| Family | Scientific Name | Author | Year | Common Name |
| Synaphobranchidae | Ilyophis brunneus | Gilbert | 1891 | Ooze Eel |
Ilyophis brunneus
Unique Characters: Head more elongate, mouth extends to level of posterior edge of eye or beyond. Gill openings separate, although they may be closely approximated. Scales present. Scales present. Gill openings parallel or nearly so, separated by a distance about equal to their own length.
Similar Species: None
