226 SMITHSONIAN MISCELI^ANEOUS COlvLKCTIONS VOL. 53 



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longidactylus, see Eocystites. 



louise, see Micromitra (Iphidella). 



lowi, see Nisusia (Jamesella). 



major, see Orthotheca. 



Malade, Idaho, fossils near ig8 



manticula, see Lingulella. 



marion, see Billingsella. 



Marjum formation, House Range 171, 179-181, pi. 15, figs, i and 2 



marjumensis, see Acrotreta. 



mcconnelli, see Obolus. 



mcconncUi pelias, see Obolus. 



membranaceous, see Obolus. 



Menoccphahis 192, 210 



micans, see Hyolithellus. 



Mickiantzia occidens Walcott 187 



Mtcrodiscus 199, 212, 214 



Micromitra haydeni Walcott 198 



sciilptilis Meek 179, 180, 194, 195 



stuarti Walcott 197 



(Iphidella) louise Walcott 2iv5 



pannula (White) 182, 183, 184, 197, 198, 203, 210, 211, 212, 213, 215 



pannula ophirensis (Walcott) 180, 198 



(Paterina) crenistria ? (Walcott) 176 



labradorica (Billings) 213 



labradorica iitahensis (Walcott) 182, 195, 196 



prospectensis (Walcott) 189 



stissingcnsis (Dwight) 209, 21 1 



superba (Walcott) 197 



wapta Walcott 214 



sp. undt 213 



minor, see Acrothyra and Asaphiscus. 



modcsta, see Linnarssonella. 



Montana, boundar}'^ of Cambrian land area in 168 



m otitis , see Agnostus. 



Mount Bosworth section, British Columbia, correlation 171 



described 204-217 



discussion of Albertella fauna in 203 



graphic representation of 206-207 



resume of 216-217 



stratigraphic position 169 



Mount Bosworth, view of Sherbrooke ridge on pi. 19 



Mount Daly, British Columbia, mentioned 205, 208, 215 



Mount Fairview, view of pi. 22 



Mount Stephen, British Columbia, fossils on. ..209, 210, 211, 212. 213, 214, 215 

 view of pi. 21 



Mt. Whyte formation, stratigraphic position of, discussed 203 



Mt. Whyte formation, Mount Bosworth 171, 203, 212-215 



Mt. Whyte formation, near Lake Louise, view showing pi. 22 



Mt. Whyte formation, on Mt. Stephen, view showing pi. 21 



nautes, see Nisusia (Jamesella) . 



