| Malacoceros (Rhynchospio) glutaeus Ehlers, 1897 |
| Malacoceros (Rhynchospio) inflatus Foster, 1971 |
| Malacoceros indicus (Fauvel, 1928) |
| Malacoceros vanderhorsti (Augener, 1927) |
| Marenzelleria Mesnil, 1869 |
| Marenzelleria jonesi Maciolek, 1984 |
| Marenzelleria viridis (Verrill, 1873) |
| Microspio Mesnil, 1896 |
| Microspio mecznikowianus (Claparède, 1870) |
| Microspio minuta (Hartmann-Schröder, 1962) |
| Microspio paradoxa Blake, 1983 |
| Microspio pigmentata (Reish, 1959) |
| Minuspio Foster, 1971 |
| Minuspio cirrifera (Wirén, 1883) |
| Minuspio cirrobranchiata (Day, 1961) |
| Minuspio delta (Hartman, 1965) |
| Minuspio fauchaldi (Maciolek, 1985) |
| Minuspio japonica (Okuda, 1935) |
| Minuspio multibranchiata (E. Berkeley, 1927) |
| Minuspio perkinsi (Maciolek, 1985) |