NOT venomous. Head slightly wider than neck, keeled scales, round pupils. Body is brown with a paler band down the spine, dark blotches appear on either side of the neck behind the head. Typically 9 to 13 inches (23 to 33cm) in length. (J. R. Dixon and J. E. Werler, Texas Snakes: A Field Guide, University of Texas Press, 2000.)