[1] LSJ considers kh=uc a variant of kh/c, which it defines as "a sea-bird, perh. the tern or sea-swallow". The particular form is post-classical, used in ps.-Apollodorus 1.52, Dionysius, Ixeuticon 2.18, Babrius 2.115, Philostratus the Elder 2.17.11, ps.-Lucian, Ocypus 113. For i(e/rac "hawk," see iota 155.
[2] Two characters in Greek mythology bore this name. (A) King of Thessaly and husband of Halcyone; they were transformed into halcyon birds because of their hybris in calling each other Zeus and Hera. (Mentioned in Hesiod, Shield 354, 472, 476; Hecataeus FGrH 1 F30; Callimachus, Aetia fr.75; Diodorus Siculus 4.36.5, 4.57.2; and the myth is detailed in ps.-Apollodorus 1.52.) (B) King of Trachis, who entertained Heracles after his marriage to Deianeira (ps.-Apollodorus 2.150, 153).