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Sertularella sp. 2 Distribution in South America: polyp—Atlantic Ocean, Argentina, at 39.93°S 57.18°W, and at 53.45°S 65.60°W (El Beshbeeshy 1991, 2011). Habitat: polyp—from 95 to 110m depth (El Beshbeeshy 1991, 2011).

Lovenellidae sp. Synonyms in the area: Lovenelidae—Nagata et al. 2014b [incorrect subsequent spelling] [medusa]. Distribution in South America: medusa—Atlantic Ocean, Brazil, from 25°S to 26°S (Nagata et al. 2014b).

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

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

Monostaechas sp. Distribution in South America: polyp—Atlantic Ocean, Brazil, from 11.50°S to 18.25°S (Shimabukuro 2007). Habitat: polyp—on sponge (Shimabukuro 2007).

Chromatonema rubrum Fewkes, 1882 Distribution in South America: medusa���Pacific Ocean, Colombia, at 7.25��N 78.90��W (Kramp 1959a). Habitat: bathypelagic species (Kramp 1959a)., 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 89, 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

Symplectoscyphus glacialis (J��derholm, 1904a) Distribution in South America: polyp���Atlantic Ocean, Argentina, from 34��S to 44��S (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 136, 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

Plumularia obliqua (Johnston, 1847) Distribution in South America: polyp���Atlantic Ocean, Brazil, at 23�� S 44.46�� W (Nogueira et al. 1997; 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 113, 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

Symplectoscyphus plectilis (Hickson & Gravely, 1907) Synonyms in the area: Sertularella plectilis ��� J��derholm 1917 [polyp]. Distribution in South America: polyp ��� Atlantic Ocean, Argentina, at 54.143��S 36.676��W in Puerto Leith (Blanco 1984a, 1994a). Habitat: polyp���from 20 to 65m depth (Blanco 1984a, 1994a)., 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 138, 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

Sertularella curvitheca Galea & Schories, 2012a Synonyms at the area: Sertularella polyzonias —Leloup 1974 p. 32; Galea 2007 p. 64–65; Galea et al. 2009a p. 339 [polyp]. Distribution in South America: polyp—Pacific Ocean, Chile, at Reloncaví Sound in Gulf of Ancud, and from 41.65°S to 49.18°S (Leloup 1974 p. 32; Galea 2007 p. 64–65; Galea et al. 2009a p. 339; Galea & Schories 2012a p. 38–40). Habitat: polyp—from 10 to 43m depth, on wood, polychaete tubes, calcareous bryozoans, dead gorgonians and sponges (Galea 2007 p. 64–65; Galea et al. 2009a p. 339; Galea & Schories 2012a p. 38–40).

Nemertesia vervoorti El Beshbeeshy, 2011 Synonyms in the area: Nemertesia vervoorti El Beshbeeshy, 1991 nomen nudum [polyp]. Remarks: the name Nemertesia vervoorti 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). However, according to Ramil & Vervoort (2006:129), the species may not be valid, because it is ���close to if not identical with Nemertesia ramosa (Lamarck, 1816); set apart by El Beshbeeshy (1991) because of the stronger development of the internodal septa and the bigger size of the hydrothecae���. Distribution in South America: polyp���Atlantic Ocean, Brazil to Argentina, from 30��S to 50��S (El Beshbeeshy 1991, 2011). Habitat: polyp���from 70 to 1000m 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 111, 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

Plumularia lagenifera Allman, 1885 Remarks: similar to Plumularia setacea (Linnaeus, 1758), but recently suggested to be distinct (Schuchert 2013). Distribution in South America: polyp���Pacific Ocean, Ecuador, from 0.1��S to 1.1��S in Gal��pagos Archipelago, at 14.25��S 76.17��W in Bahia Independencia, Peru, at 14.29��S 76.19��W in Isla Viejas, Chile, at Valpara��so (Fraser 1938a, 1938b, 1939, 1948; J��derholm 1903 p. 291���292; Calder et al. 2003). Habitat: polyp���from 9 to 128m depth, on algae (Fraser 1938a, 1938b, 1948; J��derholm 1903 p. 291���292; 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 pages 112-113, DOI: 10.11646/zootaxa.4194.1.1

Thyroscyphus ramosus Allman, 1877 Synonyms in the area:? Thyroscyphus torresii ���Ma��al 1973 [polyp];? Thyroscyphus vitiensis ���Ma��al 1973 [polyp]. Distribution in South America: polyp���Atlantic Ocean, Colombia, at Santa Marta coast, at La Goajira, Venezuela, at La Guaira, and at Los Testigos Island, Brazil, from 2.50��S to 4.50��S, from 6.80��S to 9.80��S, from 11.50��S to 18.70��S, at 21��S 40.25��W, from 22.50��S to 24��S (Allman 1888; Versluys 1899; Van Gemerden- Hoogeveen 1965; Vervoort 1967; Ma��al 1973; Bandel & Wedler 1987; Migotto 1996; Nogueira et al. 1997; Rosso & Marques 1997; Calder & Ma��al 1998; Migotto et al. 2002; Grohmann et al. 2003; Marques et al. 2006; Shimabukuro & Marques 2006b; Shimabukuro 2007; Campos & Alonso 2008, abstract; Maronna et al. 2008, abstract; Silveira & Morandini 2011; Miranda et al. 2015). Habitat: polyp���in estuarine regions and rocky shores, from intertidal zone to 36m depth, on algae, artificial reefs of tires, rocks, sand, shell hash, sandstone reef, sponges, wood pilings (Allman 1888; Versluys 1899; Bandel & Wedler 1987; Migotto 1996; Calder & Ma��al 1998; Marques et al. 2006; Shimabukuro & Marques 2006b; 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 133, DOI: 10.11646/zootaxa.4194.1.1

Hydrodendron caciniformis (Ritchie, 1907b) Synonyms in the area: Diplocyathus caciniformis ���Leloup 1935 [polyp]. Distribution in South America: polyp���Atlantic Ocean, at Bonaire Island (Leloup 1935)., 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

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

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

Scandia minor (Fraser, 1938a) Synonyms in the area: Bonneviella minor Fraser, 1938a; Calder et al. 2003 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, from 0.2��S to 0.6��S in channel between Isla Fernandina and Isla Isabela (Fraser 1938a; Calder et al. 2003). Habitat: polyp���on bryozoans, nullipores and rock, from 91 to 128m depth (Fraser 1938a; 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 79, DOI: 10.11646/zootaxa.4194.1.1

Cladocarpus sp. Distribution in South America: polyp—Atlantic Ocean, Colombia, at Santa Marta coast (Wedler 1975).

Nemertesia parva (Fraser, 1948) Synonyms in the area: Plumularia parva Fraser, 1948; Calder et al. 2003 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, at 0.39S 90.35W in Isla Daphne Chica (Fraser 1948; Calder et al. 2003). Habitat: polyp���on mud, from 128 to 146m depth (Fraser 1948; 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 110, 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

Acryptolaria operculata Stepanjants, 1979 Synonyms in the area: Acryptolaria patagonica El Beshbeeshy, 1991 nomen nudum; Acryptolaria patagonica El Beshbeeshy, 2011 [polyp]. Remarks: the name Acryptolaria patagonica 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). However, A. patagonica have been synonymyzed to Acryptolaria operculata Stepanjants, 1979 by Pe��a Cantero et al. (2007), and therefore, this is the valid name of the species. Distribution in South America: polyp���Atlantic Ocean, Argentina, from 38��S to 43��S (Stepanjants 1979; El Beshbeeshy 1991, 2011; Blanco 1994a; Blanco et al. 1994; Genzano 1994b; Genzano & Zamponi 1997). Habitat: polyp���from 98 to 980m depth (Stepanjants 1979; El Beshbeeshy 1991, 2011; Blanco 1994a; Blanco et al. 1994)., 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 81, DOI: 10.11646/zootaxa.4194.1.1

Acryptolaria sp. 2 Distribution in South America: polyp—Atlantic Ocean, Brazil, from 24°S to 26.50°S, at 29.21°S 47.92°W (Migotto et al. 2004). Habitat: polyp—on shells, nodules of calcareous algae, anthozoan corallum (Migotto et al. 2004).

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

Plumularia floridana Nutting, 1900 Synonyms in the area: Plumularia sinuosa Fraser, 1938a, 1948; Calder et al. 2003 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, from 0.77��N to 1.1��S in Gal��pagos Archipelago, at 2.19��S 80.90��W in Santa Elena Bay (Fraser 1938a, 1948; Calder et al. 2003); Atlantic Ocean, Brazil, from 2.50��S to 4.50��S, at 8.71��S 35.10��W, at 9.77��S 35.84��W, from 18.50��S to 25.20��S (Vannucci Mendes 1946; Vannucci 1949, 1951a; Migotto 1996; Grohmann 1997, 2006; Grohmann et al. 1997, 2003; Rosso & Marques 1997; Calder & Ma��al 1998; Marques et al. 2006; Shimabukuro 2007; Cangussu et al. 2010; Silveira & Morandini 2011; Fernandez et al. 2015; Miranda et al. 2015). Habitat: polyp���in estuarine regions and rocky shores, from 2 to 40m depth, on algae, fouling, ascidians, hydroids, mud, mussels, Rhizophora mangle roots, rocks, sand, shells, sponges, wood (Fraser 1938a; Migotto 1996; Calder & Ma��al 1998; Calder et al. 2003; Marques et al. 2006; Shimabukuro 2007; Fernandez et al. 2015; 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 112, 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

Zygophylax adhaerens (Fraser, 1938a) Synonyms in the area: Lictorella adhaerens Fraser, 1938a; Calder et al. 2003 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, from 0.35��S to 1.5��S in Gal��pagos Archipelago (Fraser 1938a; Calder et al. 2003). Habitat: polyp���on rock, at 219m depth (Fraser 1938a; 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

Orthopyxis integra (MacGillivray, 1842) Synonyms in the area: Campanularia integra��� J��derholm 1910 p. 3; Genzano & Zamponi 1997; Seo 2003 [polyp]. Remarks: species of the genus Orthopyxis from the southwestern Atlantic were recently reviewed by Cunha et al. (2015), who concluded that none of their records should be assigned to O. integra (MacGillivray, 1842). Therefore, the occurrence of this species in the area still needs confirmation. Since information is lacking for several records to be confidently assigned to the typical O. integra (see Cunha et al. 2015), we retain their original identification until more information is available about the status of the species in the region. Distribution in South America: polyp���Pacific Ocean, Chile, in Fitzroy Channel (J��derholm 1910 p. 3); Atlantic Ocean, Brazil, from 25.80��S to 26.80��S, Argentina, at 54.93��S 66.78��W and at 55.02��S 66.35��W, in Beagle Channel (J��derholm 1910 p. 3; Haddad 1992; Genzano & Zamponi 1997; Haddad & Chiaverini 2000, abstract; Oliveira 2003; Seo 2003; Menon et al. 2006, abstract; Bornancin 2008; Oliveira & Marques 2007). Habitat: polyp���from intertidal zone to 14m depth, on algae, mussels and hydroids such as Sertularella picta (J��derholm 1910 p. 3; Haddad 1992; Haddad & Chiaverini 2000; Oliveira 2003; Seo 2013; Menon et al. 2006; Bornancin 2008; Oliveira & Marques 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 158, DOI: 10.11646/zootaxa.4194.1.1

Aequorea coerulescens (Brandt, 1838) Distribution in South America: medusa���Pacific Ocean, Colombia to Chile, at 3.94��N 78��W, from 3.50��S to 43��S (Kramp 1966, 1968; Fagetti 1973 p. 39; Alvari��o 1976; Segura-Puertas 1984; Palma et al. 2011; Chirichigno, pers. comm.); Atlantic Ocean, Argentina, from 35��S to 44��S, and at the Malvinas (Falkland) Islands (Bigelow 1909a; Kramp 1957; Genzano et al. 2008a; Guerrero et al. 2013). Habitat: medusa���up to 128m depth (Kramp 1957)., 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 146-147, DOI: 10.11646/zootaxa.4194.1.1

Mitrocomella polydiademata (Romanes, 1876) Synonyms in the area: Cuspidella grandis ��� J��derholm 1920 p. 4 [non Cuspidella grandis Hincks, 1868] [polyp]. Remarks: This is a tentative identification since J��derholm (1920 p. 4) did not provide description or any additional information in the record of the species. Distribution in South America: polyp���Pacific Ocean, Chile, at Cape Valentyn in Strait of Magellan (J��derholm 1920 p. 4). Habitat: polyp���on bryozoans (J��derholm 1920 p. 4)., 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 145, DOI: 10.11646/zootaxa.4194.1.1

Sertularella implexa (Allman, 1888) Synonyms in the area: Sertularia implexa Allman, 1888; Genzano & Zamponi 1997 [polyp]; Sertularella ? implexa ���Galea & Schories 2012a p. 40���41 [polyp]. Distribution in South America: polyp���Pacific Ocean, Chile, at 53.78��S 70.97��W (Galea & Schories 2012a p. 40���41); Atlantic Ocean, Argentina, from 51��S to 53��S (Allman 1888; Genzano & Zamponi 1997). Habitat: polyp���at 40m depth, on Symplectoscyphus magellanicus and worm tubes (Galea & Schories 2012a p. 40���41)., 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 119-120, DOI: 10.11646/zootaxa.4194.1.1

Nemertesia septata (Fraser, 1938b) Synonyms in the area: Plumularia septata Fraser, 1938b, 1948 [polyp]. Distribution in South America: polyp���Pacific Ocean, Ecuador, at 14.25��S 76.17��W in Bahia Independencia, Peru, at 6.95��S 80.70��W in Isla Lobos de Afuera, at 12.01��S 77.21��W in Callao, at 13.63��S 76.41��W in Islas Chincha, at 14.29��S 76.19��W in Isla Viejas (Fraser 1938b, 1948). Habitat: polyp���from 9 to 14m 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 pages 110-111, 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

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

Hebella ? dispolians (Warren, 1909) Synonyms in the area:? Hebella cf. dispolians —Galea 2007 p. 51 [polyp]. Remarks: this species is insufficiently known and its gonotheca still has not been described. The specimens studied by Galea (2007) differ somewhat from the South-African material studied both by Warren (1909) and Millard (1975) in their dimensions and tentacle number—these materials may belong to different species. Moreover, fertile material and life cycle studies are needed to elucidate its taxonomical status. Distribution in South America: polyp—Pacific Ocean, Chile, at 49.18°S in Camello Island (Galea 2007 p. 51). Habitat: polyp—at 12m depth, on Symplectoscyphus filiformis (Galea 2007 p. 51).