Iph′iclus was twin brother of Hercules, and father of Iolaus.

Iphigeni′a was a daughter of Agamemnon. He made a vow to Diana, which involved the sacrifice of Iphigenia, but just at the critical moment she was carried to heaven, and a beautiful goat was found on the altar in her place.

I′ris, daughter of Thaumas and Electra, was the attendant of Juno, and one of the messengers of the gods. Her duty was to cut the thread which detained expiring souls. She is the personification of the rainbow.

Iron, see Vulcan.

I′sis, wife of Osiris, see Io.

I′tys was killed by his mother Progne when six years old, and given to his father Tereus as food. The gods were so enraged at this that they turned Itys into a pheasant, Progne into a swallow, and Tereus into an owl.

Ixi′on was son of Phlegyas, King of the Lapithæ. For attempting to produce thunder, Jupiter cast him into hell, and had him bound to a wheel, surrounded with serpents, which is for ever turning over a river of fire.

“The powers of vengeance, while they hear,

Touched with compassion, drop a tear;

Ixion’s rapid wheel is bound,