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Vaissière, 1904

Small species; maximal body length 20 mm. Shell is imbedded in the tissues of the digestive gland, and consists of a protoconch and teleoconch represented as a single whorl, which is mostly incomplete. Eight gills present; much smaller than in Cardiapoda placenta and located at the entrance to the mantle cavity. Body covered by scattered, opalescent pigment spots. A large and darkly-pigmented, fan-shaped structure arises ventrally from the end of the trunk. This conspicuous structure immediately distinguishes this species form Cardiapoda placenta. Tail short, with a very long filamentous extension. Sucker on swimming fin only present in males (e.g. as in Pterotrachea species).

Cardiapoda richardi