464 INDEX 



PAGE 



MolHson Creek, British Columbia. Goodsir formation, Lower Ordovician. . 232 



Mollison Mountain, British Columbia 196 



mollisonensis, see Obolus. 



Mollisonia Walcott, new genus described 196 



classification of 154 



compared with Agnostiis and Microdisciis 196 



tentatively referred to Microdiscidse Koken 195 



thorax of, recalls Bohemilla stupenda Barrande 196 



mentioned 155 



gracilis Walcott, new species described 197 



figured, pi. 24, fig. 5 208 



compared with Mollisonia symmetrica 198 



stratigraphic position and association 152' 



f rara Walcott, new species described 198 



figured, pi. 24, figs. 6 and 7 208 



stratigraphic position and association 152 



symmetrica Walcott, new species described 196 



figured, pi. 24. fig. 3 208 



compared with Mollisonia gracilis 198 



monilifera, see Mickwitzia. 



monkei, see Stephanocarc. 



Montana, Altyn limestone, Algonkian locality I4y 40 



Dearborn River section. Lower Cambrian locality 4v 244 



geographic distribution of Dikelocephalus in 364 



locality (151) of Dikelocephalus sp. undt. (footnote) 391 



occurrence of Olenopsis in 240 



sea, discussed 3 



Monte Cristo mine, locaHty (20b) of Saukia coloradocnsis 277 



mantis, see Agnostus. 



Mooers, Clinton County, New York, trails from 286 



Moose Creek Valley, British Columbia, Goodsir formation. Lower Ordo- 

 vician 231-234 



Moose Pass, Robson Peak district, locality described 329 



illustrated, text fig. 11 330 



Moose River (=r East Branch Moose River) 331 



mooscnsis, see Lingulella. 



Morgans Creek, Texas, Upper Cambrian locality 70a near 359 



Morrison formation, Darton cited on 7 



mosia, see Lingulella. 



Mount Bident, Alberta 174 



Mount Carnarvon, British Columbia 189 



Mount Field, British Columbia 188 



Middle Cambrian 17-38 



and Mount Wapta, new locality 18 



Mount Fitzwilliam, Robson Peak district 340 



locality described 330 



Mount Habel, British Columbia 202 



Mount Hurd, British Columbia 186 



Mount McEvoy, Robson Peak district, locality described 330 



Mount Molar, Alberta 200 



