SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus Author Molinero, A. González Author Peña Cantero, A. L. text Zootaxa 2015 4052 4 401 441 journal article 10.11646/zootaxa.4052.4.1 93f6d085-8e63-4d1e-89c1-f950128b2a61 1175-5326 245887 47EF6E9D-9064-4899-B3DD-276FF7C969EB Oswaldella obscura Peña Cantero, Svoboda & Vervoort, 1997 Oswaldella obscura Peña Cantero, Svoboda & Vervoort, 1997 : 370 –373, figs 9, 15A, B; Peña Cantero & Vervoort, 1998 : 36 ; 2004: 844; Peña Cantero & García Carrascosa, 1998 : 178 ; 1999: 214; Peña Cantero & Marques, 1999 : 85 . Ecology. Shelf and slope species, found at depths from 260 to 830 m , on muddy bottoms (Peña Cantero et al . 1997). Basibiont for other hydroids (Peña Cantero et al . 1997). Gonothecae : January and February (Peña Cantero et al . 1997). Distribution. Hitherto, considered endemic to the Weddell Sea, known from the south and east coasts (Peña Cantero et al . 1997).