Scaphiodontophis annulatus

Scaphiodontophis annulatus, commonly known as the Guatemala neckband snake, is a species of snake in the family Colubridae. The species is native to southern Mexico, Central America, and Colombia. There are four recognized subspecies.
Geographic distribution.
"S. annulatus" is found in the Mexican states of Puebla and Yucatán, and in Belize, Colombia, El Salvador, Guatemala, Honduras, and Nicaragua.
Habitat.
The preferred natural habitat of "S. annulatus" is forest at altitudes from sea level to .
Subspecies.
The following four subspecies are recognized as being valid.
Reproduction.
"S. annulatus is oviparous.
Etymology.
The subspecific name, "dugandi", is in honor of Colombian biologist Armando Dugand.