Günther, 1903
Description
Umbrella about as high as wide; jelly thick [Bythotiara murrayi ]. Usually four radial canals, bifurcating (at least once); centripetal canals absent.
Gastric peduncle absent, manubrium small; mouth with four simple lips. Manubrium with four interradial gonads with transverse furrows.
Long hollow tentacles without basal swellings, similar in number to the radial canal endings, tentacles terminating in a large nematocyst cluster; some small secondary and minute dwarf-tentacles [B.murrayi-habitus ].
Size
Umbrella up to about 20 mm wide and high.
Depth range
Deep-water species.
Distribution in the North Sea
Skagerrak, Norwegian coast.
World distribution
Circum-(sub)tropical.
Remark
Hydroid probably unknown.
[After Russell, 1955; Kramp, 1959; Kramp, 1961]