| Species | Name Used |
|---|---|
| Carcinoscorpius rotundicauda (Latreille, 1802) | Carcinoscorpius rotundicauda (p. ) |
| Limulus polyphemus (Linnaeus, 1758) | Limulus polyphemus (p. ) |
| Tachypleus gigas (Müller, 1785) | Tachypleus gigas (p. ) |
| Tachypleus tridentatus (Leach, 1819) | Tachypleus tridentatus (p. ) |