Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters OLIVEIRA, OTTO M. P. MIRANDA, THAÍS P. ARAUJO, ENILMA M. AYÓN, PATRICIA CEDEÑO-POSSO, CRISTINA M. CEPEDA-MERCADO, AMANCAY A. CÓRDOVA, PABLO CUNHA, AMANDA F. GENZANO, GABRIEL N. HADDAD, MARIA ANGÉLICA MIANZAN, HERMES W. MIGOTTO, ALVARO E. MIRANDA, LUCÍLIA S. MORANDINI, ANDRÉ C. NAGATA, RENATO M. NASCIMENTO, KARINE B. JÚNIOR, MIODELI NOGUEIRA PALMA, SERGIO QUIÑONES, JAVIER RODRIGUEZ, CAROLINA S. SCARABINO, FABRIZIO SCHIARITI, AGUSTÍN STAMPAR, SÉRGIO N. TRONOLONE, VALQUÍRIA B. MARQUES, ANTONIO C. Zootaxa 2016 2016-11-18 4194 1 1 256 6J2VW Hassall, 1848 Hassall 1848 [165,541,476,501] Hydrozoa Lafoeidae Filellum Animalia Leptothecata 82 83 Cnidaria species serpens  Remarks: the examination of the reproductive structures are very important for determination of  Filellumspecies. All reports of this species described colonies without coppinia and, consequently, the records have to be confirmed based on fertile material (see Marques et al.2011 for further details). Distribution in SouthAmerica: polyp—Pacific Ocean, Chile, in Calbuco and Juán Fernandez Archipelago (Hartlaub 1905 p. 596–597); Atlantic Ocean, Argentina, from 52°S to 56°S (Jäderholm 1905 p. 22, 1910; Stepanjants 1979; El Beshbeeshy 1991, 2011; Blanco 1994a; Genzano & Zamponi 1997; Seo 2003). Habitat: polyp—from 80 to 835mdepth (Hartlaub 1905 p. 596–597; Jäderholm 1905 p. 22, 1910; Stepanjants 1979; El Beshbeeshy 1991, 2011; Blanco 1994a; Seo 2003).