[1] = Synagoge sigma106, Photius sigma281 Theodoridis; cf. Hesychius sigma860, as well as the following for which the ultimate origin may be Philoxenus (fr. 593): Orion [Author, Myth] 149, Etymologicum Gudianum 501.40, Etymologicum Magnum 716.4-7. The headword in this form -- present active indicative, third person singular, Attic or Atticizing dialect -- is attested outside lexicography only in Aristotle, Parts of Animals 657b22 and 691a23.
[2] This additional sentence, Adler reports, is absent from mss AF, and only partially present in V. It also occurs in alpha 4162. The etymology offered here (which may derive ultimately from Philoxenus: see n. 1) is clearly fanciful, but no sounder alternative is known. See Chantraine, DELG s.v. skardamu/ssw.