lol
I'm less sure every time I look at it which one it is! It could be H. imbricata or Gattyana cirhosa, it's really not very easy to tell without seeing the scales and chaetae under a microscope.
I can see a black dot like marking running down its back (underneath the scales) which reminds me of G. cirhosa, but I cant remember if many other species have a similar pattern. I'll have a look in the scale worm book at work tomorrow and our reference collection, its really going to bug me other wise!