Oswaldella rigida Peña Cantero, Svoboda & Vervoort, 1997: 373 –376, figs 10, 15 C; Peña Cantero & Vervoort, 1998: 36; 2004: 845; Peña Cantero & García Carrascosa, 1999: 214; Peña Cantero & Marques, 1999: 85; Peña Cantero, 2014: 1721, fig. 4 e, f.
Schizotricha antarctica — Vanhöffen, 1910: 336, fig. 48.
Ecology. Shelf and slope species, found at depths between 80 (Peña Cantero et al. 1997) and 1157 m (Peña Cantero 2014), on muddy and rocky bottoms (Peña Cantero et al. 1997). Gonothecae: January (Peña Cantero 2014).
Distribution. Circum-Antarctic (Peña Cantero et al. 1997). East Antarctica: the Davis Sea (Vanhoffen 1910) and off Queen Mary Coast (Peña Cantero 2014). West Antarctica: the Weddell Sea (Peña Cantero et al. 1997).