Or nymphae Libethrides, a name of the Muses, which they derived from the well Libethra in Thrace; or, according to others, from the Thracian mountain Libethrus, where they had a grotto sacred to them. (Virg. Eclog. vii. 21; Mela, ii. 3; Strab. ix. p. 410, x. p. 471.) Servius (ad Eclog. l. c.) derives the name from a poet Libethrus, and Pausanias (ix. 34. § 4) connects it with mount Libethrius in Boeotia. (Comp. Lycoph. 275; Varro, de Ling. Lat. vii. 2.)