| Ref. No. | Title |
|---|---|
| 43938 | A new nonparasitic species of the Holarctic lamprey genus Lethenteron Creaser and Hubbs, 1922, (Petromyzonidae) from northwestern North America with notes on other species of the same genus. |
| 45639 | A new nonparasitic species of Lethenteron Creaser and Hubbs 1922 (Petromyzonidae) from Hokkaido, Japan. |