Hey, just thought I'd share. Teine Sith is Gaelic for "Faerie Fire."
Above, it says this mob is weak to ice. I don't think this is accurate, though I haven't actually killed a Teine Sith by myself. Every bomb I've ever fought in FFXI is weak to Fire and pretty much nothing else. Resists are exceptionally high on ice-based spells, while fire-based magic is almost never resisted.
Looks like I might be sitting in Bibiki Bay for awhile to test this.