Leach, 1817
Inner shell reduced, chitinous. Body rounded; fins paired, lateral, not extending whole length of body, not meeting posteriorly. Male with left, or both left and right, dorsal hectocotylous arm.
Source: Hayward, 1990.
The following subtaxa of this family occur in the region:
Genus Rissoa
Rissoa lilacina
Rissoa membranacea
Rissoa parva
Rissoa porifera
Genus Rossia
Rossia macrosoma
Rossia palpebrosa
Genus Sepietta
Sepietta neglecta
Sepietta oweniana
Genus Sepiola
Sepiola atlantica
Sepiola aurantiaca