April 11, 2000
From: Narongpon Sittithaweepat
Concerning your earlier comments, I think it isn't Halgerda because it has gill between notch and foot. I think it is Reticulidia sp.
firstname.lastname@example.orgSittithaweepat , N., 2000 (Apr 11) Reticulidia not Halgerda. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2246
You are quite right. If it has the gills underneath the mantle as you describe it is clearly not Halgerda.
For those of you unfamilar with the gills in phyllidiids I have included here a photo showing the secondary gill leaflets of Phyllidia ocellata which, like all phyllidiids, form a band down each side of the body beneath the mantle skirt.
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From: Narongpon Sittithaweepat, April 10, 2000