206 



BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



Page. 



Leptopecten 19 



Leptothyra 172 



Leucosyrinx 68 



Lima 20 



Limatofusus 95 



Limatula 20 



Limifossor 198 



Limopsis 16 



Liocerithium 148 



Liocyma 43 



Liotia 173 



Liomcsus 91 



Liriola 66 



Lirobittium 147 



Lirularia 179 



Lithophaga 23 



Litiopa 155 



Littorina 152 



Littorivaga 153 



Longchaeus 120 



Lora 73 



Lottia 171 



Luca<pinella 185 



Lucina :__ 35 



Lticinisca 35 



Lucinoma 35 



Lyonsia 26 



Lyonsiella 2S 



Machaeroplax. 



Ma coma 



Macron 



Mactra 



Mactromeris— 



Mactrotoma 



Malletia 



Mangilia 



Mantellum 



Marcia 



178 



46 



S9 



51 



„ 51 



51 



14 



79 



20 



.1 42 



Margaritcs-. 17S, 180 



Margaritopsis : 181 



Marginella 85 



Marscnina 167 



Martesia 56 



Megalomphahis 166 



Megatebennus 185 



Megathura 1S5 



Megauoldla 13 



Melampus 60 



Melanella 117 



Melaraphe 153 



Menestho 130 



Merisca 45 



Page. 

 1 86 



50 



144 



46 



88 



149 



93 



60 



32 



32 



130 



87 



87 



21 



45 



21 



91 



___'„ 174 



69 



195 



!___ 127 



106 



23 



52 



23 



29 



27 



21 



163 



, 64 



56 



65 



Nematomenia , 199 



Neosimnia 139 



Neptunea 109 



Ncttastomella , 56 



Neverita 165 



Niso 120 



Nitidella 104 



Nitidoscala ,__: 115 



Nodiscala 114 



Nodulus , 157 



Norrisia 174 



Nucella 111 



Nucula 9 



Nuttallia 50 



Nuttallina 189 



Odostomia . 128, 137 



Oldroydia - 187 



OlivcUa 85 



Omphalitis 17 5 



Merovia 



Mesopleura^^ 



Metaxia 



Metis 



Metzgeria 



Micranclluiii^ 

 Micro fustis*^ 

 MicroglypMs_ 



Milncria 



MiodontiscttS- 



Miralda 



Mitra 



Mitromorpha . 



Modiolus 



Moerclla 



Monia 



Mohnia 



Molleria 



Moniliopsis-- 



Mopalia 



Mormula 



Murex 



Mtisculus 



Mya _. 



Myoforceps^- 



Myonera 



MytiMmeria.— 

 Mytilus 



Natica 



Navanax-. 



Navea 



Neaplysia- 



