Mitrocomella polydiademata (Romanes, 1876)

Synonyms in the area: Cuspidella grandis —Genzano & Zamponi 1997 [polyp].

Distribution in South America: medusa—Pacific Ocean, Chile, from 53°S to 55.84°S (Pagès & Orejas 1999); Atlantic Ocean, Argentina, at the Strait of Magellan (Genzano & Zamponi 1997; Pagès & Orejas 1999).