Schizotricha bifurca Hartlaub, 1904: 16, pl. 3 fig. 4–8.
Oswaldella bifurca — Stechow, 1919: 852; 1920: 40 (32); Peña Cantero et al., 1997: 345–349, figs 1, 13 a; Peña Cantero & García Carrascosa, 1998: 179; 1999: 214; Peña Cantero & Vervoort, 1998: 36; 2004: 816–818, fig. 1; Peña Cantero & Marques, 1999: 85; Peña Cantero, 2012: 858.
Not Oswaldella bifurca — Naumov & Stepanjants, 1962: 98; Stepanjants, 1979: 112, pl. 21 fig. 4; Blanco, 1984: 43, pl. 39 figs 89, 90, pl. 40 figs 91–93, pl. 41 fig. 94.
Not Oswaldella bifurca — Totton, 1930: 208, fig. 50 (= Oswaldella tottoni Peña Cantero & Vervoort, 1996); Peña Cantero, 1991: 175–179, pl. 32; Peña Cantero & García Carrascosa, 1994: 125–126, fig. 8 d–f; 1995: 101–104, fig. 45 A–E (= Oswaldella grandis Peña Cantero, Svoboda & Vervoort, 1997); Millard, 1977: 40, fig. 12 a–c (=? Ventromma sp.).
Ecology. Deep-water species, found at depths from 342 to 1610 m (Peña Cantero & Vervoort 2004). Gonothecae: November (Hartlaub 1904), January (Peña Cantero & Vervoort 2004) and February (Peña Cantero et al. 1997; Peña Cantero & Vervoort 2004). Basibiont of other hydroids (Peña Cantero & Vervoort 2004).
Distribution. Circum-Antarctic (Peña Cantero & Vervoort 2004). West Antarctica: the Bellingshausen Sea (Hartlaub 1904) and the Weddell Sea (Peña Cantero et al. 1997). East Antarctica: the Balleny Islands, the Ross Sea, and off Victoria Land (Peña Cantero & Vervoort 2004).