| Species | Name Used in Reference |
|---|---|
| Gigantactis elsmani Bertelsen, Pietsch & Lavenberg, 1981 | Gigantactis elsmani (p. 513) |
| Gigantactis gibbsi Bertelsen, Pietsch & Lavenberg, 1981 | Gigantactis gibbsi (p. 513) |
| Gigantactis golovani Bertelsen, Pietsch & Lavenberg, 1981 | Gigantactis golovani (p. 513) |
| Gigantactis gracilicauda Regan, 1925 | Gigantactis gracilicauda (p. 513-514) |
| Gigantactis ios Bertelsen, Pietsch & Lavenberg, 1981 | Gigantactis ios (p. 514) |
| Gigantactis longicirra Waterman, 1939 | Gigantactis longicirra (p. 514) |
| Gigantactis vanhoeffeni Brauer, 1902 | Gigantactis vanhoeffeni (p. 514) |
| Gigantactis watermani Bertelsen, Pietsch & Lavenberg, 1981 | Gigantactis watermani (p. 515) |
| Rhynchactis leptonema Regan, 1925 | Rhynchactis leptonema (p. 515) |