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Dynamena quadridentata (Ellis & Solander, 1786) Synonyms in the area: Dynamena quadridentata var. nodosa forme peculiaris ���Leloup 1935 [polyp]; Pasya quadridentata ���Fraser 1938a, 1938b, 1939, 1 948; Calder et al. 2003 [polyp]; Dynamena quadridentata f. flabellata Vannucci Mendes, 1946; Vannucci 1949, 1951a [polyp]; Dynamena quadridentata f. typica Vannucci Mendes, 1946; Vannucci 1949, 1950, 1951a [polyp]; Dynamena quadridentata f. heterodonta ���Vannucci 1951a, 1951b [polyp]; Dynamena quadridentata var. nodosa ���Van Gemerden-Hoogeveen 1965 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, from 0.2��N to 1.2��S in Isla Isabela, at 1.28��S 81.07��W in Isla La Plata, at 2.19��S 80.90��W in Santa Elena Bay (Fraser 1938a, 1938b, 1939, 1948; Calder et al. 2003); Atlantic Ocean, at Aruba, at Cura��ao, at Bonaire, at Tobago Island, Colombia, at Santa Marta coast, Brazil, at 9.80��S 35.80��W, from 16��S to 27.99��S (Leloup 1935; Vannucci Mendes 1946; Vannucci 1949, 1950, 1951a, 1951b; Wedler 1975; Bandel & Wedler 1987; Migotto 1996; Grohmann 1997, 2006; Grohmann et al. 1997, 2003; Nogueira et al. 1997; Migotto et al. 2002; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Maronna et al. 2008, abstract; Silveira & Morandini 2011; Miranda et al. 2011, 2015). Habitat: polyp���up to 57m depth, on algae, hydroids, mussels, sponges (Fraser 1938a, 1938b; Vannucci Mendes 1946; Bandel & Wedler 1987; Migotto 1996; Calder et al. 2003; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 127, DOI: 10.11646/zootaxa.4194.1.1

Lafoea sp. Distribution in South America: polyp���Atlantic Ocean, Brazil, at 3.54��S 38.8��W, from 21.25��S to 23.7��S, at 25.73��S 45.16��W, at 27.45��S 47.16��W (Migotto et al. 2004; Shimabukuro 2007; Fernandez et al. 2014, 2015). Habitat: polyp���on fouling, sponges, shells, nodules of calcareous algae, anthozoan corallum (Migotto et al. 2004; Shimabukuro 2007; Fernandez et al. 2014, 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 85, DOI: 10.11646/zootaxa.4194.1.1

Eudendrium caraiuru Marques & Oliveira, 2003 Synonyms in the area: Eudendrium glomeratum ���Marques 1993; Rosso & Marques 1997; Oliveira et al. 2000; Marques 2001; Migotto et al. 2001; Silveira & Morandini 2011 [polyp] [non Eudendrium glomeratum Picard, 1951]. Remarks: common species on the Brazilian coast (Marques et al. 2006). Further taxonomic details in Marques & Oliveira (2003). Distribution in South America: polyp���Atlantic Ocean, Brazil, from 3��S to 4.50��S, from 22.75��S to 25.58��S, from 38��S to 38.10��S (Marques 1993; Migotto 1996; Rosso & Marques 1997; Oliveira et al. 2000; Marques 2001; Migotto et al. 2001; Marques & Oliveira 2003; Oliveira & Marques 2005; Marques et al. 2006; Shimabukuro & Marques 2006a, abstract; Shimabukuro et al. 2006; Shimabukuro 2007; Silveira & Morandini 2011; Marques et al. 2013; Fernandez et al. 2014, 2015; Miranda et al. 2015). Habitat: polyp���in shallow waters, on fouling, ascidians, bryozoans, barnacles, gastropods, mussels, polychaete tubes, rocks, test panels and other artificial substrates (Migotto et al. 2001; Marques & Oliveira 2003; Marques et al. 2006; Shimabukuro & Marques 2006a; Shimabukuro 2007; Fernandez et al. 2014, 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 58, DOI: 10.11646/zootaxa.4194.1.1

Aglaophenia acacia Allman, 1883 Synonyms in the area: Aglaophenia acacia elegans ���Milstein 1976; Scarabino 2006 [polyp]. Distribution in South America: polyp���Atlantic Ocean, Uruguay to Argentina, from 34��S to 42.8��S (Blanco 1967a, 1994a, 1994b; Vervoort 1972; Milstein 1976; El Beshbeeshy 1991, 2011; Genzano & Zamponi 1997, 2003; Scarabino 2006; Genzano et al. 2002, 2009a, 2011; Miranda et al. 2015). Habitat: polyp���from 29 to 217m depth (Blanco 1967a, 1994a, 1994b; Vervoort 1972; El Beshbeeshy 1991, 2011; Genzano et al. 2002, 2009a). Colonies usually found associated with mussel beds (Genzano et al. 2009a)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 97, DOI: 10.11646/zootaxa.4194.1.1

Plumularia leloupi Blanco & Bellusci de Miralles, 1971b Distribution in South America: polyp���Atlantic Ocean, Argentina, from 54��S to 54.7��S (Blanco & Bellusci de Miralles 1971b; Blanco 1976a, 1994b; El Beshbeeshy 1991, 2011; Genzano & Zamponi 1997; Seo 2003). Habitat: polyp���from 87 to 125m (Blanco & Bellusci de Miralles 1971b; Blanco 1976a, 1994b; El Beshbeeshy 1991, 2011; Seo 2003)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 113, DOI: 10.11646/zootaxa.4194.1.1

Zygophylax convallaria (Allman, 1877) Synonyms in the area: Lictorella cervicornis ���Fraser 1938a, 1938b; Calder et al. 2003 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, from 1.4��N to 1.5��S in Gal��pagos Archipelago (Fraser 1938a, 1938b; Calder et al. 2003). Habitat: polyp���from 37 to 274m depth (Fraser 1938a, 1938b; Calder et al. 2003)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 85, DOI: 10.11646/zootaxa.4194.1.1

Gymnangium hians (Busk, 1852) Synonyms in the area: Halicornaria hians var. balei ���Van Gemerden-Hoogeveen 1965 [polyp]. Distribution in South America: polyp���Atlantic Ocean, Venezuela, at La Tortuga Island (Van Gemerden- Hoogeveen 1965)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 100, DOI: 10.11646/zootaxa.4194.1.1

Synthecium sp. Distribution in South America: polyp���Atlantic Ocean, Brazil, from 2.50��S to 4.80��S, from 17.50��S to 18.30��S, from 21.25��S to 23.40��S (Shimabukuro 2007). Habitat: polyp���on sponges (Shimabukuro 2007)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 87, DOI: 10.11646/zootaxa.4194.1.1

Halecium muricatum (Ellis & Solander, 1786) Distribution in South America: polyp���Atlantic Ocean, Colombia, at 11.35��N 74.27��W in Santa Marta (Bandel & Wedler 1987). Habitat: on hard substrates, mud and sand (Bandel & Wedler 1987)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 94, DOI: 10.11646/zootaxa.4194.1.1

Sertularella conica Allman, 1877 Synonyms in the area: Sertularella tenella ���J��derholm 1903; Nutting 1904; Vannucci 1951a [non Sertularella tenella Alder, 1856] [polyp]; Sertularella inconstans ���Vannucci Mendes 1946; Vannucci 1949, 1950, 1951a; Wedler 1975 [non Sertularella inconstans Billard, 1919] [polyp]. Remarks: Galea (2013 p. 22) considered the record by Migotto (1996) as Sertularella peculiaris Leloup, 1974, but the records included herein were not formally assigned to Leloup���s species. A thorough revision of the materials is necessary to elucidate this doubt, ideally including molecular comparisons. Distribution in South America: polyp���Atlantic Ocean, Colombia, at Santa Marta coast, Venezuela, La Tortuga Island, Brazil, from 18.30��S to 24.20��S, from 27.13��S to 27.21��S, from 31.50��S to 32.50��S, Argentina, from 38.25��S to 56��S (J��derholm 1903; Nutting 1904; Vannucci Mendes 1946; Vannucci 1949, 1950, 1951a; Van Gemerden-Hoogeveen 1965; Vervoort 1972; Wedler 1975; Stepanjants 1979; Blanco 1982, 1994a; Migotto 1996; Genzano & Zamponi 1997, 2003; Grohmann 1997, 2006; Grohmann et al. 1997; Horta et al. 2001, abstract; Migotto et al. 2002, 2004; Shimabukuro 2007; Genzano et al. 2009a; Silveira & Morandini 2011; Miranda et al. 2011, 2015). Habitat: polyp���from intertidal zone to 157m depth, on Dynamena crisioides, sponges, shells, nodules of calcareous algae, Sargassum, anthozoan corallum (Vervoort 1972; Stepanjants 1979; Blanco 1982, 1994a; Migotto 1996; Zamponi et al. 1998; Seo 2003; Migotto et al. 2004; Shimabukuro 2007; Genzano et al. 2009a; Miranda et al. 2011, 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on pages 116-117, DOI: 10.11646/zootaxa.4194.1.1

Halopteris tenella (Verrill, 1874) Synonyms in the area: Halopteris constricta ���Migotto 1996 [part]; Oliveira 2003; Oliveira et al. 2006 [polyp]; Schizotricha tenella ���Calder & Ma��al 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 & Ma��al 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 & Ma��al 1998; Oliveira 2003; Oliveira et al. 2006)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 106, DOI: 10.11646/zootaxa.4194.1.1

Campanularia subantarctica Millard, 1971 Synonyms at the area: Campanularia tincta ���J��derholm 1905; Ritchie 1907a; Blanco 1964; Genzano & Zamponi 1997 [polyp] [non Campanularia tincta Hincks, 1861b]; Campanularia subantartica ���Genzano 1990, 1994b; Genzano & Zamponi 1997; Genzano et al. 2009a; Seo 2003 [polyp] [incorrect subsequent spelling]. Remarks: the names included in the synonymy of Campanularia subantarctica Millard, 1971 are considered provisional, pending more detailed study (see remarks of Campanularia lennoxensis J��derholm, 1903). The latitude given by Genzano (1990), as 83��S, is incorrect. Distribution in South America: polyp���Atlantic Ocean, Argentina, at 38.13��S 57.51��W, and from 41.22��S to 55.02��S (J��derholm 1905; Ritchie 1907a; Blanco 1964, 1984c, 1994a; Genzano 1990, 1994b; Genzano et al. 1991, 2009a; Genzano & Zamponi 1997; Seo 2003; Cunha et al. 2015; Miranda et al. 2015). Habitat: polyp���from intertidal zone to 100m depth, on hydroids such as Amphisbetia operculata, Plumularia setacea and Symplectoscyphus marionensis, algae and bryozoans (J��derholm 1905; Blanco 1984c; Genzano 1990, 1994b; Seo 2003)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 156, DOI: 10.11646/zootaxa.4194.1.1

Kirchenpaueria oligopyxis (Kirchenpauer, 1876) Synonyms in the area: Plumularia oligopyxis Kirchenpauer 1876 p. 48���49; Nutting 1900 p. 57���58 [polyp]. Remarks: Calder (1997 p. 4, as Plumularia oligopyxis) reasonably considered this species as a possible synonym of Ventromma halecioides. However, the elucidation of this proposal needs more study. Distribution in South America: polyp���Pacific Ocean, no specific record for the coast of South America (Kirchenpauer 1876 p. 48���49; Nutting 1900 p. 57���58). Habitat: polyp���on algae, gorgonians and sponges (Kirchenpauer 1876)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 107, DOI: 10.11646/zootaxa.4194.1.1

Plumularia galapagensis Calder, Mallinson, Collins & Hickman, 2003 Synonyms in the area: Plumularia tenuissima Fraser, 1938b, 1938c; Calder et al. 2003 [non Plumularia tenuissima Totton, 1930] [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, at 0.28��S 90.56��W in Isla Santiago (Fraser 1938b, 1938c; Calder et al. 2003). Habitat: polyp���from 64 to 73m depth (Fraser 1938b, 1938c; Calder et al. 2003)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 112, DOI: 10.11646/zootaxa.4194.1.1

Calamphora campanulata (Warren, 1908a) Distribution in South America: polyp���Atlantic Ocean, Brazil, from 20.20��S to 20.35��S, at 28.30��S 40.30��W (Grohmann et al. 1997; Migotto et al. 2002; Grohmann 2006)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 125, DOI: 10.11646/zootaxa.4194.1.1

Aegina citrea Eschscholtz, 1829 Synonyms in the area: Aegina rosea ���Vannucci 1951a. Distribution in South America: medusa���Pacific Ocean, Chile, from 33��S to 33.67��S (Fagetti 1973 p. 45); Atlantic Ocean, Brazil to Uruguay, at 7.25��N 78.90��W, from 10��N to 35��S (Thiel 1936; Alvari��o 1968; Vannucci 1951a, 1957a; Kramp 1959a, Navas-Pereira 1974, 1981; Ram��rez & Zamponi 1981; Correia 1983; Segura-Puertas 1984; Migotto et al. 2002; Genzano et al. 2008a). Habitat: medusa���species widely distributed in the warm and temperate parts of all oceans; in cold waters it is restricted to deep water, but in warm areas it may occur at all depths (Kramp 1959a; Segura-Puertas 1984)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 195, DOI: 10.11646/zootaxa.4194.1.1

Eirene viridula (P��ron & Lesueur, 1809) Distribution in South America: medusa���Atlantic Ocean, Colombia to Brazil, from 10��N to 0�� (Equator) (Alvari��o 1968; Migotto et al. 2002)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 148, DOI: 10.11646/zootaxa.4194.1.1

Hippopodius hippopus (Forsk��l, 1776) Distribution in South America: Pacific Ocean, Colombia, from 7��N to 1��N (Alvari��o 1976; Cely & Chiquillo 1993), Peru, from 8o S to 16o S (IMARPE database), Chile, at 23��S off Antofagasta (Pag��s et al. 2001; Apablaza & Palma 2006); Atlantic Ocean, off French Guiana (Leloup 1934; Leloup & Hentschel 1935), Brazil to Argentina, from 0�� to 48��S (Moser 1925; Seguin 1965; Alvari��o 1968, 1971; Nogueira & Oliveira 1991; Dias 1994; Pugh 1999; Migotto et al. 2002; Araujo 2006, 2012; Araujo et al. 2010; Silveira & Morandini 2011; Bonecker et al. 2014). Habitat: neritic and oceanic species, epipelagic, widely distributed in tropical, subtropical and temperate waters (Alvari��o 1971; Pugh 1974; Pag��s & Gili 1992; Pugh & Gasca 2009; Araujo 2012; Bonecker et al. 2014)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 189, DOI: 10.11646/zootaxa.4194.1.1

Eirene sp. Distribution in South America: polyp���Atlantic Ocean, Brazil, at 23.85��S 45.42��W (Spiritus & Migotto 2008, abstract); medusa���Atlantic Ocean, Brazil, from 26��S to 26.5��S, and at 27.84��S 46.91��W (Correia 1983; Nogueira Jr. 2012; Nogueira Jr. et al. 2015a). Habitat: polyp���interstitial, loosely attached to sand grains (Spiritus & Migotto 2008)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 148, DOI: 10.11646/zootaxa.4194.1.1

Ectopleura? obypa Migotto & Marques, 1999a Distribution in South America: polyp���Atlantic Ocean, Brazil, at 3.58��S 38.80��W (Fernanadez et al. 2015). Habitat: polyp���from 2 to 4m depth, on artificial panels (Fernanadez et al. 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 36, DOI: 10.11646/zootaxa.4194.1.1

Crossota alba Bigelow, 1913 Distribution in South America: medusa���Pacific Ocean, Chile, at 34.34��S at south of Valpara��so (Fagetti 1973 p. 42)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 202, DOI: 10.11646/zootaxa.4194.1.1

Halecium maximum Galea & Schories, 2014 Distribution in South America: polyp���Pacific Ocean, Chile, at 39.95��S 73.61��W (Galea et al. 2014 p. 20���22). Habitat: polyp���from 8 to 10m depth (Galea et al. 2014 p. 20���22)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 93, DOI: 10.11646/zootaxa.4194.1.1

Amphisbetia bispinosa (Gray, 1843) Distribution in South America: polyp���Atlantic Ocean, Argentina, no specific record for R��o Negro (J��derholm 1903; Blanco 1994a; Genzano & Zamponi 1997)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 123, DOI: 10.11646/zootaxa.4194.1.1

Halecium dyssymetrum Billard, 1929 Synonyms in the area: Endothecium dyssymetrum ���Grohmann, 1997 [polyp]; Halecium dyssymmetrum ���Shimabukuro 2007 [incorrect subsequent spelling] [polyp]. Distribution in South America: polyp���Atlantic Ocean, Brazil, at 20.27��S 40.27��W, from 23��S to 27.99��S (Grohmann 1997, 2006; Grohmann et al. 1997; Rosso & Marques 1997; Migotto 1996; Migotto et al. 2002; Oliveira 2003; Oliveira et al. 2006; Bornancin 2008; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Silveira & Morandini 2011; Miranda et al. 2011, 2015; Fernandez et al. 2014, 2015). Habitat: polyp���from intertidal zone to 5m depth, on algae, fouling, ascidians, mussels, hydroids, rock, sponges (Migotto 1996; Oliveira 2003; Oliveira et al. 2006; Bornancin 2008; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Miranda et al. 2011; Fernandez et al. 2014, 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 92, DOI: 10.11646/zootaxa.4194.1.1

Salacia thuja (Linnaeus, 1758) Remarks: the record of this species still has to be confirmed. Distribution in South America: polyp���Atlantic Ocean, Argentina, at 39.94��S 57.18��W (El Beshbeeshy 1991, 2011). Habitat: polyp���at 95m depth (El Beshbeeshy 1991, 2011)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 128, DOI: 10.11646/zootaxa.4194.1.1

Zanclea costata Gegenbaur, 1856a Remaks: doubtful identification of the medusa stages, especially in southeastern Brazilian waters (20��S to 25��S) due to the recent synonymy of the polyp stage present in this area with Z. migottoi (cf. Galea 2008 p. 14���16). Distribution in South America: medusa���Atlantic Ocean, Brazil to Uruguay, from 20��S to 25��S, from 29��S to 35��S (Vannucci 1957; Navas-Pereira 1974, 1981, 1984; Ram��rez & Zamponi 1981; Migotto et al. 2002; Silveira & Morandini 2011; Miranda et al. 2015). Habitat: medusa���neritic, eurythermic and euryhaline species (Vannucci 1957; Navas-Pereira 1974)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 47, DOI: 10.11646/zootaxa.4194.1.1

Apolemia uvaria (Lesueur, 1815) Distribution in South America: Atlantic Ocean, Colombia, Cartagena Bay, at 10��N 75��W, Brazil, from 1��S to 4��S, and at ca. 24��S (Moncaleano & Ni��o 1976; Araujo 2006, 2012; specimens collected in this study). Habitat: neritic and oceanic species (Araujo 2012)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 174, DOI: 10.11646/zootaxa.4194.1.1

Ceratocymba leuckarti (Huxley, 1859) Distribution in South America: Pacific Ocean, Peru, from 6��S to 16��S (IMARPE database); Atlantic Ocean, Brazil to Argentina, from 0�� to 39��S (Alvari��o 1968, 1971, 1981; Nogueira & Oliveira 1991; Dias 1994; Pugh 1999; Migotto et al. 2002; Araujo 2006, 2012; Araujo et al. 2010; Silveira & Morandini 2011). Habitat: neritic and oceanic species, found in tropical and subtropical waters (Alvari��o 1971; Alvari��o et al. 1990; Pag��s & Gili 1992; Pugh & Gasca 2009; Araujo 2012)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 179, DOI: 10.11646/zootaxa.4194.1.1

Scandia corrugata Fraser, 1938a Distribution in South America: polyp���Pacific Ocean, Colombia, at 6.78��N 77.60��W in Octavia Bay (Fraser 1938b, 1948). Habitat: polyp���from 64 to 73m depth (Fraser 1938b)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 78, DOI: 10.11646/zootaxa.4194.1.1

Clava sp. Distribution in South America: polyp���Atlantic Ocean, Colombia, at Santa Marta coast (Wedler 1975)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 62, DOI: 10.11646/zootaxa.4194.1.1

Rhizogeton nudus Broch, 1910 Synonyms in the area: Rhizogeton nudum ���Genzano 1993, 1994; Genzano & Zamponi 1997, 2003; Genzano & Rodriguez 1998 [incorrect subsequent spelling] [polyp]. Distribution in South America: polyp���Atlantic Ocean, Argentina, at 38��S 57��W in Buenos Aires coast (Genzano 1993, 1994; Genzano & Zamponi 1997, 2003; Genzano & Rodriguez 1998; Genzano et al. 2009a; Miranda et al. 2015). Habitat: polyp���at intertidal area, on colonies of other hydroid (e.g., Ectopleura crocea), bryozoans, sponges (Genzano 1993; Genzano & Zamponi 2003; Genzano et al. 2009a)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 67, DOI: 10.11646/zootaxa.4194.1.1

Eudendrium merulum Watson, 1985 Remarks: the records are based on badly preserved specimen and are considered doubtful (Marques 1993, 2001). Distribution in South America: Atlantic Ocean, Brazil, at 27.78��S 48.49��W (Marques 1993, 2001; Migotto et al. 2002; Miranda et al. 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 59, DOI: 10.11646/zootaxa.4194.1.1

Asyncoryne ryniensis Warren, 1908a Distribution in South America: polyp���Atlantic Ocean, Brazil, at 23.82��S 45.41��W (Migotto 1996; Migotto et al. 2002; Silveira & Morandini 2011, Miranda et al., 2015); medusa���Atlantic Ocean, Brazil, at 23.82��S 45.41��W (Migotto 1996; Migotto et al. 2002). Habitat: polyp���on rock, at 8m depth (Migotto 1996)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on pages 37-38, DOI: 10.11646/zootaxa.4194.1.1

Symplectoscyphus valdesicus El Beshbeeshy, 2011 Synonyms in the area: Symplectoscyphus valdesicus El Beshbeeshy, 1991 nomen nudum [polyp]. Remarks: the name Symplectoscyphus valdesicus El Beshbeeshy, 1991 is a nomen nudum because it was first proposed in an unpublished dissertation (El Beshbeeshy 1991, 2011). Recently, this name was made available by El Beshbeeshy (2011) (see article 50.1 of ICZN 1999). Distribution in South America: polyp���Atlantic Ocean, Argentina, from 42��S to 43��S (El Beshbeeshy 1991, 2011). Habitat: polyp���from 60 to 835m depth (El Beshbeeshy 1991, 2011)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 141, DOI: 10.11646/zootaxa.4194.1.1

Cladocoryne floccosa Rotch, 1871 Synonyms in the area: Cladyocoryne pelagica ���Fraser 1938a, 1948 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, at 0.04��S 91.55��W in Isla Isabela, at 2.19��S 80.90��W in Santa Elena Bay (Fraser 1938a, 1948; Calder et al. 2003); Atlantic Ocean, Brazil, at 3.54��S 38.8��W, from 8.50��S to 27.14��S (Migotto 1996; Grohmann 1997, 2006; Grohmann et al. 1997, 2003; Calder & Ma��al 1998; Migotto et al. 2002; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Maronna et al. 2008, abstract; Cunha & Jacobucci 2010; Silveira & Morandini 2011; Miranda et al. 2011, 2015; Fernandez et al., 2015). Habitat: polyp���on marine rocky shores and estuarine region, from intertidal zone to 22m depth, on algae, fouling, other hydroids, decapod, sea urchin, sandstone reef (Fraser 1938a; Migotto 1996; Calder & Ma��al 1998; Calder et al. 2003; Oliveira 2003; Oliveira et al. 2006; Oliveira & Marques 2007, 2011; Shimabukuro 2007; Cunha & Jacobucci 2010; Fernandez et al., 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 38, DOI: 10.11646/zootaxa.4194.1.1

Aglaophenia?tenerrima Kirchenpauer (1876) Remarks: species recorded for Chile by Stechow (1919). Distribution in South America: polyp���Atlantic Ocean, Chile, at 37��S in Talcahuano (Stechow 1919)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on pages 99-100, DOI: 10.11646/zootaxa.4194.1.1

Idiellana pristis (Lamouroux, 1816) Synonyms in the area: Idia pristis ���Allman 1888 [polyp]; Dynamena crisioides f. gigantea ���Vannucci Mendes 1946 [polyp]; Idiella pristis ���Wedler 1975 [polyp]. Distribution in South America: polyp���Atlantic Ocean, Colombia, at Santa Marta coast, Venezuela, at La Tortuga Island, Brazil, at 9.80��S 35.80��W, from 11.50��S to 18.25��S, from 23.5��S to 25.7��S (Allman 1888; Vannucci Mendes 1946; Vervoort 1946; Vannucci 1951a; Van Gemerden-Hoogeveen 1965; Wedler 1975; Bandel & Wedler 1987; Migotto 1996; Rosso & Marques 1997; Migotto et al. 2002; Shimabukuro 2007; Maronna et al. 2008, abstract; Silveira & Morandini 2011; Marques et al. 2013; Miranda et al. 2015). Habitat: polyp���from 8 to 36m depth, on coral, mud, rocks, sponge (Allman 1888; Migotto 1996; Shimabukuro 2007)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 128, DOI: 10.11646/zootaxa.4194.1.1

Symplectoscyphus sp. 1 Distribution in South America: polyp���Pacific Ocean, Chile, at 39.85��S 73.46��W (Galea & Schories 2012a p. 55���56); Atlantic Ocean, Brazil to Argentina, at 24.35��S 44.16��W, at 25.95��S 45.57��W, from 27.40��S to 27.50��S, from 29��S to 29.50��S, at 41.08��S 57.25��W, and at 53.73��S 59.90��W (Migotto et al. 2004; El Beshbeeshy 1991, 2011). Habitat: polyp���from 10 to 775m depth, on shells, nodules of calcareous algae, anthozoan corallum and calcareous bryozoan (El Beshbeeshy 1991, 2011; Migotto et al. 2004; Galea & Schories 2012a p. 55���56)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 140, DOI: 10.11646/zootaxa.4194.1.1

Malagazzia carolinae (Mayer, 1900) Synonyms in the area: Phialucium carolinae ���Alvari��o 1968; Navas-Pereira 1974, 1980; Ram��rez & Zamponi 1980, 1981; Zamponi 1983a, 1985; Zamponi & Suarez 1991 [medusa]; Phialucium carolinea ���Navas-Pereira 1980 [medusa]. Distribution in South America: medusa���Atlantic Ocean, Colombia to Argentina, from 10��N to 0�� (Equator), from 22.90��S to 23.10��S, from 26��S to 26.5��S, and from 29��S to 41��S (Alvari��o 1968; Navas-Pereira 1974, 1980, 1981; Ram��rez & Zamponi 1980, 1981; Zamponi 1983a, 1985; Zamponi & Suarez 1991; Migotto et al. 2002; Genzano et al. 2008; Nogueira Jr. 2012; Nogueira Jr. et al. 2015a)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on pages 150-151, DOI: 10.11646/zootaxa.4194.1.1

Millepora braziliensis Verrill, 1868 Synonyms in the area: Millepora brasiliensis ���Branner 1904 [polyp] [incorrect subsequent spelling]. Distribution in South America: polyp���Atlantic Ocean, Brazil, at 0.49��S 44.75��W, from 3.50��S to 21��S (Verrill 1868; Branner 1904; Laborel 1969a; Hetzel & Castro 1994; Amaral 1997; Hudson et al. 1999; Castro & Segal 2001; Castro & Pires 2001; Amaral et al. 2002a, 2008, 2009; Migotto et al. 2002; Ramos et al. 2009; Leal et al. 2013). Habitat: polyp ���on calcareous algae, scleractinian Agaricia agaricites, and mud (Amaral et al. 2008)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 43, DOI: 10.11646/zootaxa.4194.1.1

Cuspidella sp. Distribution in South America: polyp���Atlantic Ocean, Brazil, at 23.83��S 45.42��W (Migotto et al. 2001, 2002; Silveira & Morandini 2011). Habitat: polyp���at 1.5m depth, on aequorid, Plumularia strictocarpa, Obelia bidentata (Migotto et al. 2001)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 143, DOI: 10.11646/zootaxa.4194.1.1

��� Calycopsidae sp. indet. 1��� Remarks: Tronolone (2001) considered that her specimens could be possibly assigned to Calycopsis Fewkes, 1882, though we have preserved the original reference as ��� Calycopsidae sp. indet. 1���. Distribution in South America: medusa���Atlantic Ocean, Brazil, from 23.50��S to 24��S (Tronolone 2001; Migotto et al. 2002)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 49, DOI: 10.11646/zootaxa.4194.1.1

Clytia macrotheca (Perkins, 1908) Synonyms in the area: Laomedea macrotheca ���Leloup 1935 [polyp]. Distribution in South America: polyp���Atlantic Ocean, at Bonaire, Brazil, from 11.25��S to 13.20��S (Leloup 1935; Kelmo & Attrill 2003; Shimabukuro 2007). Habitat: polyp���on corals, hydroids (Halecium bermudense, Sertulariidae), rocks (Leloup 1935; Kelmo & Attrill 2003; Shimabukuro 2007)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 165, DOI: 10.11646/zootaxa.4194.1.1

Clytia colombiana Wedler, 1976 Synonyms in the area: Campanularia columbiana ���Bandel & Wedler 1987 [polyp]. Distribution in South America: polyp���Atlantic Ocean, Colombia, in Santa Marta (Wedler 1975, 1976; Bandel & Wedler 1987). Habitat: polyp���from 3 to 20m depth, on Zostera marina and Syringodium filiforme (Wedler 1975, 1976; Bandel & Wedler 1987)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 161, DOI: 10.11646/zootaxa.4194.1.1

Nemalecium lighti (Hargitt, 1924) Distribution in South America: polyp���Atlantic Ocean, Brazil, at 3.54��S 38.8��W, from 20��S to 24��S and from 26��S to 29.5��S (Migotto 1996; Grohmann 1997, 2006; Grohmann et al. 1997; Nogueira et al. 1997; Gravier-Bonnet & Migotto 2000; Migotto et al. 2001, 2002; Marques et al. 2002; Shimabukuro 2007; Silveira & Morandini 2011; Marques et al. 2013; Lindner et al. 2014; Fernandez et al. 2015; Miranda et al. 2015). Habitat: polyp���from intertidal zone to 4m depth, on fouling, ascidians, byozoans, ceramic test-panels, hydroids, mussels, Mussismillia hispida, rocks, sponges (Migotto 1996; Gravier-Bonnet & Migotto 2000; Migotto et al. 2001; Shimabukuro 2007; Fernandez et al. 2015)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 96, DOI: 10.11646/zootaxa.4194.1.1

Podocoryna sp. 2 Distribution in South America: medusa���Atlantic Ocean, Brazil, from 26��S to 26.5��S (Nogueira Jr. 2012; Nogueira Jr. et al. 2015a)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 65, DOI: 10.11646/zootaxa.4194.1.1

Nemertesia antennina (Linnaeus, 1758) Distribution in South America: polyp���Atlantic Ocean, Brazil, at 22.10��S 40��W (Grohmann et al. 2003)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 110, DOI: 10.11646/zootaxa.4194.1.1

Lampea pancerina (Chun, 1879) Distribution in South America: Atlantic Ocean, Suriname to Argentina, from 11��N to 41��S (Harbison et al. 1978; Mianzan 1999; specimens collected in this study). Habitat: epipelagic, with occurrences associated with salps, their usual preys (Harbison et al. 1978)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 214, DOI: 10.11646/zootaxa.4194.1.1

Chuniphyes multidentata Lens and van Riemsdijk, 1908 Synonyms in the area: Chuniphyes problematica Moser, 1925; Eudoxia problematica (Moser, 1925); Leloup 1934; Leloup & Hentschel 1935. Distribution in South America: Atlantic Ocean, off French Guiana (Leloup 1934), Brazil to Argentina, from 0�� to 59��S (Moser 1925; Leloup 1934; Leloup & Hentschel 1935; Alvari��o 1971; Pugh 1999; Migotto et al. 2002; Silveira & Morandini 2011; Bonecker et al. 2014). Habitat: oceanic species, epi- and mesopelagic, found in tropical, subtropical and temperate waters (Alvari��o 1971; Pugh 1999, Pugh & Gasca 2009; Bonecker et al. 2014)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 180, DOI: 10.11646/zootaxa.4194.1.1

Solmundella bitentaculata (Quoy & Gaimard, 1833) Distribution in South America: medusa���Pacific Ocean, Colombia to Chile, from 20��N to 55.84��S (Kramp 1952, 1966; Fagetti 1973 p. 46���47; Alvari��o 1976; Segura-Puertas 1984; Cely & Chiquillo 1993; Palma 1994; Palma & Rosales 1995; Pag��s & Orejas 1999; Pag��s, et al. 2001; Palma & Apablaza 2004; Apablaza & Palma 2006; Baldrich 2007; Galea 2007 p. 96; Palma et al. 2007a p. 70, 2007b p. 75���76, 2011; Villenas et al. 2009; IMARPE database of zooplankton); Atlantic Ocean, Colombia to Uruguay, from 10.42��N to 35��S, at Strait of Magellan, Malvinas (Falkland) Islands and Antarctic waters (Kramp 1957; Vannucci 1957a; Alvari��o 1968; Moreira 1973; Navas-Pereira 1974, 1981; Moncaleano & Ni��o 1976; Ram��rez & Zamponi 1980, 1981; Correia 1983; Zamponi 1983a, 1985; Pag��s & Orejas 1999; Migotto et al. 2002; Tronolone 2008; Genzano et al. 2008a; Nascimento 2010; Silveira & Morandini 2011; Bonecker et al. 2014; Gusm��o et al. 2015; Nogueira Jr. et al. 2015b). Habitat: medusa���from 10 to 1200m depth, stenohaline and eurythermic species (Vannucci 1957a; Navas- Pereira 1974; Bonecker et al. 2014)., Published as part of M. P. Oliveira 1,16, S P. Miranda 2, *,, Es W. Mianzan 10,, Ro E. Migotto 11,, Ne B. Nascimento 2,11, Eli Nogueira J��nior 12,, Er Qui��ones 13,, Izio Scarabino 14,, T��n Schiariti 10,, Io N. Stampar 15,, Tronolone 2, , Qu��ria B. & Onio C. Marques 2,11, 2016, Census of Cnidaria (Medusozoa) and Ctenophora from South American marine waters, pp. 1-256 in Zootaxa 4194 (1) on page 195, DOI: 10.11646/zootaxa.4194.1.1