Filament 8 is not a confirmed bone candidate, failing to satisfy our \(50:1\) minimum aspect ratio criterion. Otherwise, it moderately or strongly satisfies the other five criteria. It lies exactly on and parallel to the physical Galactic midplane. Though it lies about 6-8 km/s from the Scutum-Centaurus arm, its exhibits a similar velocity gradient and traces a prominent peak of CO emisson in p-v space.