There is a gold/yellow "Q" icon that means you need to kill those mobs for a quest. There's also one that looks like a couple of curves, and that means it's a mob that's in your hunt registry.
I've also seen an icon that looks like a bluish sunburst or star (not sure how else to describe it). I haven't been able to figure out exactly what that icon means yet.
Lyonheart, like Eorzia, will be reborn in FFXIV!
FFXI veteran (Lyonheart and Lakiskline of Lakshmi)
1/467 on signed HQ Weskit!!!