[Cephalopoda] Elongate, fourth circumoral appendages of cuttlefishes and squids used to capture prey; located between ventrolateral (3rd) and ventral (4th) arm pairs, divided into a proximal stalk and a distal club; clubs generally expanded with arrangement of suckers (or hooks), stalks in adults commonly devoid of suckers (or hooks); stalks commonly devoid of suckers. In cuttlefishes tentacles can retract into pockets on the head, or (in squids) merely contract (Ce 1E).