528 INDEX 



PAGE 



Marsh shale, described 267 



Belt series 99 



confused by Rothpletz witli Empire shale 278 



and Cambrian Flathead sandstone, unconformity, fig. 13 286 



and Helena limestone, referred to by Rothpletz 281 



Maryville limestone. Tennessee, Upper Cambrian locality 102a 399 



Upper Cambrian locality 107 205, 215, 216, 218, 392, 398 



locality 107c 178 



117b 400 



117c, ii8a, 123b, 125, 125a, 126a 215 



ii8a 404 



119 205, 215, 218, 391. 397, 399, 401 



120 205, 215. 217. 399, 401 



123a 100 



123b 392, ,398. 399, 401 



125 398 



173 196 



Maryvillia, new genus, described 400 



compared with Blountia 400 



Tsinania 400 



genotype. Maryvillia avion Walcott 400 



provisionally referred to Ogygiocarinse 375 



arion, new species, described 400 



figured, pi. 64, figs. 4, ^a-c 450 



compared with Maryvillia ariston 401 



pygidia characterized 400 



ariston, new species, described 401 



figured, pi. 64, figs. 5, 5a 450 



compared with Maryvillia arion 401 



pygidia characterized 400 



Matherella Walcott, and Scenella, patelloid Gastropoda 58 



circc (Walcott) (= Straparollina circe), generic references 17 



listed, Ch'ang-hia 68 



stratigraphic and geographic position 46 



f sp. undt., discussed as coiled gastropod 59 



matinalis, see Obelus. 



Matson, Geo. C, cited 93 



Matthew, George F., acknowledgments 361 



cited_ on Dorypyge 326 



Ogygopsis 378 



cited 325, 372 



description of pre-Cambrian concretions 114 



matthewi, see Acrothclc. 

 mahitina, see Amphion. 

 maydeli, see Liostracus. 

 Mayer, Alfred G., cited 92 



