| Key | Title |
| 113 | Key to the species of numbfishes (Narcinidae) occuring in the Western Central Pacific. |
| 114 | Key to the species of torpedos (Torpedinidae) occuring in the Western Central Pacific. |
| 883 | Key to species of electric rays (torpedoes, AFS: torpedo electric rays) (Torpedinidae) occurring in the Western Central Atlantic. |
| 884 | Key to species of numbfishes (AFS: electric rays) (Narcinidae) occurring in the Western Central Atlantic. |