| Species | Name Used in Reference |
|---|---|
| Xenocephalus australiensis (Kishimoto, 1989) | Gnathagnus elongatus australiensis (p. 310-312) |
| Xenocephalus cribratus (Kishimoto, 1989) | Gnathagnus cribratus (p. 305-308;fig.1) |
| Xenocephalus elongatus (Temminck & Schlegel, 1843) | Gnathagnus elongatus elongatus (p. 312-313) |