L. Agassiz, 1849

Description
Umbrella dome-shaped, with thick walls [Nemopsis bachei ]. Manubrium short, one-third as long as bell cavity. Mouth with four oral tentacles inserted above mouth opening, oral tentacles dichotomously branched 5-7 times.
Gonads situated on stomach pouches extending along radial canals; gonads ribbon-like, with curtain-like folds, extending at least two-thirds towards bell margin.
Four cleft marginal tentacular bulbs each with a group of tentacles of two kinds; up to 14 filiform tentacles and a short median pair bearing a terminal cluster of nematocysts each. With large dark ocelli.

Size
Umbrella up to 11 mm high.

Distribution in the North Sea
Coastal in southern and northern North Sea.

World distribution
Northwest European coastal waters.

Remark
Hydroid probably unknown.

[After Russell, 1953b; Kramp, 1959]

Kingdom Animalia
Phylum Cnidaria
Superclass Hydrozoa
Class Leptolida
Subclass Anthoathecatae
Order Filifera
Family Bougainvillidae
Genus Nemopsis
Species Nemopsis bachei

Status in World Register of Marine Species

Accepted name: Nemopsis bachei Agassiz, 1849

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

Fraser, J.H., 1972. The distribution of the Medusae in the Scottish area. Proceedings of the Royal Society of Edinburgh (B) 74(1): 1-25.

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., 1953b. Hydromedusae. Families: Pandeidae and Tiarannidae. Fiches d'Identification du Zooplancton, 51 (1953). Conseil International pour l'Exploration de la Mer, Kopenhagen.

Tulp, A.S., 2002. Waarnemingen aan de hydromedusen Nemopsis bachei (L. Agassiz) en Eucheilota flevensis van Kampen. Het Zeepaard 62(3): 89-96.

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