The phrase οὑκ τῶν Κρωβύλων relies on a specific comic convention where the genitive plural of a deme name (Κρωβύλων, from Κρωβύλος) functions as a shorthand for 'a man from the deme of Kroboulos.' This construction is standard in Old Comedy for identifying characters by their deme (a form of prosopographical shorthand), but the elision of the preposition ἐκ or the article οἱ before the genitive is a metrical necessity here, not a generic grammatical feature. The reference to Amynias, son of Sello, specifically contrasts his identity with the notorious Krobouloi, a deme known in Aristophanic comedy for producing litigious or unruly characters (cf. Lysistrata 126, where the Krobouloi are mentioned in a similar context of civic friction). This is not merely a geographical tag but a loaded allusion to the specific social reputation of the Krobouloi within the Athenian political imagination of the 5th century BCE.