In the following, I will propose and/or defend new or previous emendations for a set of passages in Catullus, most of which are deemed corrupt or even beyond repair by many, if not all, philologists. For the sake of simplicity, I will first quote Mynors's OCT text, except for possible changes in punctuation that will be justified, either implicitly or in their own terms, in the ensuing discussion. Those sections I consider incorrect I will put between obeli (which, on several occasions, are also Mynors's ones). In addition, I will reproduce the relevant manuscript readings recorded in Mynors's apparatus, checked against Thomson's more complete collations. In each case, I will begin with summarizing the state of the question; nevertheless, owing to the vast amount of corrections or conjectures to be examined for many passages, I will concentrate on the most significant proposals. Next, I will try to show that the correction suggested conforms to the constraints of metre and language, and (in some cases at least) sheds some light on the symbolic or intertextual dimension of the poem at hand. Finally, I will provide an account of the corruption process that presumably operated, with the aim of establishing the palaeographical verisimilitude of my proposal.