(Alsophis antiguae)
This racer exhibits sexual dimorphism.The adult racer is typically about one meter long,with females being larger than the males.Young adult males are usually dark brown with light creamy markings,while young females are silvery-gray with pale brown patches and markings.Females also have larger heads than the males.However,older individuals of both sexes can be highly variable in colour hue and pattern,and are frequently heavily speckled or blotched in a range of hues,including white,taupe,reddish brown,brown and black.