Geryonia Péron & Lesueur, 1810

Schuchert, Peter & Collins, Richard, 2021, Hydromedusae observed during night dives in the Gulf Stream, Revue suisse de Zoologie 128 (2), pp. 237-356 : 336

publication ID	https://doi.org/ 10.35929/RSZ.0049
DOI	https://doi.org/10.5281/zenodo.5640123
persistent identifier	https://treatment.plazi.org/id/D0118A7C-5B68-0070-FC42-FE97FC277BD7
treatment provided by	Felipe
scientific name	Geryonia Péron & Lesueur, 1810
status

Treatment

Genus Geryonia Péron & Lesueur, 1810 View in CoL View at ENA

Geryonia Péron & Lesueur, 1810: 329 View in CoL ,

type species Geryonia hexaphylla Péron & Lesueur, 1810 View in CoL .

Carmarina Haeckel, 1864b: 466 View in CoL ; type species Carmarina hastata Haeckel, 1864 View in CoL by monotypy.

Geryones Haeckel, 1879: 293 View in CoL ; type species Geryones elephas Haeckel, 1879 View in CoL by monotypy.

Carmaris Haeckel, 1879: 296 View in CoL , no type species designated.

Diagnosis: Limnomedusae with gastric peduncle; stomach small, with 6 lips; 6 radial canals, with additional centripetal canals; 6 gonads on radial canals, flattened and leaf-shaped; two kinds of marginal tentacles, solid and hollow; ecto-endodermal statocysts enclosed in mesoglea. No polyp stage, direct developement.

Remarks: Geryonia hexaphylla Péron & Lesueur, 1810 , a synonym of Medusa proboscidalis Forsskål, 1775 , was selected by Haeckel (1879) as type of the genus. Mayer (1910: 424) and Kramp (1961) give as type species Medusa proboscidalis Forsskål, 1775 for this genus, but this is incorrect as the name was not part of the original nominal species included in Geryonia by Péron & Lesueur.