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 crassa Peña Cantero & Vervoort, 1998 Oswaldella crassa Peña Cantero & Vervoort, 1998 : 33 –35, fig. 1; 2004: 822; Peña Cantero & García Carrascosa, 1998 : 178 ; 1999: 214; Peña Cantero & Marques, 1999 : 85 . Ecology. Deep-water species, found at depths between 662 and 1120 m ( Peña Cantero & Vervoort 1998 ). Distribution. Hitherto known only from the Bransfield Strait area ( Peña Cantero & Vervoort 1998 ).