http://www.medslugs.de/E/Med/Philinopsis_depicta.htm
http://www.ugr.es/~lstocino/philinopsis_depicta.htm
http://digilander.iol.it/netofotosub/Pagine/philin.htm
http://www.seaslugforum.net/factsheet.cfm?base=agladepi
http://www.medslugs.de/E/Atl-W/Philinopsis_depicta.htm
http://www.nudipixel.net/species/philinopsis_depicta/