τὸν ἔχοντα. “Sc. ταύτην τὴν ὠδῖνα” (Wolf): but Hommel and Stallb. supply αὐτό, i.e. τὸ καλόν. Cp. Phaedrus 252 A τὸν τὸ κάλλος ἔχοντα ἰατρὸν εὕρηκε μόνον τῶν μεγίστων πόνων,—which settles the question.
τί...γεννήσεως ; τί, answered by ὅτι, means “why” or “wherein” rather than “what” (as in 204 D), and the genitive, like those preceding, is objective. Supply ἐστὶν ὁ ἔρως.
ἀειγενές. This is practically a re-assertion of the statement in 206 C (θεῶν τὸ πρᾶγμα κτλ.). Cp. Laws 773 E ὡς χρὴ τῆς ἀειγενοῦς φύσεως ἀντέχεσθαι τῷ παῖδας παίδων καταλείποντα κτλ.