I can't see any white bar in front of the eye because the picture is so blurry, but the supralabials are whitish, or at least there are no markings present. And the lateral stripe is high enough for it to be a ribbon.

Thought "Masticophis" for a second there, but it seemed wrong after looking at a couple of pics. Anyway, they should have the same bar in front of the eye as the ribbon snakes.