Note 13 — § 18. The Perfect System.
Reading edition
The term hyperypatê had all but disappeared from the text of Theon Smyrnaeus in the edition of Bullialdus (Paris, 1644), having been corrupted into hypatê or parypatê in every place except one (p. 141, 3). It has been restored from MSS. in the edition of Hiller (Teubner, Leipzig, 1878). The word occurs also in Aristides Quintilianus (p. 10 Meib.), where the plural hyperypatai is used for the notes below Hypatê, and in Boethius (Mus. i. 20).
It may be worth noticing also that Thrasyllus uses the words diezeugmenê and hyperbolaia in the sense of nêtê diezeugmenôn and nêtê hyperbolaiôn (Theon Smyrn. l. c.).