Body conical, acute posteriorly. Fins very long and wide, reaching or barely short of anterior margin and posterior end of mantle, joined dorsally along longitudinal midline. Arms with two rows of hooks covered by skin sheath. Tentacles only in larvae and early juveniles, lacking in adults. Buccal membrane with 6 lappets, connectives to 4th arms attached ventrally. Funnel cartilage straight, elongated, widened posteriorly. Gladius with wide vane, beginning near anterior end. With photophores. Two genera, at least 6 species in the Atlantic Ocean.
Planctonic stages recorded for: