I thought that initially in the context of the first excerpt (and that's how I'd most likely rule it, fwiw). "Unique" here could mean "one of a kind".Specific is not the same as unique. Unique would be like Demogorgon.
"Unique" here could mean "one of a kind".
1) You can call a unique being, but it need not answer
2) You can call other beings
2a) you can call a known being by name
2b) you can call a type of being
If "known individual" and "unique being" meant the same thing, presumably they would just use the same phrase twice.
The "instead of" is what's drawing the distinction between "kind of being" and "a known individual", which arguably refers back to the "unique" beings of the previous paragraph. This explicitly excludes item#2a, imho. But I'm not going to belabor the grammar or semantics anymore, mainly because I actually disagree with my proposed interpretation!SRD said:If you choose to call a kind of creature instead of a known individual you may call either a single creature (of any HD) or several creatures.
"Frodo is a unique hobbit."
That's a perfectly valid use of the word "unique" that doesn't require the existence of only one hobbit. It means "notable" or "extraordinary", in the sense that he is a "one of kind" among the hobbits.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.