[1] cf. Diogenianus 3.93, etc. Chalkis [Myth, Place] [chi 41] was one of the two main cities on the island of Euboia in the Archaic and Classical periods (Eretria being the other). The headwords are both present-tense verbs formed from the names of the inhabitants.
[2] The word used for "engage in pederasty", fikidi/zein (or in one manuscript fakidi/zein) occurs only in the Suda; see also phi 292, phi 293. In the corresponding entry, Photius has e)pi\ tw=n glisxreuome/nwn kai\ filargurou/ntwn, w(s *)Aristofw=n e)n *didu/mois te/taxen, e)/nioi de\ to\ xalkidi/zein e)pi\ to\ paiderastei=n ktl. ('Aristophon' = A. fr.3 Kassel-Austin.) Theodoridis in his edition of Photius (vol. II p. XXXIII), following K. Tsantsanoglou, suggests that the Suda compiler was using a text of Photius where the words from -largurou/ntwn to e)/nioi de\ to\ xal- had dropped out, so that fi- and -kidi/zein came together to form a nonsense word fikidi/zein, which was then given an entry of its own at phi 292. This would also be evidence of the Suda-compiler's reliance on Photius.
[3] i.e. the Chalkidians.
[4] For rhotacism see generally rho 269. Buck (143) identifies intervocalic rhotacism (/s/ > /r/) as a feature seen in Eretrian dialect, but not in Chalkidian (or Ionic in general).