Young and Roper, 1968
Small squids with narrow spindle-like mantle tapering into long thin tail which in juveniles may as long as other part of mantle. Head very small and narrow. Fins short and narrow, heart-shaped or transverse-oval, located before beginning of tail. Arms short, thin, with 2 rows of suckers. Tentacles thin, long, club not widened, suckers located in 6 rows along almost whole length of tentacle. No fixing apparatus. Buccal membrane with 7 lappets, connectives to 4th arms attached ventrally. Funnel cartilage simple, straight, slightly curved. Gladius narrow, stick-like, with long conus. Photophores unreported. Larvae undescribed, juveniles characterized by narrow mantle, very small fin, long tail, and shape of club. ML up to 27 cm.