Okenia barnardi from Hong Kong
January 12, 2002
From: Bill Rudman & Brian Darvell
To accompany Bernard Picton's photos, here is some information and photos on Okenia barnardi from Brian Darvell's Hong Kong collections.
The mantle is pale brown darkening to a deep brown band around the edge with scattered white spots. There is a single row of long colourless papillae around the mantle edge, tipped with white, and a single papilla in the centre of the back. The gills and elongate rhinophore clubs are a watery brown with dark brown edging. The foot is translucent clear. It grows to 10 mm long.
PHOTO: UPPER: AM C149770, 4 specimens, 16 March 1986, Site 11.87, South Ninepin (SE), 19 m. Depth range: 4-19 m. LOWER: AM C139081, 2 specimens, 8 April 1983, Site 5.51, Heung Lo Po, Tolo Channel (Gruff Head), 5-10 m. Photos: Brian Darvell.
Hong Kong Collection Records:
AM C139081, 2 specimens, 8 April 1983, Site 5.51, Heung Lo Po, Tolo Channel (Gruff Head), 5-10 m. AM C139082, 2 specimens, 10 April 1983, Site 4.57, Bate Head, Mirs Bay, 5-10 m. AM C139083, 14 April 1983, Site 2.66, Round Is. (W), Mirs Bay, 3-6 m. AM C139084, 2 specimens, 19 April 1983, Site 4.8, Breaker Reef, Mirs Bay, 5-16 m. AM C149770, 4 specimens, 16 March 1986, Site 11.87, South Ninepin (SE), 19 m. Depth range: 4-19 m.
Reference:
• Rudman, W.B. & Darvell, B.W. (1990) Opisthobranch molluscs of Hong Kong. Part 1. Goniodorididae, Onchidorididae, Triophidae, Gymnodorididae, Chromodorididae, (Nudibranchia). Asian Marine Biology, 7: 31-79
Best wishes,
Bill Rudman & Brian Darvell
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