The Bone syrinx is a trinket obtained in booty divisions from the Cursed Isles. It was first seen in release 2009-12-08. It is an extremely rare type of Cursed Isle trinket. The Bone syrinx is available in all the colors of the Cursed Isles trinket palette.
Note: A booch was made in the initial release allowing this trinket to potentially be found in all cloth colors save persimmon. This was fixed in release 2009-12-10. All trinkets that had already been won remained unchanged irrespective of color, but future trinkets could only be won in CI-palette colors. All colors known to exist may be seen here.