For 10: The argonauts came across these creatures starving an old man by fouling his food before he could eat it. On Iris' be
For 10: The argonauts came across these creatures starving an old man by fouling his food before he could eat it. On Iris' behest they drove them away instead of killing them. One makes a fleeting appearance in Shakespeare's Tempest.  For 5: They had the heads of old women, and the bodies and wings of birds. Their name comes from a Greek verb meaning "to snatch."
For 10: The argonauts came across these creatures starving an old man by fouling his food before he could eat it.
{Harpies}