Physical Characteristics

Mantle is short, and rounded toward the rear. Fins are broadly separated toward the rear, with free anterior and posterior lobes. The gladius is rudimentary. There is a median mantle septum with strong adductor muscles. The eye is covered by a cornea; there is a ventral eyelid present. The arms lack protective membranes. The dorsal mantle is fused to the head; the area of fusion is narrower than the width of the head. Posterior edges of fins do not extend beyond posterior mantle. Ventral shield of mantle does not extend beyond middle of eyes. Males have enlarged suckers on their dorsolateral arms.

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