SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



Paradoxidcs — Continued. page 



vermontana Barrande, in synonym}^ 265 



Billings, in synonymy 265 



Emmons, in synonymy 265 



zualcotti Slialer and Foerste, in synonymy 341 



Paradoxides (Gen. ?) kjerulii Matthew, in synonymy 289 



Paradoxinse, Beecher on the 314 



Emmons, in synonymy 311 



Ford, in synonymy 286 



distinguished from the Mcsonacid:c 250 



mentioned 236 



transition from Mesonacidre 253 



Parkers quarry, fossils from 339, 341 



Peach, B. N.. acknowledgments 235 



bibliographic reference 376 



on OlencUoidcs 347 



on the telson of Oloicllus 313 



mentioned 342 



Peach, B. N., and Home, J., bibliographic reference 376 



Peachella, new genus 342 



delimitation of genus 248 



development of, shown in diagram 249 



development of thorax 245 



mentioned 236 



new genus, species referred to the genus listed 232 



stratigraphic distribution tabulated 251 



iddingsi ( Walcott) 343, pi. 40, figs. 17-19 



associated fossils listed 345 



compared with Callavia broggeri 344 



Olcncllus ? argcntus 315 



Olencllus canadensis 343 



Olencllus frcmonti 343 



JVanncria gracilc 343 



mentioned •. 248, 285 



stratigraphic distribution tabulated 251 



Perkins, Prof. George H., acknowledgments 235 



pcrugata, see Kutorgina. 



Pioche, fossils from 285, 322, 329, 345 



Pioche formation, fossils from 322, 329, 345 



Platyccras primccvum, mentioned 341 



Pompeckj, J. F., bibliographic reference 377 



Popes Peak, fossils from 319, 330 



Pre-Cambrian life, absence of traces explained 252 



evolution of 252 



primcEvum, see Platyccras. 



Proparia, genal spines of 237 



Prospect Mountain, fossils from 322, 323, 345 



Prospect Mountain formation, fossils from 322, 323, 345 



Protolciius fauna discussed 254 



