Poor Judge of Pasta.
Thought this was a Yellow-line Quaker when I first saw it last night, but was sufficiently doubtful to pot it and pop it in the fridge for a better look later. Still unsure, so I'll keep it another night and check it out (and photograph it) in natural daylight tomorrow as I'm not in work. Some of the faint wavy cross-lines put me in mind of Brick, but as it's so worn (and would be a new species for me) I'm hesitant to make the call. I'll post the daylight pics tomorrow, but in the mean time, any takers?