280 



INDEX. 



diplospora, Cyliiidrocystis, I 11, 61 ; 

 V 260, 266 



- var. major, I 61 

 diplosporum, Cosmarium, V 256 



Penium, I 61 



diplosporus, Calocylindrus, I 61 

 directa, Arthrodia, I 127 

 directum, Closterium, I 127 

 discretum, Cosmarium, 111 165 



Dysphinctium, III 165 

 dispar, Phycastrum, IV 187 



Staurastrum, IV 187 

 disputatum, Staurastrum, IV 176 



- var. extensum, IV 177 



- f. minor, IV 176 



- var. sinense, IV 176 

 disticha, Ursinella, III 215 

 distichum, Cosmarium, III 215 

 Distribution of Desmids, I 12 

 dissiliens, Gloeoprium, V 229 



- Hyalotheca, I 14 ; V 229 



- f. bidentula, V 232 



- f . circularis, \ 232 



- var. hians, V 234, 237 



- var. major, V 232 



- var. minor, V 232 



- var. tatrica, V 234, 237 



- f. tridentula, V 233 



- f. triquetra, V 233 

 divaricata, Helierella, II 42 

 divaricatum, Euastrum, II 42 

 docidioides, Cosmarium, V 268 

 Docidium, I 3, 9, 24, 193 

 doliforme, Cosmarium, III 49 

 doliolatum, Closterium, I 121 

 Donardense, Staurastrum, IV 169 

 dorsideiitiferum, Staurastrum, V 171 

 Double zygospores, 111 

 dovrense, Cosmarium, III 144 

 dovrensis, Ursinella, III 144 

 Duacense, Staurastrum, V 116 

 dubium, Euastrum, II 43 



var. anglicum, II 44 



- var. cambrense, II 45 

 var. Snowdoniense., II 45 



- Staurastrum, V 112 

 Dysphinctium, I 24 ; II 126 



eborafen.se, Arthrodia, 1 140 



- Closterium, I 140 



- var. achillense, V 262 

 ( 'osmarium, IV 8 



- Staurastrum, V 137 

 eboracensis, Spirotsenia, 1 42 

 echinatum, Staurastrum, A" 56 

 erhiiiodermum, Staurastrum, V 79 

 educta, Ursinella, 111 261 



eductum, Cosmarium, III 261 



var. angustatum, III 266 

 Ehreiibergiaiium, Phycastrum (Pachy- 



actinium), V 173 

 Ehrenbergii, Arthrodia, I 144 



- Closterium, I 10, 14, 143 



- var. Malinvernianum, I 145 



Docidium, I 205 



var. elongatum, I 207 



- var. granulatum, I 207 



- var. tumidum, I 206 



Penium, I 205 



Pleurotaenium, I 205 



- var. elongatum, I 207 



- var. granulatum, I 207 



- var. undulatum, I 207 

 Xanthidium, V 173 



elegans, Arthrodesmus, IV 110 



- Cosmarium, II 48 ; III 20 

 Didymidium (Euastrum) II 48 

 Euastrum, II 48 



- var. bidentatum, II 39 



- f. declivis, II 48 



- var. inerme, II 24 



- var. lobulatum, II 43 



- var. Lundellii, II 48 



- var. Nova3-Semlice, II 49 



- var. ornatum, II 50 



- var. ornithocephalum, II 50 



- var. pseudelegans, II 49 



- var. rostratum, II 35 



- var. speciosum, II 39 



- var. spinosum, II 38 



- var. typicum, II 48 

 elegans, Genicularia, 1 36 



Helierella, II 48 



Heterocarpella, II 48 

 elegantissima, Pleurotwniopsis, IV 40 

 elegaiitissimum, Cosmaridium, IV 40 



- Cosmarium, IV 40 



- f. minor, IV 41 

 Elfvingii, Cosmarium, III 56 



- var. altius, III 56 

 var. saxonicum, III 56 



cllij)soidea, Ursinella, II 172 

 elUpsoideum, Cosmarium, II 167, 172 

 ellipticum, Euastrum (Cosmarium), 

 IV 7 



- Spondylosium, V 222 



- Staurastrum, IV 138 

 elobatum, Euastrum, II 54 

 elongatum, Docidium, I 104 



- Staurastrum, I 14 ; V 156 

 emargiriato-constrictuii), Cosmarium, 



III 189 

 Endlicheriana, Palmoglcea, I 56 



- Mesotaaiimn, 1 56 



var. caldariorum, I 53 



