| Nominal Species (n = 30) | Present allocation (n = 30) | Ref. |
|---|---|---|
| Zygonemertes albida Coe, 1901 | Zygonemertes albida | 19 |
| Amphiporus allucens Burger, 1895 | Amphiporus allucens | 19 |
| Amphiporus antifuscus Iwata, 1954 | Amphiporus antifuscus | 907 |
| Amphiporella baltica Friedrich, 1940 | Amphiporella baltica | 3477 |
| Proneurotes baltica Friedrich, 1940 | Proneurotes baltica | 3477 |
| Amphiporus bimaculatus Coe, 1901 | Amphiporus bimaculatus | 19 |
| Amphiporus bioculatus McIntosh, 1873 | Amphiporus bioculatus | 19 |
| Amphiporus californicus Coe, 1905 | Amphiporus californicus | 19 |
| Tatsnoskia depressa Stimpson, 1857 | Amphiporus depressus | 3477 |
| Amphiporus dissimulans Riches, 1893 | Amphiporus dissimulans | 19 |
| Amphiporus exilis Coe, 1901 | Amphiporus exilis | 930 |
| Amphiporus formidabilis Griffin, 1898 | Amphiporus formidabilis | 19 |
| Amphiporus frontalis Verrill, 1892 | Amphiporus frontalis | 3477 |
| Zygonemertes glandulosa Yamaoka, 1940 | Zygonemertes glandulosa | 907 |
| Amphiporus hagmeieri Friedrich, 1940 | Communoporus hagmeieri | 3477 |
| Amphiporus hastatus Mcintosh, 1873 | Amphiporus hastatus | 19 |
| Amphiporus heterosorus Verrill, 1892 | Amphiporus heterosorus | 3477 |
| Amphiporus imparispinosus Griffin, 1898 | Amphiporus imparispinosus | 3477 |
| Amphiporus langiaegeminus Burger, 1895 | Amphiporus langiaegeminus | 19 |
| Amphiporus leuciodus Coe, 1901 | Amphiporus leuciodus | 930 |
| Amphiporus moseleyi Hubrecht, 1887 | Amphiporus moseleyi | 3477 |
| Amphiporus musculus Iwata, 1954 | Amphiporus musculus | 907 |
| Amphiporus nebulosus Coe, 1901 | Amphiporus nebulosus | 19 |
| Amphiporus parvus Yamaoka, 1940 | Amphiporus parvus | 907 |
| Amphiporus punctatulus Coe, 1905 | Amphiporus punctatulus | 19 |
| Amphiporus regius Iwata, 1954 | Amphiporus regius | 907 |
| Amphiporus rubellus Coe, 1905 | Amphiporus rubellus | 19 |
| Polystemma sinuosum Stimpson, 1857 | Amphiporus sinuosus | 3477 |
| Zygonemertes thalassina Coe, 1901 | Zygonemertes thalassina | 19 |
| Zygonemertes wadjemupensis Gibson, 1999 | Zygonemertes wadjemupensis | 3477 |