IV. THE LEGENDS OF HYPSIPYLE AND MEDEA. The sources mentioned by Morley are Ovid's Metamorphoses, bk. vii., and Heroides, epist. vi.; to which we must add Heroides, epist. xii. But this omits a much more important source, to which Chaucer expressly refers. In l. 1396, all previous editions have the following reading--'In Tessalye, as _Ovyde_ telleth us'; but four important MSS. read _Guido_ for _Ovyde_, and they are quite right[34]. The false reading _Ovyde_ is the more remarkable, because _all_ the MSS. have the reading _Guido_ in l. 1464, where a change would have destroyed the rime. As a matter of fact, ll. 1396-1461 are from Guido delle Colonne's Historia Troiana, book i. (see notes to ll. 1396, 1463); and ll. 1580-3, 1589-1655 are also from the same, book ii. (see notes to ll. 1580, 1590). Another source which Chaucer may have consulted, though he made but little use of it, was the first and second books of the Argonautica of Valerius Flaccus, expressly mentioned in l. 1457 (see notes to ll. 1457, 1469, 1479, 1509, 1558)[35]. The use made of Ovid, Met. vii., is extremely slight (see note to l. 1661). As to Ovid, Her. vii., xii., see notes to ll. 1564, 1670. The net result is that Guido is a far more important source of this Legend than all the passages from Ovid put together. Chaucer also doubtless consulted the fifth book of the Thebaid of his favourite author Statius; see notes to ll. 1457, 1467. Perhaps he also consulted Hyginus, whose 14th Fable gives the long list of the Argonauts, and the 15th, a sketch of the story of Hypsipyle. Compare also Boccaccio, De Claris Mulieribus, capp. 15, 16; and the same, De Genealogia Deorum, lib. xiii. c. 26. Observe also that Gower gives the story of Medea, and expressly states that the tale 'is in the _boke of Troie_ write,' i.e. in Guido. See Pauli's edition, ii. 236. V. THE LEGEND OF LUCRETIA. Chaucer refers to Livy's History (bk. i. capp. 57-59); and to Ovid (Fasti, ii. 721-852). With a few exceptions, the Legend follows the latter source. He also refers to St. Augustine; see note to l. 1690[36]. Cf. Boccaccio, De Claris Mulieribus, cap. 46, who follows Livy. Several touches are Chaucer's own; see notes to ll. 1812, 1838, 1861, 1871, 1881. Gower has the same story (iii. 251), and likewise follows Ovid and Livy. VI. THE LEGEND OF ARIADNE. From Ovid, Met. vii. 456-8, viii. 6-182; Her. Epist. x. (chiefly 1-74); cf. Fasti, iii. 461-516. But Chaucer consulted other sources also, probably a Latin translation of Plutarch's Life of Theseus; Boccaccio, De Genealogia Deorum, lib. xi. capp. 27, 29, 30; also Vergil, Aen. vi. 20-30; and perhaps Hyginus, Fabulae, capp. 41-43. Cf. House of Fame, 405-426; and Gower, ii. 302[37].