ciliatus, Petromyzon Ayres [W. O.] 1855:[2] col. 4 [The Pacific [newspaper] v. 4 (nos 7-22); ref. 13428] San Francisco Bay, California, U.S.A. Holotype (unique): apparently lost. Appeared first as above on 20 Apr., then in Ayres 1855:44 [ref. 159]. •Synonym of Entosphenus tridentatus (Gairdner 1836), but a valid subspecies -- (Reshetnikov 1998:16 [ref. 23570] as ciliaris). •Synonym of Lampetra tridentata (Richardson 1836) -- (authors). •Synonym of Entosphenus tridentatus (Gairdner 1836) -- (Scott & Crossman 1998:42 [ref. 24570], Renaud 2011:34 [ref. 31770], Dyldin & Orlov 2016:543 [ref. 34656]). Current status: Synonym of Entosphenus tridentatus (Richardson 1836). Petromyzontidae. Habitat: freshwater, brackish, marine.