Cycloteuthis

Cycloteuthis is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus Discoteuthis by the presence of a tail on the mantle. The species C. akimushkini is currently considered a junior synonym of C. sirventi, however this is inconclusive and the World Register of Marine Species has C. akimushkini as a valid species.^[1]

Cycloteuthis
Cycloteuthis sirventi
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	Oegopsida
Family:	Cycloteuthidae
Genus:	Cycloteuthis Joubin, 1919[1]
Type species
Cycloteuthis sirventi Joubin, 1919
Species
Cycloteuthis akimushkini Filippova, 1968 Cycloteuthis sirventi Joubin, 1919

The genus contains bioluminescent species.^[2]