Pseudocerotidae sp. 19  Family: Lang, 1884

Click the thumbnail photos to enhance!

I had been scanning through all websites on MARINE FLATWORMS, but I did not find a picture of a similar species, maybe there are some pictures at NUDIPIXEL within the -as of 28 October 2012- 632 Unidentified polyclad flatworm pictures.
I label it Pseudocerotidae sp. 19, because my best guess is that it should be placed in the family Pseudocerotidae  Lang, 1884.
It is characterized by its orange/tan background colour, by irregular white lines coveing the body, and by alternating black and white patches at the mantle margin.