INDEX OF GENERA AND SPECIES. 



301 



Page. 



Melania ? sculptilis 112, 1B6, 170 



simpaoni JJsJ, 221 



sablacvis 17,221 



? sabsculptilia 163, 166, 170 



BTibtortnosa 17,221 



taylori 166, 170 



tenuicarinata 17,221 



warrenana 17 



wyomingonsis 162, 169 



Molaniiilae 112, 135 



Melanopsis 166 



McleagrineUa 8C7 



abnipta 267 



Melina montana 50 



torta 50 



Melinia uitidula 221 



Melininse 29, 32 



Mellita texana 5S15 



Melonites 23 



dansB 83 



multipora 43, 60, 212 



MeDetns 34, 106 



Menocephalns 9SO 



Meretrix 211,212, 213,214 



califomiana ail, 213 



dariena 212, 214 



decisa 50,811,213 



tularana — 81 1 , 213 



unioraeris 50, 21 1, 213 



nvasana 811, 213 



Merista 57 



liBvis 57 



Meristella 56,80,193 



Meristella ? (Meristina) cylindrica 80 



(Whitfieldia) nasuta 193 



Merocriuus 187 



corroboratns 188 



typus 187 



Merostomata 61, 179 



Mesalia lOJ 



kansasensis 102 



striata 221 



Mesodesma 137 



bishopi 137 



Mesonacis 199 



Mesorhytis 103 



Metaptera 105 



Metis 100 



Metoptoma 40, 60, 186, 188, 191, 195, 197 



? analoga 191 



billingsi 188 



comuta forme 186 



? devonica 195 



peroccidons 197 



pliiUipsi 191 



(Platyceras) umbella 40 



?umbella 60 



Michilinia 165,177,223,235 



? 235 



eugenese 177 



expansa 165 



placenta 165 



Micrabacia 96 



americana 96 



Microcyclus 58 



Page. 



Microcyclns discus 58 



Microdibcns 198 



dawsoni 198 



punctatus 198 



Microdoma 40, 87 



conica 40, 87 



Microdon 194_ 197 



(Cypricardella) connatns 197 



macrostriatu.s 194 



Micromeris minatissima 220 



parva 220 



Micropurgus minutulus 221 



Microstizia 90 



millepnnctata 96 



Micropyrgus 107, 162 



minutulus 107, 162, 169 



Milthea 99 



Mitra costata 221 



flemingii 221 



fussoides 221 



lineata 221 



mininia 221 



mooreana 221 



Mnestia 101 



Modiola 28, 73, 197, 211, 213, 267, 270 



attenuata 47 



(Brachydontes) multilinigera 76 



burlingtonensis 867 



concentrica-costeUata 47 



contracta 50, 81 1, 213 



cretacea 47 



ducatelli 50 



granulato-cancellata 47 



johnsoni 870 



Julia 47 



Julia 267 



(Lithodomns?) inflata 870 



nieekii 47 



? nevadensis 197 



ovata 270 



pedemalis 47 



(Pema)formosa 88, 49 



pertenuis 49 



saffordi 47 



spiniger 50 



? subelliptica 73 



( Volsella) subimbricata 80 



Modiolaria 98 



Modiolopsis 38, 54, 58, 130, 187, 190 



(?) 130 



acntifrons 884 



arcodes 884 



cancellata 187 



inibricata 884 



modiolaris 232 



modioliformis 54 



occidens 191 



orthonata 54 



perovata 38, 58 



plioladiformis 838 



pogonipensis 191 



prairupta 884 



siliqiia 884 



simplex 884 



subnasuta 64, 91 



