| Melanella bermudezi Pilsbry & Aguayo, 1933 |
| Melanella conoidea (Kurtz & Stimpson, 1851) |
| Melanella eburnea (Megerle von Mühlfeld, 1824) |
| Melanella falcata (P. P. Carpenter, 1865) |
| Melanella gracilis (C. B. Adams, 1850) |
| Melanella hypsela (Verrill & Bush, 1900) |
| Melanella intermedia (Cantraine, 1835) |
| Melanella jamaicensis (C. B. Adams, 1845) |
| Melanella lastra Bartsch, 1917 |
| Melanella marviva Espinosa, Ortea & Magaña, 2006 |
| Melanella mexicana Bartsch, 1917 |
| Melanella micans (Carpenter, 1865) |
| Melanella producta (P. P. Carpenter, 1864) |
| Melanella sarsi (Bush, 1909) |
| Monogamus Lützen, 1976 |
| Monogamus minibulla (Olsson & McGinty, 1958) |
| Nanobalcis Warén & Mifsud, 1990 |
| Nanobalcis worsfoldi Warén, 1990 |
| Niso Risso, 1826 |
| Niso (Niso) Risso, 1826 |