what is the definition of this latter mentioned profession?
is an individual whose knowledge spans a significant number of subjects, known to draw on complex bodies of knowledge to solve specific problems.
Polymath
A polymath (, "", "having learned much"; Latin: "homo universalis", "universal man") is an individual whose knowledge spans a significant number of subjects, known to draw on complex bodies of knowledge to solve specific problems. 
how many species have been named in the order coleoptera 400,000 species. what is this species? They are insects. where did they get their name from? It comes from the Greek word "koleopteros",  given to the group by Aristotle for their elytra, hardened shield-like forewings, from "koleos", sheath, and "pteron", wing. who is this aforesaid person? He was a Greek philosopher and polymath.
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Polymath [SEP] Introduction
A polymath (, "", "having learned much"; Latin: "homo universalis", "universal man") is an individual whose knowledge spans a significant number of subjects, known to draw on complex bodies of knowledge to solve specific problems. The earliest recorded use of the term in English is from 1624, in the second edition of "The Anatomy of Melancholy" by Robert Burton; the form "polymathist" is slightly older, first appearing in the "Diatribae upon the first part of the late History of Tithes" of Richard Montagu in 1621. Use in English of the similar term "polyhistor" dates from the late sixteenth century. In Western Europe, the first work to use polymathy in its title ("De Polymathia tractatio: integri operis de studiis veterum") was published in 1603 by Johann von Wowern, a Hamburg philosopher.