38 Species in Family Magelonidae
| Scientific Name | Author | English Name |
|---|---|---|
| Magelona alleni | unspecified | |
| Magelona berkeleyi | unspecified | |
| Magelona californica | Hartman, 1944 | |
| Magelona capax | Hartman, 1965 | |
| Magelona cerae | Hartman & Reish, 1950 | |
| Magelona cincta | Ehlers, 1908 | |
| Magelona cineta | Ehlers, 1908 | |
| Magelona cornuta | Wesenberg-Lund, 1949 | |
| Magelona crenulifrons | Gallardo, 1968 | |
| Magelona equilamellae | Harmelin, 1964 | |
| Magelona filiformis | Wilson, 1959 | |
| Magelona gemmata | Mortimer & Mackie, 2003 | |
| Magelona hartmanae | Jones, 1978 | |
| Magelona heteropoda | Mohammad, 1973 | |
| Magelona hobsonae | unspecified | |
| Magelona japonica | Okuda, 1937 | |
| Magelona johnstoni | Fiege, Licher & Mackie, 2000 | |
| Magelona lenticulata | Gallardo, 1968 | |
| Magelona longicornis | unspecified | |
| Magelona marianae | Hernández-Alcántara & Solís-Weiss, 2000 | |
| Magelona methae | Nateewathana & Hylleberg, 1991 | |
| Magelona minuta | unspecified | |
| Magelona mirabilis | unspecified | |
| Magelona obockensis | Gravier, 1905 | |
| Magelona pacifica | Monro, 1933 | |
| Magelona papillicornis | Müller, 1858 | |
| Magelona pettiboneae | Jones, 1963 | |
| Magelona phyllisae | Jones, 1963 | Shovel headed worm |
| Magelona pitelkai | Hartman, 1944 | |
| Magelona polydentata | Jones, 1963 | |
| Magelona pulchella | Mohammad, 1970 | |
| Magelona riojai | Jones, 1963 | |
| Magelona rosea | Moore | |
| Magelona sacculata | Hartman, 1961 | |
| Magelona tehuanensis | Hernández-Alcántara & Solís-Weiss, 2000 | |
| Magelona wilsoni | Glémarec, 1966 | |
| Meridithia spinifera | Hernández-Alcántara & Solís-Weiss, 2000 | |
| Octomagelona bizkaiensis | Aguirrezabalaga, Ceberio & Fiege, 2001 |