(That can't be right, because in GoF, Luna sat with the Golden Trio.)
Scabior ignored them all. He was too busy thinking about what the Dark Lord had said when he had been called form the Hogwarts Express. This was causing him to silently evaluate every and all the students that passed him, deciding in his mind whether they looked strong enough. Sunconciously, the brown-haired Sytherin rubbed his left wrist where the Dark Mark was.