INDEX 457 



Hyolithes — Continued. page 



carinatus, stratigraphic position and association 210 



communis emmonsi, mentioned 341 



degeeri Holm, mentioned 264, 292 



sp. undt., stratigraphic position and association. . .178, 180, 182, 183, 188, 

 193, 194, 195, 196, 197, 198, 205, 209, 210, 211, 212, 213, 214, 215 



Hypostoma, maculae on 240-241 



of the Mesonacidae discussed 243 



visual organs on 240-241 



Hysterolenus, compared with Albert clla 19 



Idaho, relative position and thickness of Cambrian formations in south- 

 eastern part 6 



idahoensis, see Acrotreta and Zacanthoides. 



idahoensis alta, see Acrotreta. 



idahoensis st^lcata, see Acrotreta. 



iddingsi, see Peachella and Olencllus. 



Illcenurus, stratigraphic position and association 175, 177, 192, 204, 205 



Inarticulate Brachiopoda, defined 157 



inUatus, see Neolenus. 



insignis, see Trematobolus. 



intermedins, see Neolenus and Olenellus. 



intermedins pugio, see Neolenus. 



interpalpebral ridge, defined 346 



Inyo County, California, fossils in 81, 99, 323 



inyoensis, see Wimanella. 



Iphidella, see Micromitra (Iphidella). 



Iphidella major Walcott, in synonymy 60 



iphis, see Obolus (Westonia). 



Island of Orleans, fossils from 339 



Isoxys argentea, stratigraphic position and association 196, 209 



isse, see Lingulella. 



Italics, explanation of, in localities 54 



Jamesella, see Nisusia (Jamesella). 



jamesi, see Orthis. 



Johnson, W. D., acknowledgments 173 



kanabensis, see Nisusia (Jamesella). 



Karlia stephenensis, stratigraphic position and association 211 



Keedysville, fossils from 340 



kempanum, see Trematobolus. 



Kenlochewe, fossils from 324, 2,2,2, 336, 342, 350 



Keyserlingia, classification of 142, 146 



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



Kicking Horse Pass, fossils from 317 



King, William, bibliographic references 162 



terminology of 154 



terminology for Atremata and Neotremata adopted 153 



kingi, see Ptychoparia. 



Kingston Range, fossils from 323 



Kintla uplift, mentioned 191 



