Lyre Snakes (Trimorphodon)
Lower Classification
- Western lyre snake (Trimorphodon biscutatus)
- Sonoran lyre snake (Trimorphodon lambda)
- Baja California lyre snake (Trimorphodon lyrophanes)
- Sinaloan lyre snake (Trimorphodon paucimaculatus)
- Texas lyre snake (Trimorphodon vilkinsonii)
- Trimorphodon quadruplex
- Mexican lyre snake (Trimorphodon tau)
- Trimorphodon tau latifascia
- Trimorphodon tau tau