| Species | Name Used in Reference |
|---|---|
| Hydrolagus africanus (Gilchrist, 1922) | Hydrolagus africanus (p. 509) |
| Hydrolagus erithacus Walovich, Ebert & Kemper, 2017 | Hydrolagus erithacus (p. 511;fig.1-2;tab.1) |
| Hydrolagus homonycteris Didier, 2008 | Hydrolagus homonycteris (p. 516) |
| Hydrolagus melanophasma James, Ebert, Long & Didier, 2009 | Hydrolagus melanophasma (p. 516) |
| Hydrolagus mirabilis (Collett, 1904) | Hydrolagus mirabilis (p. 509) |
| Hydrolagus purpurescens (Gilbert, 1905) | Hydrolagus purpurescens (p. 516) |
| Hydrolagus trolli Didier & Séret, 2002 | Hydrolagus trolli (p. 516) |