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Trinchesia purpureoanulata (Baba, 1961) [Catriona]

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Trinchesia purpureoanulata is characterized by a translucent whitish body with opaque white and purple markings. Distinctive is a swelling with a broad opaque white band in the upper third of the cerata, at the outer end of the ceratal swelling is a yellow ring, followed by a subapical thin purple ring, the apices are translucent purple. The smooth rhinophores are basally translucent then opaque white, with 2 broad purple bands. The oral tentacles are basally translucent purple, followed by a purple band, the outer half is opaque white.
It was originally placed by Baba in the genus Catriona.