1. Callimachus, Ovid, and Allusion2. A Well-Defined Scope: Lexical Integrative and Reflective Allusions in the Prologue of Callimachus3. Broadening the Scope: Marking the Allusion and Reiterative Integrative and Reflective Allusion4. Variation of the Trope: Reflective and Integrative Allusion and Authorization within Callimachus’ Hymn to Delos and Ovid’s Book 6 of the Metamorphoses5. Boundaries of Genre? Allusion and Genre6. Conclusion