http://members.aol.com/westaslugs/Cephalaspids.html
http://www.bluering.org.au/Opisthobranchs-PointAddis4877.htm
http://www.nudibranch.com.au/pages/366e-copy.htm
http://www.dragonmouse.com.au/diving/nudibase.php?action=nudidetail&id=185