Oxynoe olivacea  Rafinesque, 1819

http://www.medslugs.de/E/Med/Oxynoe_olivacea/Selection.htm
http://www.seaslugforum.net/showall/oxynoliv
http://www.gastropods.com/9/Shell_21189.html
http://opistobranquis.info/en/guia/sacoglossa/oxynoe-olivacea/