Jason and the Argonauts

Don Chaffey

Harryhausen's Argonaut voyage lists Euphemus among the crew — Poseidon's swift son who in the poem casts the clod that becomes Thera.

Argonautica

Apollonius of Rhodes

Argonaut who receives Triton/Euphemus' clod of earth and dreams the founding of Calliste (Thera) — Poseidon's son as colonial omen for Cyrene's line.

Euphemus

Argonaut son of Poseidon; swiftest of men and ancestor of the Battiads through the clod of Calliste.