Steenstrup, 1857
Body cylindrical, with a rhombic terminal fin on posterior third of mantle. Anterior dorsal edge of mantle straight, not produced as a lobe. Funnel in a deep pit. Arms stout, twice the length of the head, each with two rows of suckers. Tentacle club with four rows of suckers, those of the central rows larger than the marginal series.
Source: Hayward, 1990.
The following subtaxa of this family occur in the region:
Genus Illex
Illex coindetii
Genus Ommastrephes
Ommastrephes bartramii
Genus Todarodes
Todarodes sagittatus
Genus Todaropsis
Todaropsis eblanae