See, here they are.

[He uncovers the platter revealing the severed heads of Thyestes' sons.]

Dost recognize thy sons?1005

Thyestes: I recognize my brother! How, O Earth,

Canst thou endure such monstrous crime as this?

Why dost thou not to everlasting shade

And Styx infernal cleave a yawning gulf,

And sweep away to empty nothingness

This guilty king with all his realm? And why

Dost thou not raze, and utterly destroy1010