tetratrema, Ophichthus McCosker [J. E.] & Rosenblatt [R. H.] 1998:417, Figs. 8c, 11 [Proceedings of the California Academy of Sciences v. 50 (no. 19); ref. 23645] 12 kilometers south of Isla Blanca, Costa Rica, 9°24.5'N, 85°06.0'W, depth 900 meters. Holotype: SIO 73-294. Paratypes: CAS 57864 (1), ZMUC P32692 (1). •Valid as Ophichthus tetratrema McCosker & Rosenblatt 1998. Current status: Valid as Ophichthus tetratrema McCosker & Rosenblatt 1998. Ophichthidae: Ophichthinae. Distribution: Eastern Pacific. Habitat: marine.