Browne, 1903

Description
Umbrella about as high as wide, with small apical projection [Homoeonema platygonon ]. Gastric peduncle absent, manubrium narrow; without centripetal canals.
Gonads forming a continuous band around base of manubrium and extending outwards along proximal half of eight radial canals.
About 80 or more marginal tentacles, all alike and evenly distributed; four vesicular marginal statocysts.

Size
Umbrella 1-2 mm wide and high.

Ecology and depth range
Meropelagic; neritic; continental slope.

Distribution in the North Sea
Norwegian fjords in Bergen area.

World distribution
North Atlantic Ocean, Mediterranean Sea; Arctic Ocean; W South Atlantic (?) and Indo-Pacific Oceans.

Remark
Polyp stage absent.

[After Russell, 1953a; Kramp, 1959; Bouillon, 1999]

Kingdom Animalia
Phylum Cnidaria
Superclass Hydrozoa
Class Leptolida
Subclass Trachymedusae
Family Rhopalonematidae
Genus Homoeonema
Species Homoeonema platygonon

Status in World Register of Marine Species

Accepted name: Homoeonema platygonon Browne, 1903

Sorry, there are no scientific synonyms and common names available for this species

Bouillon, J., 1999. Hydromedusae. In: D. Boltovskoy (ed.), South Atlantic Zooplankton, Vol. 1. Backhuys Publishers, Leiden, The Netherlands, pp. 385-465.

Kramp, P.L. and D. Damas, 1925. Les Méduses de la Norvège. Videnskabelige Meddelelser fra Dansk naturhistorisk Forening i København 80: 217-323.

Kramp, P.L., 1959. The hydromedusae of the Atlantic Ocean and adjacent waters. Dana Report 46: 1-283; 2 plates, 335 text figures.

Russell, F.S., 1953a. The medusae of the British Isles. Anthomedusae, Leptomedusae, Limnomedusae, Trachymedusae, and Narcomedusae. Cambridge University Press, 530 pp. 319 figures, 35 plates.

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