Coluber | Constrictor knot | Boa constrictor | Racer (''Coluber constricter'') | Pharyngeal constrictor | Coluber constrictor flaviventris | boa constrictor |
The genus Masticophis may soon be absorbed by the closely related genus Coluber, which contains the Racer (Coluber constricter).
Coluber constrictor anthicus, commonly known as the buttermilk racer, is a subspecies of racer, a nonvenomous, colubrid snake, endemic to the southern United States.
Coluber constrictor flaviventris, commonly known as the eastern yellowbelly racer, is a subspecies of racer, a nonvenomous, colubrid snake.