Pseudocerotidae sp. 14  Family: Lang, 1884

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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 at NUDIPIXEL within the -as of 23 September 2012- 627 Unidentified polyclad flatworm pictures.
I label it Pseudocerotidae sp. 14, because my best guess is that it should be placed in the family Pseudocerotidae  Lang, 1884.
It is characterized by a mottled tan-brownish colour with numerous whitish spots of varying sizes, and by the concentration of dark brown pigment near the mantle margin.