onycoteuthidæ

from The Century Dictionary.

• noun A family of decapodous cephalopods of world-wide distribution. They have a cylindrical body with terminal or lateral fins, very long tentacular arms, the sessile or tentacular arms furnished with retractile hooks, and the gladius lanceolate with a terminal cone. The family contains Onycoteuthis, Gonatus, Ancistrochirus, and several other genera.