or, more correctly, LUCUSTA (see Heinrich, ad Juv.
vol. ii. p. 62), a woman celebrated for her skill in concocting poisons.
She was employed by Agrippina in poisoning the emperor Claudius, and by Nero for despatching Britannicus. (Tac. Ann. 12.66
; Suet. Nero 33
; D. C. 60.34
; Juv. 1.71
, with Schol.) Suetonius says (Nero,
33) that the poison which she administered being too slow, Nero impatiently struck her with his own hand, and forced her to prepare a stronger draught in his presence, which killed Britannicus instantaneously.
She was rewarded by Nero with ample estates; but under the emperor Galba she was executed with other malefactors of Nero's reign. (D. C. 64.3