Even if they meant species, as of that point in time, that's still got to include a Betazoid, a Klingon, at least 1 Vulcan, a butt ton of Humans, & could also possibly even include an El-Aurian, an Android, & potentially the Bolian barbers. That's not leaving a whole lot of room for more diversity, seeing as all of the above are mostly just one individual representative that we've seen.
I'd have given anything to see them just drop some green paint on somebody, just so I'd know there was an Orion kicking around or something. They did get better at it later on, like the hair dying character in the salon in Data's Day, or that keyboardist in Riker's jazz band from Second Chances, etc...