INDEX 449 



PAGE 



Dorypyge sp. undt., stratigraphic position and association. i8i, 183, 195, 197, 199 

 Dorypyge (Kootenia) dawsoni, stratigraphic position and association.... 211 

 dubia, see Lingulella and Siphonotreta. 



Dunderberg shale, new formation name proposed 184 



Dwight, W. B., bibliographic references iii, 218 



Eakles Mill, fossils from 340 



East Fork Canyon, Utah, fossils in 107 



Ebencceria Marcou, in synonymy 267 



asaphoidcs Marcou, in synonymy 270 



Eden formation, thin section of fossil from 164 



Edson, George, bibliographic reference 273 



mentioned 254 



Eichwald, C. E. von, bibliographic references 1 1 i-i 12, 161 



Eldon formation, correlated 171 



defined 3 



British Columbia, fossils in 61 



Castle Mountain, views showing pi. 20, figs, i and 2 



Mount Bosworth, section of 208-209 



Mount Stephen, view showing pi. 21 



Eldorado limestone, new formation name proposed 184 



Eliptocephalus, see Elliptocephalus. 



Elkania, classification of 142, 144 



compared with Obolus and Obohis (Fordinia) 65 



evolution of pi. 11 (pp. 140-141) 



Elkania desiderata, compared with Obohis (Fordinia) pcrfcctus 66 



mentioned 85 



Elkaniinae, classification of 142 



defined 144 



clla, see Obolus (IVesfonia). 



clla onaquiensis, see Obohis (JVcstonia) . 



Elliptoccphala Emmons 267 



Beecher, in synonymy 268 



Cole, in synonymy 267, 268 



Emmons, in synonymy 267 



Matthew, in synonymy 268 



anterior glabellar lobe in 243 



compared with Mesonacis 269 



Nevadia 256, 257 



IVanncria 298 



delimitation of genus 247 



development of, shown in diagram 249 



development of thorax in 244 



eye lobes in 239 



genal and intergenal spines in 237 



geographic distribution of 253 



mentioned 236, 245, 246, 250, 288, 309 



nature of posterior segments of 269 



segmentation of cephalon 238 



