The name Iphianassa occurs only once in Latin literature—in the proem to De Rerum Natura (= DRN). Here Lucretius illustrates the evils of religion with a description of Iphianassa's sacrifice at Aulis (1.80–101):
illud in his rebus uereor, ne forte rearis
impia te rationis inire elementa uiamque
indugredi sceleris. quod contra saepius illa
religio peperit scelerosa atque impia facta.
Aulide quo pacto Triuiai uirginis aram
Iphianassai turparunt sanguine foede
ductores Danaum delecti, prima uirorum.
cui simul infula uirgineos circumdata comptus
ex utraque pari malarum parte profusast,
et maestum simul ante aras adstare parentem
sensit et hunc propter ferrum celare ministros
aspectuque suo lacrimas effundere ciuis,
muta metu terram genibus summissa petebat.
nec miserae prodesse in tali tempore quibat
quod patrio princeps donarat nomine regem.
nam sublata uirum manibus tremibundaque ad aras
deductast, non ut sollemni more sacrorum
perfecto posset claro comitari Hymenaeo,
sed casta inceste nubendi tempore in ipso
hostia concideret mactatu maesta parentis,
exitus ut classi felix faustusque daretur.
tantum religio potuit suadere malorum.
It is clear that Lucretius treats the name Iphianassa as a synonym for Iphigenia. Homer (
Il. 9.145, 9.287) and Sophocles (
El. 157) mention a daughter of Agamemnon called Iphianassa, but in neither author is she the daughter who was sacrificed at Aulis (and in several versions rescued at the last moment by Artemis). The first known mention of this myth was in the
Cypria, where, according to the summary of Proclus, the daughter was called Iphigenia (Kinkel,
EGF 19; Bernabé,
PEG 1.41). Hesiod refers to it in the
Catalogue of Women, where he calls the daughter Iphimede (
Cat. fr. 23a.15–26 + b M-W). From the fifth century
b.c.e., the extant sources, beginning with Pindar (
Pyth. 11.22) and Aeschylus (
Ag. 1526, 1555), call her Iphigenia. Why did Lucretius choose Iphianassa?