Characteristics

Richard E. Young

Characteristics

Tentacles

Clubs with suckers only.
Tentacular stalks with two series of suckers and pads nearly to stalk base.

Funnel

Funnel valve absent.
Funnel organ: Dorsal pad with 3 slender papillae.
Funnel extremely large.

Figure. Side view of H. pfefferi, showing the large funnel and small arms. Photograph by M. Vecchione.

Mantle

Tubercles absent from funnel-mantle fusion.

Fins

Fins paddle shaped.
Fins insert on short rostrum of gladius which projects dorsally in advance of mantle apex (photographs below).*

Figure.

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