http://www.seaslugforum.net/showall/vercverc
http://www.dragonmouse.com.au/diving/nudibase.php?action=nudidetail&id=5
http://slugsite.us/bow2007/nudwk879.htm
http://www.medslugs.de/E/Pac-SW/Verconia_verconis/Selection.htm