300 Bulletin 39 473 



quadrata 71 



rubella 70 



stellata 70 



Mao Clay 193 



Margarita filosa 154 



Marginella apicina 77 



aureocincta 79 



avena 10 80, 188, 190, 269 



carnea 77 



cassis 77 



collina 10 269 



coniformis 268 



conoidalis 78 



denticulata 78 



fusina 79 



gutanensis 186 



hadria 80 



lacrimula... 81 



latissima 268 



leander 9 270 



macdonaldi g 187, 267 



mindiensis 9.. 268 



minima 79 



minuta 79 



musacina zj 270 



oblonga 80 



opalina 78 



ovuliformis 80 



pellucida 78 



var. pilsbryi 13 268 



rostrata 80 



seminula 80 



storeria 77 



succinea 79 



virginiana 78 



watsoni 78 



yucatecana 80 



Marsenina ampla 151 



Martesia recurva 2 19 



Mathilda yucatecana 135 



Meioceras deshayesi 131 



nitidum 132 



undulosum 132 



Melampus bidentatus 55 



biplicatus 56 



bulloides 56 



cironulus 55 



coffeus 54 



var. gundlachi 55 



coniformis 54 



corenatus , 55 



crosseana 56 



flavus 55 



floridanus 55 



hemphilli 56 



jaumei 56 



lineatus 55 



torosa 55 



Melanella bilineata 106 



conoidea 105 



fusus 106 



gibba 105 



gracilis 105 



hemphilli 106 



intermedia 105 



jamaicensis 105 



subcarinata 105 



Melongena consors /^...i95, 200, 

 284 



corona 86 



melongena 87, 200, 284 



Meretrix dariena 404 



ripleyana 25 



Mesalia alabamiensis 26 



pumila 26 



watsonensis 26 



Mesodesma costaricensis j/ 437 



Mesorhj'tis .84 



Metis barba 32 427 



Metula cancellata /j 195, 200, 



287 



gabbi IS 287 



harrisi /j 288 



var. limonensis /j 288 



Mexican Miocene 200 



Microdrillia rostratula 7 



