Halgerda from Madagascar
October 22, 2009
From: Sylvain Le Bris
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Dear Bill,
I think this Halgerda formosa but I am not sure.
Locality: Nosy Be, 20 m, Madagascar, Indian Ocean, Julu 2009. Photographer: Sylvain LE BRIS.
Sylvain Le Bris
lebris.sylvain@gmail.com
Le Bris, S., 2009 (Oct 22) Halgerda from Madagascar. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22682![](/images/m22682d.jpg)
Dear Sylvain,
This belongs to a puzzling group which I am not certain we have completely sorted out at present. It certainly seems to fit what I suspect is part of the colour variation of H. formosa [see message #11824] There seems to be at least one black spot on the posterior part of the foot, and although I can't be sure from the angle of your photos it does seem to have black lines down the dorsal edges of the gills. It definitely has the fine white line along the mantle edge which I suggest in the earlier message is characteristic of this species.
Best wishes,
Bill Rudman
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