Statius needs to invoke the muse to continue his epic, as the poem gets more dark and intense.
Alias nova suggere vires, Calliope, maiorque chelyn mihi tendat Apollo.
Supply new strength, Calliope, and may Apollo string a greater lyre.
Alias: other, new or different
Nova: new
Suggere: supply, in the second person singular present active imperative
Vires: force, strength
Alias, Nova and vires are both feminine plural accusative
Calliope: the muse of epic poetry, and the recipient of the command
Maior: greater; comparative form of magnus meaning great
Que: and
Chelyn: lyre; in the feminine singular accusative
Mihi: for me; a dative singular pronoun
Tendat: string; in the jussive subjunctive, so expressing a wish
Apollo: nominative singular of the god
