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 Jaderholm, 1904a Jaderholm 1904 [151,701,257,282] Hydrozoa Sertulariidae Antarctoscyphus Animalia Leptothecata 134 135 Cnidaria species elongatus  Distribution in SouthAmerica: polyp—Atlantic Ocean, Argentina, at 54.42°S 57.53°W, and at  South GeorgiaIslands (Jäderholm 1905; Ritchie 1907a; Stepanjants 1979; Blanco 1994a; Genzano & Zamponi 1997). Habitat: polyp—from 102 to 350mdepth (Jäderholm 1905; Ritchie 1907a; Stepanjants 1979; Blanco 1994a).