Rhopalonema velatum Gegenbaur, 1856a

Synonyms in the area: Phopalonema velatum —Navas-Pereira 1981 [incorrect subsequent spelling]; Rophalonema velatum —Palma et al., 2011 [incorrect subsequent spelling] [medusa].

Distribution in South America: medusa—Pacific Ocean, Colombia to Chile, from 20°N to 55.84°S (Kramp 1961, 1966; Fagetti 1973 p. 45; Alvariño 1976; Segura-Puertas 1984; Cely & Chiquillo 1993; Pagès & Orejas 1999; Palma & Apablaza 2004; Apablaza & Palma 2006; Baldrich 2007; Palma et al. 2007a p. 70, 2007b p. 74, 78, 80, 2011; Villenas et al. 2009; Pavez et al. 2010; Bravo et al. 2011); Atlantic Ocean, Colombia to Argentina, from 10.42°N to 55.84°S, and at Strait of Magellan (Vannucci 1957b; Alvariño 1968; Navas-Pereira 1974; Moncaleano & Niño 1976; Goy 1979; Navas-Pereira 1980, 1981; Ramírez & Zamponi 1980, 1981; Correia 1983; Zamponi 1983a, 1985; Pagès & Orejas 1999; Migotto et al. 2002; Genzano et al. 2008a; Nascimento 2010; Silveira & Morandini 2011; Bonecker et al. 2014; Nogueira Jr. et al. 2015b).

Habitat: medusa—species widely distributed between boreal and subantarctic waters, epipelagic (Pagès & Orejas 1999; Bonecker et al. 2014).