Commentary on line 5
ei)dui=a for ἰδυῖα: the short form can be restored (see on 1.365) everywhere but here and Hes. Theog.887.The diphthong is of course due to the influence of the masc. εἰδώς. See H. G. 26. 3. The form may perhaps serve to indicate the lateness of the whole passage, but not to condemn the line (van L.) or couplet (Fick). The expansion of πρωτοτόκος in οὐ πρὶν εἰδυῖα τόκοιο is thoroughly Homeric (see note on 8.527), and the line is not in the least like an interpolation. κινυρ́η, οἰκτρόφωνος διὰ τὸ πολὺ τῆς στοργῆς Eust. , rightly no doubt. The word does not recur in H. except in Zen.'s reading of Ι 612, κινυρίζων.
7-8 = 5.300-1, where see notes.