Full Idea
Species and genera are largely irrelevant to the program of 'Metaphysics'.
Gist of Idea
Species and genera are largely irrelevant in 'Metaphysics'
Source
report of Aristotle (Metaphysics [c.324 BCE], kind) by Michael V. Wedin - Aristotle's Theory of Substance III.10
Book Reference
Wedin,Michael V.: 'Aristotle's Theory of Substance' [OUP 2000], p.121
A Reaction
The idea seems to be that Aristotle is seeking tools for getting at the primary being of a thing, and the notion of 'form' strikes him as a better account, because it explains the genera and species, rather than just naming them.