And to Sea ( Pontus) and Earth were born Phorcus, Thaumas, Nereus, Eurybia, and Ceto.As to the offspring of Sea ( Pontus, conceived as masculine) and Earth (conceived as feminine), see Hes. Th. 233ff.; Hyginus, Fab. p. 28, ed. Bunte. Now to Thaumas and Electra were born Iris and the Harpies, Aello and Ocypete;As to the offspring of Thaumas and Electra, see Hes. Th. 265ff. and to Phorcus and Ceto were born the Phorcides and Gorgons,As to the parentage of the Phorcides and Gorgons, see Hes. Th. 270ff.; Hyginus, Fab. p. 29, ed. Bunte. As to the monsters themselves, see Apollod. 2.4.2ff. of whom we shall speak when we treat of Perseus.