The Coal Skink (Eumeces anthracinus) is a North-American lizard that grows to 13 to 18 cm (5 - 7 inches) in length with a maximum snout to vent length of 7 cm (2.75 inches). It is a four-lined skink whose light stripes extend onto the tail. The broad dark lateral stripe is 4 - 4.5 scales wide and there are no light lines on top of the head. The dorsolateral light stripe is on the edges of the 3rd and 4th scale rows, counting from midline of back. One postmental scale is present. The sides of the head of the male are reddish during spring breeding season, at least in some parts of the range.

There are two subspecies of the Coal Skink: