caecus, Petromyzon Couch [J.] 1832:23, Figs. 9-10 [Magazine of Natural History and Journal of Zoology, Botany, Minerology, Geology, and Meterology v. 5 (no. 23, art. 4); ref. 5557] Cornwall, England. No types known. Not treated by Renaud 2011:63 [ref. 31770]. •Tentatively a synonym of Lampetra planeri (Bloch 1784) -- (Kottelat 1997:28 [ref. 22952]). Current status: Uncertain as Lampetra planeri (Bloch 1784). Petromyzontidae. Habitat: freshwater.