(Chun, 1897)
Description
Anterior nectophore [Dimophyes arctica ]: without lateral ridges. The nectosac often becomes opaque on preservation. The prominent undivided mouth plate is triangular in shape and the large hydroecium extends above the ostial level. The carrot-shaped somatocyst is about two thirds of the height of the nectophore.
Posterior nectophore [D.arctica-postnec/eudox ]: Seldom found and much reduced. The deep hydroecium is bounded by two broad wings. The nectosac opens on to the baso-dorsal surface.
Eudoxid [D.arctica-postnec/eudox ]: the bract is conical with an extensive, thin neck shield. The phyllocyst has apical and lateral horns and a fine basal process, which passes down the neck shield. The gonophore has a very small mouth plate and only traces of a hydroecium.
Size
Anterior nectophore up to 15 mm in height.
Eudoxid up to 10 mm in height.
Depth range
Occurring mainly at depths of 200-600 m or below 900 m.
Distribution in the North Sea
Northern North Sea.
World distribution
Dimophyes arctica has a widespread distribution with a slight prevalence for colder waters.
[After Kirkpatrick and Pugh, 1984]