Aeginopsis laurentii Brandt 1838

A four tentacled jelly sometimes abundant on Arctic shelves

Holplanktonic, with an identifiable "larval" stage; generation time likely one year, life expectancy unknown

Diet is unknown, but other narcomedusae are known to feed primarily on other gelantinous taxa

clear translucent; 4 prominent tentacles emerge well above the bell margin; 4 stomach pouches per quadent

Arctic and sub-arctic; usually found on shelves, less commonly in offshore waters, but no deeper then 500 m; damaged speciemens easily confused with confused with the new species Bathykorus bouilloni which is restricted to deeper waters

This is a widespread arcto-boreal euro-bathic oceanic species.

Aeginidae with 16 stomach pouches; no peripheral canal system; four primary tentacles and eight peronia; no secondary tentacles on the umbrella margin; sensory clubs with no otoporpae.

Hemispherical umbrella with thick apical jelly. Broad, lenticular stomach with sixteen rectangular pouches; the eight primary pouches are deeply cleft. Four large primary tentacles issuing from very high level. Eight peronia. Two or three sensory clubs in each octant. Umbrella up to 25 mm wide.

East Pacific; Western Atlantic Ocean; Arctic Ocean

Found in cold and less saline waters.

Common Arctic and sub-Arctic jellyfish. Bell flattened, four tentacles originate from the top of the bell. Body colorless.

Oceanic, Arctic species. Found in all Arctic and sub-Arctic seas.

Body colorless.

Umbrella flattened. Dense tentacles originate from the top surface of the umbrella. The manubrium takes up most of the subumbrella surface, mouth opening round. 16 gastric pouches have small projections toward the outside. Gonads are located on the bottom surface of the gastric pouches; they fuse in their proximal parts and form a continuous ring, which surrounds the central part of the manubrium.

Diameter 15-20 (sometimes up to 25) mm

direct development

Aeginopsis medusa up to 25 mm wide, hemispherical or somewhat conical, apex thick, lateral walls very thin. Stomach broad, lenticular; 16 rectangular stomach pouches (eight primary pouches deeply cleft). 4 large primary tentacles issuing at a very high level; 4 perradial and 4 interradial peronia. No peripheral canal system; 2-3 statocysts in each octant.

surface to deep water