PAGE 



Middle Cambrian locality i 224 



localities 4g, 1 12a 180 



localities sf, 58 185 



locality 14s 225 



localities i6d, 89X, 90, 95, lojd 178 



localities 31c, 52a, 540 187 



locality 35k 226 



locality 55s 188 



localities 74, 746 184 



locality 90X 178, 206 



locality 112 178, 180 



localities 141, 30911 181 



locality I59f 186 



Millard County, Utah, generic name Millar dia from 164 



Millar dia, new genus, described 163 



association 161 



compared with Dresbachia . 164, 167 



Menomonia 164 



genotype, Millardia semele Walcott 164, 166 



geographic distribution 164 



observations 164 



referred to Menomonid?e 161 



stratigraphic range 164 



avitas, new species, described 165 



figured pi. 28, figs. 5, 5a-c 238 



compared with Millardia optata 165 



formation and locality 165 



optata (Hall) , described 165 



figured pi. 28, figs. 4, 4a-/ 238 



compared with Dresbachia amata 167 



Millardia avitas 165 



Millardia semele 165, 166 



formation and locality ." 165 



semele, new species, described 166 



figured pi. 28, figs. 3, 30-0 238 



compared with Millardia optata 165, 166 



Minneiska, Minnesota, Upper Cambrian locality 99 190 



Minnesota, Dresbachia in 167 



Lonchocephalus in 189 



Menomonia in, Upper Mississippi Valley 162 



Upper Cambrian locality 84 163, 165, 167, 192, 193, 209, 219 



Upper Cambrian locality 84a 167 



localities 97, 339g I99 



locality 98a ' 198 



locality 99 190 



locality 339^ I95 



minor, see Conocephalites, Karlia, Lonchocephalus, and Ptychoparia. 



minuta, see Ptychoparia. 



minutus, see Conocephalites, Lonchocephalus, and Ptychoparia. 



Moberg, Joh. Chr., acknowledgment 175 



II 



