300 



INDEX OF GENERA AND SPECIES. 



Pagft 



Macrocheilus medialis 585,46 



newboiry i 86 



palliauus 51 



pulchcllus 35 



tcxauus 258 



Macrocyclia 107 



spatiosa 107,170,221 



Macrod.iii 73, 86, 90, 117, 107 



1 85 



delicatua 64 



hamiltouEB 197 



luicronema 40 



obaoletus 69,90 



parvus 117 



tenuiatriata 51, 73 



tenuistriatua 41,85 



truncal ua 197 



Macrodontina; 34 



Macroacaphitca 104 



Macrura .37, 46, 61, 179 



Mactra 93, lOU, HI, 207, 211, 213, 215, 218, 259 



? 217 



alta 16 



arciformis 807 



? canonenaia 70, 143 



(Cymbopbora t) formosa 100 



gracilia 100 



uitidula 100 



? aiouxeriHis 100 



? utahensia Ill 



waiTenana 100 



diogoana 811, 213 



eniinonsi Ill 



formoaa 16 



gabiotenaia 217 



gibbaana 5J7, 93 



gracilia 31 



? holmeai 143 



'! incumpta 134 



luaia 5459 



potrosa 207 



• pervetus 207 



siouxensis 21 



syriaca 207 



texana 215,218 



(Trigo:iella) ? areuaria Ill 



wairenana 16 



Maoiridaj 100, HI, 134,269,271 



Mseonia 225 



axinia 225 



l cai'inata 225 



elliptica 225 



elongata 225 



fragilia 225 



gigaa 225 



gracilis 225 



graudia 225 



luyiloimia 225 



J recta 225 



valida 225 



Mtera 100 



Malca 216 



rlDgens 216 



Malletinaj 32 



Margarita 102,264 



Page. 



Margarita abyaainua 48 



niudgcana 102 



nebraaccnsia 102,264 



Margaritana 98 



nebrascensis 99, 167 



Margaritella 102 



abotti 48 



floxistriata. 102 



Marginella biplicata 221 



Maraupiocrinitea 42 • 



Marteaia 101,270 



ciiucata 101 



(Pbolaa) cretacea 270 



? roBsaleri 69 



Martinia 30, 31, 41, 44, 63, 130, 131, 155, 193 



Mattbevia 199 



variabilis 199 



Mazonia 61 



woodiana 61 



Meekclla 72,85,120,121,131,177 



slriato-coatata 72, 85, 121, 131, 177 



Meekoccras 146, 102, 239 



aplanatutn 146, 1G2, 239 



gracilitatis 146, 103, 239 



var 146, 163 



mushbacbanus 146 



mushbacbianum 162, 239 



Megalaapia 126,129 



belemnurus 126 



belemuura 129 



Megambouia 79, 194 



jameai 68, 79 



occidentalis 194 



Megaptera 56, 148 



caaei 56 



Mcgistocriuus 82,118,138,251 



craaaua 118 



ovansii 251 



farusworthi 138 



parviroatria 82 



plenua 118 



(Saccocrinus) wbitei 82 



Melanipua 158 



? 158,167 



aniericaua 166, 169 



antiquua 77, 158, 167 



? priacua 22 



Mclauia 28, 112, 137, 162 



anthonyi 16, 221 



arcta 22,221 



claibomenais 170 



convcxa 16, 17 



(Goniobaaia ?) aculptilia 65 



aubsculptilia 65 



! wy oiuiugeuaia 77 



huuicruaa 22, 221 



? inaculpta 162, 169 



inv^uuata 17 



larunda 137 



uiinutula 16, 221 



niultiatriata 16, 221 



uobraaconaia 16 



'/ uitidula 22 



oiuitta 17 



(Potodoma) veterna 2 8, 49 



