SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



Olciicllus — Continued. 



canadensis — Continued. page 



compared with Olcnclhis rcticnlatus 336 



Olcncllus thoynpsniii 317, 318 



Pcachclla iddingsi 343 



eye lobes in 239 



eyes compared with those of Olcncllus logani 335 



geographic distribution of 252 



hypostoma of 244 



in synonymy 316, 325 



mentioned ^ 254, 248, 314, 328 



stratigraphic distribution tabulated 251 



claytoni, new species 319, pi. 40, figs. 9-11 



compared with Elliptocepbala asaphoides 319 



Olcncllus fremonti 319 



Olenclhis lapzuorthi 319, 320 



Olcncllus thompsoni 3^9 



Padeumias transitans 320 



Wanncria walcottanus 3^9 



mentioned 248, 314, 315 



stratigraphic distribution tabulated 251 



fremonti. new species 320, pi. 37, figs. 1-22 ; pi. 41, fig. 8 



compared with Olenellus ? ar genius 315 



Olcncllus canadensis .317. 3i8 



Olenellus claytoni 319 



Olcncllus gilberti 321-322, 329 



Olcncllus laptvorthi 322, 332 



Olenellus logani 335 



Olenellus thompsoni 322, 339 



Pcachclla iddingsi 343 



eye lobes in 239 



geographic distribution of 252 



hypostoma of 243 



compared with that of Olcncllus gilhcrti 328 



gilberti and Pccdcumias transitans 322 



in synonymy 321 



mentioned . 248, 256, 285, 300, 314, 320, 327, 345 



stratigraphic distribution tabulated 251 



? gigas Peach 323, pi. 40, fig. i 



Peach, in synonymy 32^ 



compared with Mesonacis vcrniontana 324 



Olenellus lapzvorthi 323 



Olcncllus reticulatus 223 



mentioned 248, 314, 342 



stratigrapliic distribution tabulated 251 



gilberti Meek 324, pi. 36. figs. 1-17 ; pi. 43, figs. 5-6 



Holm, in synonymy 325 



Lesley, in synonymy 321, 325 



Meek, in synonymy 324 



Peach, in synonymy 321 



