NO. 6 MIDDLE CAMBRIAN BRANCHIOPODA, ETC. 



PAGE 



Emeraldclla, new genus, discussed 203 



between Branchiopoda and Merostomata 163 



characterized 158 



classification of 155 



labrum of 1 58 



referred to Aglaspid?e 203 



representing Merostomata 155 



Emeraldella brocki, new species 203, pi. 30, fig. 2, and text fig. 8, p. 204 



appendages of 203 



compared with Bidcntia difUcilis 174 



compared with Emeraldella micrura 205 



compared with Opabinia rcgalis 203-204 



related to Malaria spinifera 201 



stratigraphic position and association 153 



Emeraldella micrura, new species 205, text fig. 9 



compared with Emeraldella brocki 205 



Endopodite, protopodite bearing 159 



Epipodite (gill), attached to protopodite 159 



Eurypterida, relation to Limnlava 164 



relation to Sidneyia 206 



representing Merostomata 163 



Eurypterus, compared with Sidneyia inexpectans 206 



Evolution, theoretical, of Cambrian Crustacea from Branchiopoda, table. . 164 



Exopodite, protopodite bearing 159 



swimming, of Branchiopoda Marrclla, Opabinia, and Leanchoilia . . 160 



Exoskeleton, described 157 



Eyes, Branchiopoda and Malacostraca 159 



Female of Opabinia regalis, described 169 



Field, mountain above Burgess Pass, British Columbia, Canada 188 



field ensis, see Waptia. 



Fieldia, new genus, discussed 188 



classification of 154 



Fieldia lanceolata, new species 188, pi. 32. fig. 8 



stratigraphic position and association i53 



Flabellum of Naraoia compacfa, evidence of 176 



Furcal rami on female of Opabmidse t66 



Gastropod I53 



Genera and species, new, of Trilobita, described 192 



gigantea, see Anomalocaris. 

 glacialis, see Lepidurus. 



Gneiss, kata-biotite-orthoclase, mentioned 151 



Goodrich, E. S. author of section on Holothurioidea 149 



gracilis, see Mollisonia, Pollingeria, and Selkirkia. 

 grandis, see Pollingeria and BanM. 



