loennbergii, Trematomus Regan [C. T.] 1913:263, Pl. 8 (fig. 4) [Transactions of the Royal Society of Edinburgh v. 49 (pt 2, no. 2); ref. 3651] Southwest of Balleny Islands, Antarctica. Syntypes: (3) BMNH 1906.5.8.69 (1). •Valid as Trematomus loennbergii Regan 1913 -- (DeWitt et al. 1990:322 [ref. 21696] with a holotype, Ozouf-Costaz et al. 1999:437 [ref. 23957], Eastman & Eakin 2000:16 [ref. 24631], Eastman & Eakin 2021:[3] [ref. 38307], Frédérich et al. 2022:59 [ref. 39239]). •Valid as Pseudotrematomus loennbergii (Regan 1913) -- (Miller 1993:211 [ref. 21297], Balushkin 2000:S97 [ref. 29555]). Current status: Valid as Pseudotrematomus loennbergii (Regan 1913). Nototheniidae: Trematominae. Distribution: Southern Ocean: circum-Antarctic. Habitat: marine.