130 



INDEX 



Page 



robusta, Bradoria -- 6,7,22,108 



longula, Bradoria 7,24,109 



robusta, Indiana? 22 



Tobustus, Aparchitest 22, 108 



rotundata, Aluta - --- 60, 120 



rotundata, Aristozoe 60 



rotundata, Beyrichona 6,46,116,117 



rugosa, Leperditia'!? - 22,108 



rugulosa, Bradoria. 6,7,21,108 



rutellum, Beyrichona 6,48,11 



rutellum, Escasona 42,48,108 



Schizodiscus I 



Schmidtella - 12 



acuta 19,20 



cambrica -- 28 



Schmidtella per vetus.., 6,27,108 



Schmidtella'! pervetus mut concinna 28 



scitula, Walcottella 34,112 



scrutator, Bradoria 6, 12, 14, 108, 1 10 



scrutator, Bradoria 18 



secunda, Aparchites 71 



secunda, Indiana 6, 71, 122 



Sellula 4,49 



faUax 49, 118 



Shafleria -. 5 



sigillata, Lepiditta 6,96,115,118 



simplex Uoydiana, Primitia 103 



milneana, Primitia 103 



sanctojohannesiana, Primitia 103 



solitaria, "Leperditia" -. 102 



solvensis, Indiana? -- 83,123 



solvensis, Leperditia _ 83 



Primitia 83 



spectator, Bradoria... 6,7,25,108 



spinosa, Bradoria 6,7,26,108 



spectator, Bradorona 25 



acuta, Bradorona 19,20 



aequata, Bradorona 26,108 



spinosa, Bradorona.. 26 



steadi, Bradoria .- 29,108 



steadi, Leperditia 29 



stereope, Aluta 55,120 



stereope, Bradoria 55 



suberecta, Indiana 74,123 



Bubquadrata, Bradoria 7,20,110 



Page 



subtruncata, Walcottella 41,114 



sweeti, "Isochilina" 102,125 



tatei, "Leperditia" 101,125 



Technophorus 4 



thecoides, Modiolopsis 102,108 



tinea, Beyrichona 6,43,116,117 



planata, Beyrichona 6,45,116,117 



triangula, Beyrichona 6,44,116,117 



tontoensis, Bradoria... 24,111 



triangula, Beyrichona 43,44 



triceps, Beyrichia 46 



triceps, Beyrichona 6,46,116 



troyensis, Aluta 58, 120 



troyensis, Aristozoe 50,55 



troyensis, Fordilla 96,113 



troyensis, Leperditia S8 



Tuzoia 5 



ventricosa, Isochilina. 100 



ventricosa, Leperditia 6,100,119 



ventrosa, Walcottella 41,114 



vermontana, Nothozoe? 89 



vetus, Escasona 48,108 



vexata, "Leperditia" '102 



vigilans, Bradoria 17,27 



vigilans, Bradoria 6,7,16,108 



concentrica, Bradoria 6,17,111 



vigilans obesat , Bradoria 27 



Walcottella 4,12,31 



apicalis 33,112 



breviuscula 34, 112 



concentrica 34, 112 



leperditoides 37,112 



limatula 40,114 



longula 42, 114 



nitida 37, 113 



oblonga 38,114 



obsoleta 39, 113 



pulchella 36,113 



scitula 35,112 



subtruncata 41, 114 



ventrosa 41,114 



Waptia 5 



woodi, Aluta 56,120 



woodi, Bradoria 56 



Yohoia 7 



U. S. GOVERNMENT PRINTING OFFICE: 1931 



