odissem: I would hate you as roundly as does Vatinius. Calvus had on more than one occasion acted as the prosecutor of Vatinius; cf. introductory note to Catul. 53.1. With the collocation odissem odio, cf. Psalms 139.22 “I hate them with perfect hatred.”
 di mala multa dent: a familiar formula of imprecation; cf. Catul. 28.14; Pl. Most. 643; Ter. Phor. 976 “malum, quod isti di deaeque omnes duint” , and the prayer for blessing in Pl. Poen. 208 “multa tibi di dent bona” .
 clienti: under the earlier Roman feudal system, one duty of the patronus was to act as the legal representative of the cliens; the same terms were now used to denote the legal counsel and the man for whom he incidentally appeared; cf. Hor. Ep. 2.1.104 “clienti promere iura” .
 novum ac repertum: newly discovered, for surely no one but a schoolmaster (litterator) would ever think of paying the honorarium of his legal coonsel with books; but Sulla evidently thought he had found a kindred spirit in the poet-lawyer Calvus.
 munus: the relation between lawyer and client was still construed to be that between the patronus and cliens of the earlier social system. Hence, as the patronus was bound to defend the cliens before the courts without the exaction of a special contribution of money from him, so the lawyer was still forbidden to accept a fee from his client. But the prohibition was usually evaded under the guise of gifts and legacies.
 continuo die: on the very next day; cf. 0v. Fast. 5.733 “auferet ex oculis veniens Aurora Booten, continuaque die sidus Hyantis erit” ; Ov. Fast. 6.719 “tollet humo validos proles Hyrica lacertos, continua Delphin nocte videndus erit.” continuo cannot be, as some suggest, an adverb, - if for no other reason, because die Saturnalibus alone is not Latin. The passage from Pl. Poen. 497 “die bono Aphrodisiis” , is not in point, for die is there modified by an adjective. But the arrangement here makes improbable the direct modification of die by optimo and dierum. Calvus had evidently despatched the book the evening before, so that it might reach Catullus the first thing next morning.
 Saturnalibus: a very ancient Latin festival, in commemoration of the golden age when Saturn dwelt among men. The especial day of the festival was Dec. 17 of each year, but the celebration was by popular usage extended over the week following. Presents were exchanged between friends, slaves were temporarily treated as if equals of their masters (cf. Hor. S. 2.7), and the utmost freedom and joviality prevailed.
 si luxerit, as soon as the morrow dawns; the conditional form points the restless impatience that can almost believe the morrow will never come. The day is spoiled for Catullus; but he must drag along a wretched existence through the tedious hours till next morning, when the shops of the booksellers will be opened once more, and he can take revenge in kind.
 librariorum: generally used throughout this and the Augustan period of a mere copyist (scriba; cf. Hor. A.P. 354 “scriptor si peccat idem librarius usque” ), but here of a copyist who is also a bookseller; in later Latin it is used of a true bookseller (bibliopola), who, however, usually employed a staff of copyists; cf. Sen. Ben. 7.6.1 “libros dicimus esse Ciceronis; eosdem librarius suos vocat.”
 scrinia: cylindrical boxes provided with a cover and used to hold each a number of MS. rolls standing on end.
 Caesios, Aquinos: the plural denotes such poets as those mentioned. The change to the singular in Suffenum (v.19) is but for variety, or perhaps because Suffenus personally was an object of greater attention to Catullus (see Catul. 22.1). Caesius is otherwise unknown; Aquinus onlv through Cic. Tusc. 5.63 “adhuc neminem cognovi poetam (et mihi fuit cum Aquino amicitia) qui sibi non optimus videretur.”
 valete abite: asyndetic, as in Hor. Ep. 1.6.67 vive vale. With this dismissal of worthless literature cf. Verg. Catal. 7.1 “ite hinc, inanes, ite, rhetorum ampullae, inflata rore non Achaico verba.”