13. For a complete list, see Testimonia prefixed to Goetz and Schoell's ed. of Plautus.
16. Ed. Men. (Leipzig, 1891), ad 410.
17. Cf. opening lines of Eurip. Iph. in Taur.
18. Pp. 13--19. V. Langen, Plautinische Studien, pp. 139-142. Cf. also comments of Brix to Menaechmi passim.