I have a book forthcoming, Species definitions: a sourcebook from antiquity to today, which gives and commentates definitions of “species” in logic and biology for 2,500 years, from Plato to Templeton and beyond. It’s designed as a reader for scholars to see how the notion[s] have evolved separately in the logical definitional sense – for Aristotle, eidos, which we translate as “form”, “species”, and “kind”, was a logical term, not a biological one, which had to wait until the 16th century, and even then they were distinct notions.
I argue in the commentaries that there was nothing essentialist about the use of “species” in natural history and the later biology. And that type does not equal essence. And that fixism of species was motivated by piety rather than logic or metaphysics. I thereby offend a number of friends, but that’s life.
Keep an eye on the catalogue for Peter Lang publishers. It’ll probably be about US$50