The names for these two daughters of Hēlios the god of sunlight, Phaéthousa and Lampetíē, both refer to the radiance of the sun. These names are parallel to the names Phaéthōn and Lámpos as solar horses that draw the chariot of Ēōs the goddess of the dawn. See also the comment at O.23.246. These four names and the myths linked with them reflect mythological traditions that can be reconstructed by way of Indo-European linguistics. Of special interest is the morphology of Lampetíē.