I haven't got round to doing his bio yet.
Primates there are four.
As can be seen, Linneus wrote in Latin, the standard intellectual language of the time. And concepts like evolution were alien to him. For Linneus and his contemporaries, the world and all it's creatures was created once and for all, by the Judaeo-Christian God . As time progressed changes were made. The rank of Empire is obviously superfluous, while Variety came to be used only by gardeners, insect collectors, etc.