Hectocotylus

A hectocotylus is a modified arm used to by male cephalopods to put sperm on females.

Hectocotylus Media

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  Georges Cuvier's original illustration of an octopus hectocotylus. Mistaking it for its own separate organism, he named it Hectocotyle octopodis.

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  Abraliopsis morisi hectocotylus

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  Argonauta bottgeri hectocotylus-2

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  Hectocotyle by Georges cuvier. The name "hectocotylus" was devised by Georges Cuvier, who first found one embedded in the mantle of a female argonaut; supposing it to be a parasitic worm, Cuvier gave it a generic name.

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  Bathypolypus arcticus hectocotylus-2

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  Graneledone verrucosa hectocotylus

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  Haliphron atlanticus hectocotylus

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  Ocythoe tuberculata hectocotylus

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  Scaeurgus patagiatus hectocotylus-2

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  Tremoctopus violaceus