| Laonice pugettensis Banse & Hobson, 1968 |
| Laubieriellus Maciolek, 1981 |
| Leucodore G. Johnston, 1838 |
| Leucodore ciliatus G. Johnston, 1838 |
| Leucodore socialis Schmarda, 1861 |
| Lindaspio Blake & Maciolek, 1992 |
| Lindaspio dibranchiata Blake & Maciolek, 1992 |
| Malacoceros de Quatrefages, 1843 |
| Malacoceros (Malacoceros) de Quatrefages, 1843 |
| Malacoceros (Malacoceros) indicus (Fauvel, 1928) |
| Malacoceros (Rhynchospio) Hartman, 1936 |
| Malacoceros (Rhynchospio) glutaeus Ehlers, 1897 |
| Malacoceros (Rhynchospio) inflatus Foster, 1971 |
| Malacoceros indicus (Fauvel, 1928) |
| Malacoceros vanderhorsti (Augener, 1927) |
| Marenzelleria Mesnil, 1869 |
| Marenzelleria viridis (Verrill, 1873) |
| Microspio Mesnil, 1896 |
| Microspio mecznikowianus (Claparède, 1870) |
| Microspio pigmentata (Reish, 1959) |