302 



INDEX OF GENERA AND SPECIES. 



Page. 



Modiomorplia 1 10, 11)4, 197 



altifoiTiie 194 



aaibi(;ua 197 



? desiderata 197 



»late no 



obloDga 194 



obtasa 194 



?ovata no 



Jpiutoonsis 197 



Mollusca 24, 31, 32, 33, 38, 40, 41, 43, 44, 45, 54, 55, 56, 



57, 58, 59, 60, 61, 68, 72, 78, 80, 84, 85, 88, 90, 



91, 94, 95, 96, 105, 107, 1U8, 109, 110, 111, 112, 



118, 120, 133, 135, 136, 137, 138, 142, 144, 148, 



151, 153, 154, 155, 176, 225, 255, 260 



vera 132,133,164 



Mollu8coida3 133,165,260 



Monocpras sulcatum 222 



Monomj -aria 97, 105, 132, 133, 263, 206 



Monoploura 176 



marcida 176 



pinguiscula '. 176 



Monopteria 41, 45,127,132,178 



gibbosa 178 



marian 127, 132 



Monntis 86, 258 



? 258 



? fO'egaria 64, 86 



hawni 19,20,51 



spelnncaria 258 



Monticulipora 129, 135, 155 



dalii 129 



fiondosa 155 



monticnla 138 



Mortonia (Periarclius) crustuloides 222 



lyeUi 220 



pileus-siuensis 222 



tumida 222 



Mortooiceras 104 



shoshoneDse 104 



1 vormilionense 104 



Mulinia 215,216 



densata 215,216 



MulticostatiE 34 



Mnrchisonia 55, 74, 117, 147, 1.51, 164, 191 



bicincta 55 



copei 151 



inornata 40, 87 



msy or 2H2 



milleri 191 



nebrascensis 74 



obsolete 67 



? prolixa 117 



subtainiata 51 



terebra 147, 1C4 



Mnricida! 103 



Mya 215,216 



abmpta 205 



montereyana 215, 216 



? subsinuata 216 



tcllinoides 231 



Myacites 31, 34, 111, 164 



depres.su.s 31 



inconspicuus Ill 



nebrascensis 21, 34 



(Pleuromya) subcompressa . ...Ill, 179 



Page. 



MyaciteH (Pleuromya) woberensis Ill 



subcoiiiprcssus 164 



aubfUipticu.s 34 



Myacites unioiioides 49 



Myaliua 24, 32, 44, 45, 73, 82, 86, 132, 151 , 178, 



196, 236, 257, 259 



? 132 



angulata 24,32,44 



apachesi 243 



aviculoides 21, 32, 236 



coiicentrica 24, 44 



cougeneris 196 



' (Gervillia) pcrplana 259 



meliniformis 41, 45 



(Mytelus) porattenuata 19, 20 



nemesis 196 



nessus 196 



l)e ratten II ata 32, 51, 86 



permiana 32, 151, 236 



recta 258 



recurvirostra 24,45 



recurvirostris 178 



squamosa 20, 258 



St. ludovica 84 



subquadrata 20, 32, 51, 73, 178, 274 



swallovi 45,51,73,132,178 



Myrophoria Ill, 133 



ambilineata 133 



lineata Ill 



Myomia 224 



clongata 224 



valida 224 



My riapoda 37, 46, 61 



Myrtea 99 



Mytelus subarcuatus 16 



My t ilarca 1 94 



chemungensia 194 



dubia .. 194 



(Plethomy tilus) oviformis 1!>4 



Mytilida) 30, 33. 98, 110, 111, 260, 262, 267, 270 



Mytiloides 97 



Mytilus. ... 30, 98, 116, 164, 211, 213, 217, 260, 262, 267 



at tonuatns 15 



concavus 1 51 



ongelnianni 274 



febristiiatus 116 



humerus 211, 213 



inozensis 217 



inflatus 50 



mcehii 256 



niultistriatus 30 



occidontalis 1 16 



obliviua 267 



(Orthonota) ventricosa 116 



pedroanus 211,213 



pertenuis 18 



subarcuatus 98 



whitoi 164,260,262 



N. 



Ifaia 105 



Naiadites carbonaria 167 



elongata 167 



Irevis 167 



Naidea 105 



