Halitrephes maasi Bigelow, 1909a

Distribution in South America: medusa—Pacific Ocean, Chile, from 18.50°S to 34.94°S (Kramp 1966; Fagetti 1973 p. 43; Palma 1994; Palma & Rosales 1995; Palma & Apablaza 2004); Atlantic Ocean, Uruguay, Argentina, from 35.74°S to 52.68°S (Ramírez & Zamponi 1980, 1981; Zamponi 1983a; Genzano et al. 2008a).

Habitat: medusa—widely distributed species (Zamponi 1983a).