White stomatella, flatworm or ????

[T-J]

So, I saw this guy crawling on the glass today. It definitely doesn't appear to be a flatworm (none that I've ever seen).
It kind of looks like a baby Stomatella, but I don't see a shell on it.

 

[sfin52]

Stomeatella

 

[Reef Tripp]

Stomatella