INDEX OF GENERA AND .SPECIES. 



Ill 



Pago. 



Planorbis(Bath.yoinplialus) amplexus 106, 161,169 



kauabensis-lST, 169 



plano-convpxus ..106, 



161, 169 



cirratus 159, 170 



convolutus 16, 106, 161, 169 



var 106 



f ragilia 17 



(Gyraulus) militaris 153,170 



leidyi 31, 107,170 



luuata 170 



(Menetns) nebrascensis 107 



vetustus 107 



nebrascensis 170 



spectabilis 33, 95, 112 



var. utabensis 95, 112 



subumbilicatus 16 



tenuivolvis 19" 



utabensis 33, 135, 170 



var. spectabilis 170 



vetemus 34,167 



vetulus 31 



vetustus 170 ■ 



riantas 128,259,261 



Planiilaria cuneata 47 



Platy ceras 40, 57, 59, 60, 74, 80, 84, 86, 90, 117, 



132, 149, 165, 178, 186, 194, 197 



attenuatum 67 



biserialis 60 



bivalve 117 



conradi 194 



dumosum var. attenuatum 80 



equilatera 84, 149 



fissurella 84 



haliotoides 40, 59 



infundibulum 84 



tevigatum 40 



minntissimam 186 



' mnltispinosum 67, 80 



nebrascense 132, 179 



nebrascensis 74 



nodosum 194 



occidens 197 



(Orthonychia) chesterense 40 



infundibulum . . . 40 



lodiense 67,89 



pyramidatum ... 57 



quincyense 60 



subplicatnm 40, 59 



paralium 117 



piso 197 



[?1 reversum 60 



spinigerum 86 



spirale 57 



subundatmn 57 



thetiforme 194 



tortnm 67,90 



tribulosnm 165 



nncum 40, 84 



undulatum 194 



ventricosnm 59 



Plalychisma depressnm 226 



ocnlus 226 



rotundatum 226 



Platycrinites 82,83,85 



Page. 



Platycrinites wqualis 82 



builington eu sis 82 



(Eucladocrinus) moutanaensis 71 



halli 82 



hemisphericus 83 



incomptus 83 



planus 82 



parvulus 85 



' subspino.sus 82 



tenuibrancbiatus 82 



Pl.atycrinus .23, 26, 38, 42, 43, 50, 60, 117, 118, 127, 130, 

 144, 154, 163, 165, 248, 249, 250,251 



? 127,130 



americanus 349, 251 



bonoensis 144, 105 



burlingtoiiensis 349, 251 



corrugatus 349, 251 



discoideus 349, 251 



haydeni 103 



hemispli«ricii3 .38, 60, 154 



iucomptus 117 



multibranchiatus 36 



niotensis 38, 60 



oweni 36 



parvulus 38 



penicillus 33, 44 



planus ....'. 44, 59, 349, 251 



plenus 33 



(Pleurocrinua) asper 36, 59 



subspinosus 42 



pleurovimensis 118 



prattenanus 33, 43 



quinquenodus 118 



scobina 36, 59 



verrucosus 117 



yandellii 349, 251 



Platyostoma 25,80,148,194,197 



inornatum 197 



lineatum 194 



nana 35, 27 



niagarense 148 



var. trigonostoma . . 80 



? trigonostoma 67 



Jtumida 35 



Platychisma 195 



? ambiguum 195 



?depre8sum 333 



?mccoyi 195 



pelicoides 40 



Platytrochus goldfussii 220 



atokesii 220 



Plectosolen ? diegoensia 220 



parallelus 220 



Plethomytilus 194 



Pleurocrinua 38, 42 



Plcurodictyum 57 



problematicum 57 



PlenrolimnfBa 106, 161 



Pleuromya 260, 262 



new toni 360, 262 



Pleurophoru8.32, 33, 38, 45, 61, 73, 86, 90, 151, 197, 258 



1 92 



? angulatns 38,92 



calhouni 33 



1 (cardinia) subconeata lO 



