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On a squid, the inside surfaces of the arms and tentacles are lined with hundreds of sub-spherical suction cups, Each is mounted on a stalk. Each arm and tentacle is divided into three regions: carpus, manus, and dactylus. The carpus has a dense cluster of cups, in six or seven irregular, transverse rows. The manus is broader, close to the end of the arm, and has enlarged suckers in two medial rows. The dactylus is the tip.

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