Stheno and Euryale

The Gorgons, dreadful and unspeakable, were rushing after him, eager to catch him; as they ran on the pallid adamant, the shield resounded sharply and piercingly with a loud noise.

At their girdles, two serpents hung down, their heads arching forward; both of them were licking with their tongues, and they ground their teeth with strength, glaring savagely.

[9]While the "great Fear" rioting upon the heads of the Gorgon, in the passage from the Shield quoted above, might possibly be a vague reference to hair made of snakes, the poet Pindar makes such a physical feature explicit, describing the two Gorgons, just like their sister Medusa, as having "horrible snakey hair" (ἀπλάτοις ὀφίων κεφαλαῖς).

And when Perseus managed to behead Medusa by looking at her reflection in his bronze shield, Stheno and Euryale chased after him, but were unable to see him because he was wearing Hades' cap, which made him invisible.

[13] The typical archaic (c. 8th–5th century BC) depictions of Stheno and Euryale, show their head turned to face the viewer, sitting (seemingly without a neck) atop a running body in profile, with wings on its back and curl-topped boots.