Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters Author M. P. Oliveira 1,16 Author S P. Miranda 2, *, Author Es W. Mianzan 10, Author Ro E. Migotto 11, Author Ne B. Nascimento 2,11 Author Eli Nogueira Júnior 12, Author Er Quiñones 13, Author Izio Scarabino 14, Author Tín Schiariti 10, Author Io N. Stampar 15, Author Tronolone 2 Author , Quíria B. Author Onio C. Marques 2,11 text Zootaxa 2016 2016-11-18 4194 1 1 256 journal article 10.11646/zootaxa.4194.1.1 c7258597-fa96-4b98-a6f8-aecc1f8779d5 1175-5326 C21A07A7-3AD9-4AA2-8426-EAB08BA396E6 Halopteris tenella (Verrill, 1874) Synonyms in the area: Halopteris constricta —Migotto 1996 [part]; Oliveira 2003; Oliveira et al. 2006 [polyp]; Schizotricha tenella —Calder & Maÿal 1998 [polyp]. Remarks: Galea (2013 p. 34) remarked that some materials listed herein, like that by Migotto (1996, in part, see below), “may belong” to Halopteris tenella (Verrill, 1874) . Close comparisons of both materials, including molecular analysis, are necessary to resolve this doubt. Distribution in South America: polyp—Atlantic Ocean, Brazil , at 8.71°S 35°W and at 23.80°S 45.40°W (Migotto 1996; Calder & Maÿal 1998; Oliveira 2003; Oliveira et al. 2006). Habitat: polyp—from intertidal zone to 1.5m depth, in estuarine environments, on algae, mud, Rhizophora mangle roots, rock, shells, test panels, wood (Migotto 1996; Calder & Maÿal 1998; Oliveira 2003; Oliveira et al. 2006).