[1] The present lh/qw (Doric la/qw) occurs as a variant of lanqa/nw -- the gloss here -- especially in compounds (and especially with a causative sense). See LSJ s.v. (web address 1). Same glossing in Hesychius, ps.-Herodian, and a scholion on Homer, Iliad 1.561, where the headword occurs (web address 2).
[2] Evidently quoted from somewhere; there are numerous possibilities (e.g. Euripides, Aristophanes, Xenophon, Demosthenes, Apollonius Rhodius, Lucian).