Peña Cantero, Svoboda & Vervoort, 1997 : 373 Peña Cantero & Vervoort, 1998 : 36 Peña Cantero & García Carrascosa, 1999 : 214 Peña Cantero & Marques, 1999 : 85 Peña Cantero, 2014 : 1721 Schizotricha antarctica Vanhöffen, 1910 : 336 SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus Molinero, A. González Peña Cantero, A. L. Zootaxa 2015 4052 4 401 441 6TCJL Pena Cantero, Svoboda & Vervoort, 1997 Pena Cantero, Svoboda & Vervoort 1997 [151,888,1877,1903] Hydrozoa Kirchenpaueriidae Oswaldella Animalia Leptothecata 36 437 Cnidaria species rigida     Oswaldella rigida  Peña Cantero, Svoboda & Vervoort, 1997: 373–376, figs 10, 15C;  Peña Cantero & Vervoort, 1998: 36; 2004: 845;  Peña Cantero & García Carrascosa, 1999: 214;  Peña Cantero & Marques, 1999: 85;  Peña Cantero, 2014: 1721, fig. 4e, 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).