tridentifer, Polyipnus McCulloch [A. R.] 1914:87, Fig. 4; Pl. 16 [Biological Results Endeavour v. 2 (pt 3); ref. 2940] Great Australian Bight, southern Australia, depth 640-825 meters. Holotype: AMS. Paratypes: AMS E.3542 (1), I.12842 (30, destroyed in 1956), I.32134-001 [ex E.3543] (29), I.32134-002 [ex E.3542] (3); BMNH 1929.10.23.4-5 (2), TMH D151/13032 [ex D37] (5); USNM 179851 (2). Type catalog: Andrews 1971:1 [ref. 31471], Andrews 1992:109 [ref. 22689]. Lectotype selected by Schultz 1961:646 [ref. 10156] as AMS E.3543, although a holotype already existed (see Imamura & Hoese 2023:[7] [ref. 40531]); identity of holotype uncertain. •Valid as Polyipnus tridentifer McCulloch 1914 -- (Machida in Okamura & Kitajima 1984:149, 336 [ref. 8057], Paxton et al. 1989:192 [ref. 12442], Harold 1989:875 [ref. 13508], Paulin et al. 1989:96 [ref. 24556], Gomon et al. 1994:251 [ref. 22532], Harold 1994:528 [ref. 21941], Harold 1999:1902 [ref. 24741], Randall & Lim in Randall & Lim 2000:590 [ref. 25122], Hutchins 2001:19 [ref. 25847], Paxton et al. 2006:427 [ref. 28995], Harold & Gomon 2008:233 [ref. 30629], Harold et al. 2015:464 [ref. 34249], Vourey et al. 2017:574 [ref. 35312], Imamura & Hoese 2023:[4] [ref. 40531]). Current status: Valid as Polyipnus tridentifer McCulloch 1914. Sternoptychidae: Sternoptychinae. Distribution: Southeastern Indian Ocean, southwestern Pacific: Australia and New Zealand. Habitat: marine.