=25-27. SCYLLA ... CHARYBDIN.= Ovid gives similar descriptions of Scylla at _Am_ III xii 21-22 and _EP_ III i 122, of Charybdis at _Am_ II xvi 25-26, and of Scylla and Charybdis at _Her_ XII 123-26 and _Met_ XIII 730-33. All such descriptions in Latin poetry of course derive ultimately from _Od_ XII 73-110.
=25. QVOD LATRET AB INGVINE MONSTRIS.= Professor R. J. Tarrant points out to me Ovid's imitation here of _Ecl_ VI 74-75 'Scyllam ... candida succinctam latrantibus inguina monstris'; the _rates_ and _nautae_ of Ovid's line 26 are in lines 76 and 77 of the Virgilian passage.
=25. QVOD.= 'Granted that'. Bömer at _Met_ VII 705 claims that the only passage where this is the necessary meaning of _quod_ is _Priapea_ VI 1 'quod sum ligneus ... Priapus ... prendam te tamen', but it seems to be the meaning required at Lucretius II 532-35 'nam _quod_ rara uides magis esse animalia quaedam / fecundamque minus naturam cernis in illis, / at regione locoque alio terrisque remotis / multa licet genere esse in eo numerumque repleri'.
All six instances of the idiom cited by the _OLD_ (_quod_ 6c) are from poetry. In the two instances already cited, _quod_ is followed by the indicative, as is the case at Prop III ii 11-16. _Quod_ in this sense followed by the subjunctive seems to be an Ovidian idiom; it is used by him at _Her_ IV 157-61 '_quod_ mihi _sit_ genitor, qui possidet aequora, Minos, / quod _ueniant_ proaui fulmina torta manu, / quod _sit_ auus radiis frontem uallatus acutis, / purpureo tepidum qui mouet axe diem-- / nobilitas sub amore iacet!' and _Met_ VII 704-7 'liceat mihi uera referre / pace deae: quod _sit_ roseo spectabilis ore, / quod _teneat_ lucis, _teneat_ confinia noctis, / nectareis quod _alatur_ aquis, ego Procrin amabam', and by an imitator of Ovid at _Her_ XVIII 41.
=26. HENIOCHAE NAVTIS PLVS NOCVERE RATES.= The Heniochi lived on the eastern shore of the Euxine and were, as Ovid indicates, known as pirates (Strabo XI 2 12-13).
=27. INFESTIS ... ACHAEIS.= Mela includes the Achaei and the Heniochi in his list of 'ferae incultaeque gentes uasto mari adsidentes' (I 110). The two nations are grouped together by Strabo (XII 2 12) and Pliny (_NH_ VI 30).
=28. EPOTVM ... VOMAT.= Professor R. J. Tarrant cites the verbal similarity at (pseudo-Ovidian) _Am_ III v 18 'iterum _pasto pascitur_ ante cibo'.