, OEdogonium ... 15 



CryptoraphidieJe, Order ... 216 



cubicum, Coelastrum ... 115 



Cucumis, Closterium ... 50 



Cosmarium ... 69 



Cucurbita, Ccsmarium ... 94 



cucurbitinum, Penium ... 47 



cuneatum, Euastrum ... 62 



curtum, Penium ... ... 47 



curvata, Rhoicosphenia ... 187 



curvula, Nitzschia ... ... 214 



cuspidata, Cymbella ... 159 



Navicula... ... 176 



cuspidatum, Staurastrum ... 97 



