| Scientific Name | Genus | Subfamily |
| [M] | ||
| macandrewi | Erosaria | Erosarinae |
| maculifera | Mauritia | Cypraeinae |
| mappa geographica | Leporicypraea | Cypraeinae |
| mappa mappa | Leporicypraea | Cypraeinae |
| mappa mappa f.eluceta | Leporicypraea | Cypraeinae |
| mappa mappa f.panerythra | Leporicypraea | Cypraeinae |
| mappa rewa | Leporicypraea | Cypraeinae |
| mappa rosea | Leporicypraea | Cypraeinae |
| mappa rosea f.aliwalensis | Leporicypraea | Cypraeinae |
| mappa viridis | Leporicypraea | Cypraeinae |
| margarita | Pustularia | Erosarinae |
| margarita f.africana | Pustularia | Erosarinae |
| margarita f.tuamotensis | Pustularia | Erosarinae |
| marginalis marginalis | Erosaria | Erosarinae |
| marginalis marginalis f.pseudocellata | Erosaria | Erosarinae |
| marginalis melocellata | Erosaria | Erosarinae |
| marginata albanyensis | Zoila | Bernayinae |
| marginata albanyensis f.nimbosa | Zoila | Bernayinae |
| marginata ketyana | Zoila | Bernayinae |
| marginata ketyana f.hypermarginata | Zoila | Bernayinae |
| marginata marginata | Zoila | Bernayinae |
| marginata marginata f.intermedians | Zoila | Bernayinae |
| marginata raybaudii | Zoila | Bernayinae |
| mariae | Annepona | Erosarinae |
| mariae f.suluensis | Annepona | Erosarinae |
| mariellae | Zoila | Bernayinae |
| martini | Notadusta | Cypraeovulinae |
| martini f.superstes | Notadusta | Cypraeovulinae |
| mauiensis | Pustularia | Erosarinae |
| mauritiana | Mauritia | Cypraeinae |
| microdon | Purpuradusta | Cypraeovulinae |
| midwayensis | Nesiocypraea | Cypraeovulinae |
| mikeharti | Cypraeovula | Cypraeovulinae |
| miliaris | Erosaria | Erosarinae |
| minoridens | Purpuradusta | Cypraeovulinae |
| moneta | Erosaria | Erosarinae |
| moneta f.icterina | Erosaria | Erosarinae |
| mus bicornis | Siphocypraea | Bernayinae |
| mus mus | Siphocypraea | Bernayinae |
| musumea lacrimula | Notadusta | Cypraeovulinae |
| musumea musumea | Notadusta | Cypraeovulinae |
| [N] | ||
| nebrites | Erosaria | Erosarinae |
| nigropunctata | Zonaria | Cypraeovulinae |
| nivosa | Lyncina | Cypraeinae |
| nucleus | Staphylaea | Erosarinae |
| nucleus f.madagasucariensis | Staphylaea | Erosarinae |
| nymphae | Erronea | Cypraeovulinae |
| [O] | ||
| obvelata | Erosaria | Erosarinae |
| obvelata f.nubilis | Erosaria | Erosarinae |
| occidentalis | Notocypraea | Cypraeovulinae |
| ocellata | Erosaria | Erosarinae |
| onyx | Erronea | Cypraeovulinae |
| oryzaeformis | Purpuradusta | Cypraeovulinae |
| ostergaardi | Erosaria | Erosarinae |
| ovum chrysostoma | Erronea | Cypraeovulinae |
| ovum ovum | Erronea | Cypraeovulinae |
| ovum ovum f.palauensis | Erronea | Cypraeovulinae |
| owenii owenii | Bistolida | Cypraeovulinae |
| owenii vasta | Bistolida | Cypraeovulinae |