Loxocemus

Loxocemus bicolor, sole member of the monotypic family Loxocemidae, is a species of python-like snake found in Mexico and Central America. No subspecies are currently recognized. Analyses of DNA show that "Loxocemus" is most closely related to the true pythons and the sunbeam snakes.
Description.
Adults grow to a maximum of in length. On average this snake grows to roughly . The body is stout and very muscular. The snout is shovel-shaped, with a narrow head and small eyes to facilitate burrowing. The species is described as terrestrial and semi-fossorial, which makes them hard to observe and study. The color pattern is usually dark with patches of white scales, although occasionally after shedding all pigment will disappear, resulting in a white snake with only a small dark patch on its head.
Distribution and habitat.
It is found along the Mexican Pacific versant at low to moderate elevations in the states of Nayarit, Jalisco, Colima, Michoacán, Morelos, Guerrero, Oaxaca, and Chiapas. From there, its range extends south through Guatemala, Honduras, El Salvador, Nicaragua, and Costa Rica. The type locality given is "La Unión, San Salvador" (in El Salvador).
Lifecycle.
They are found in a variety of habitats, including tropical, moist, and dry forests. In Honduras and Guatemala, they also occur in dry inland valleys that drain into the Caribbean. Their diet is believed to consist of rodents and lizards. They have also been observed eating iguana eggs. They are oviparous, laying small clutches of two to four eggs.