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 4XWYV Gegenbaur, 1856a Gegenbaur 1856 [151,612,439,464] Hydrozoa Rhopalonematidae Sminthea Animalia Trachymedusae 203 204 Cnidaria species eurygaster  Remarks: the distribution range provided by Ramírez & Zamponi (1981) is not based on specific records and, therefore, we did not consider that information for this species. Distribution in SouthAmerica: medusa—Pacific Ocean, Colombiato Chile, from 1.50°Nto 54.775°S, and at north and south of GalápagosArchipelago (Kramp 1966; Fagetti 1973; Segura-Puertas 1984; Palma & Rosales 1995; Palma & Apablaza 2004; Palma et al. 2014b); Atlantic Ocean, Brazilto Argentina, from 20.5°Sto 24.5°S, from 30°S to 35°S, at 39.38°S 55.18°W, at 53.90°S 62.92°W(Navas-Pereira 1974, 1981; Zamponi 1985; Migotto et al.2002; Genzano et al.2008a; Nascimento 2010; Bonecker et al.2014). Habitat: medusa—species epi- to bathypelagic (Segura-Puertas 1984; Bonecker et al.2014).