- ? thyrsoideus Richardson, 1845

- Echidna kishinouyei Jordan & Snyder, 1901

- Gymnothorax thrysoideus (Richardson, 1845)

- Gymnothorax thyrsoides (Richardson, 1845)

- Muraena prosopeion Bleeker, 1853

- Muraena thrysoidea Richardson, 1845

- Muraena thyrsoides Richardson, 1845

- Siderea prosopeion (Bleeker, 1853)

- Siderea thrysoidea (Richardson, 1845)

- Siderea thyrsoidea (Richardson, 1845)

- Siderea thysoidea (Richardson, 1845)

- Thyrsoidea arenata Kaup, 1856