December 4, 2002
From: Shigeru Hayashi
Here are some photos of Marionia olivacea which was promised before.
It was collected from a fishing net with 30 - 50 meter depth. Those individuals were provided by The Notojima Aquarium.
Data: Toyama Bay, The Japan Sea, 30-50m, July, 13-24. 2002
I think M. olivacea resembles the Atlantic species M. blainvillea.
• Baba, K. (1937) A New Species of the nudibranchiate genus Marionia from Sagami Bay, Japan. Venus, Jap. Jour. Malac., 7(3): 115-120.
• Baba, K. (1949) Opisthobranchia of Sagami Bay, collected by His Majesty Emperor of Japan. Iwatani Shoten, Tokyo, 86-87.
Shigeru Hayashi (Takaoka Biological Club)
Hayashi, S., 2002 (Dec 4) Marionia olivacea from the Japan Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8070
Thanks for this addition to the Forum. In both of Baba's description he notes the colour as being 'generally olive in colour' so these photos give us a much better idea of this species' colours. Your photos fit one of the illustrations in Baba, 1949 (Pl.34, fig. 126) very well.