Tenellia foliata (Forbes & Goodsir, 1839) [Eolida]

http://www.habitas.org.uk/marinelife/species.asp?item=W14690
http://www.nembro.info/Nudibranchia/uk_cuthona_foliata1.html
http://www.medslugs.de/E/Atl-E/Tenellia_foliata/Selection.htm
http://opistobranquis.info/en/guia/nudibranchia/dexiarchia/aeolidida/cuthona-foliata/
http://www.medslugs.de/E/Med/Tenellia_foliata/Selection.htm