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I. Vaticanus 1910 a manuscript held in the Vatican Library, made of bombycine paper or parchment, large folio size, 126 pages, contains fragments written by several hands of Lycophron, Dionysius Periegetes, Hesiod’s Works and Days, and the Shield of Heracles, and finally 642 verses of Aratus, with scholia added throughout. Those that belong to Aratus end at verse 290, after a later hand began at verse 285. It is similar to the older hand that wrote the fourth Vatican manuscript, 1692, made of bombycine paper, 207 pages, mutilated at the beginning. This also contains the Periegetes and many other things by other hands.
K. Casanatensis O. Praedicatorum Minervitanorum J. II. 6. This is made of bombycine paper, large folio size, 85 pages, which contains the Periegetes with his Eustathius commentary, Aratus, Hesiod’s Theogony, and, by a later hand, 321 verses of the Shield of Heracles.
L. Laurentianus plut. 28 cod. 37. Written by Ioannes Scutariota the Thessalian in Florence in the year 1464. I, Angelo Poliziano, bought this book from the heirs of Paul, a Florentine physician and astronomer.
M. Venetus Marcianus 476, parchment, large folio size, 62 pages, ancient. It also contains Lycophron. It lacks a title.
N. Venetus Marcianus 480, parchment, large folio size, 442 pages. It contains, along with their scholia: Oppian, Theocritus, Periegetes, Nicander, Aglaias of Byzantium πρὸς τὰς ἀρχομένας ἀποχύσεις, περὶ μέτρων καὶ σταθμῶν on initial pourings, concerning measures and weights, Aratus, Hesiod, Apollonius of Rhodes, Orpheus’ Argonautica and hymns, Callimachus. Property of Bessarion. The hand is similar to Ioannes Rhosos.
There are two other codices of Aratus in the Marciana, 317 and 465, which are more recent, both paper and square-sized, and free from the verses of Planudes.
O. Palatinus (in the Vatican) 137, paper, square-sized, 153 pages, of which 127 are given to Theon in his commentary on the canons of Ptolemy and other astronomers. Verses 454–511 of Aratus are missing. I have not used this one beyond verse 67.
As for the scholia, I did not compare them to the codices (ABDEHIKMN and Vatican 1692 possessed them), but by comparing the examples that Buhlius edited together, I both corrected and supplemented them as best I could.