X TABLE OF CONTENTS. 



Page. 



Odostomia (Chrysallida) fasciata 165 



helga 166 



sanctorum 167 



sapia 167 



rotundata 1 68 



deceptrix 169 



Subgenus Pyrgulina 169 



Odostomia (Pyrgulina) marginata 169 



Subgenus Egila 170 



Key to the species of the subgenus Egila . 170 



Odostomia (Egila) lacunata 170 



poppei 170 



Subgenus Haldra 171 



Odostomia ( Haldra) photis 171 



Subgenus Ividella 172 



Key to the species of the subgenus Ividella 172 



Odostomia ( Ividella) pedroana 172 



navisa 173 



delmontensis 174 



quinquecincta 174 



orariana 175 



Subgenus Miralda 176 



Key to the species of the subgenus Miralda 176 



Odostomia (Miralda) hemphilli 176 



armata 1 77 



exarata 177 



terebellum 177 



sepynota 178 



galapagensis 179 



Subgenus Ivara 179 



Odostomia (Ivara) turricula 179 



Subgenus Evalina 180 



Key to the species of the subgenus Evalina 180 



Odostomia (Evalina) americana 180 



intermedia 181 



Subgenus lolsea 181 



Key to the species of the subgenus lolsea 181 



Odostomia (lolsea) amianta •. 182 



eucosmia 183 



delicatula 183 



Subgenus Menestho 184 



Key to the species of the subgenus Menestho 184 



Odostomia (Menestho) grammatospira 185 



pharcida 185 



exara - 186 



ziziphina 186 



recta 187 



amilda 187 



callipyrga 188 



farma 188 



enora 189 



chilensis 189 



fetella 189 



hypocurta 190 



