Enulius

Enulius is a genus of snakes in the family Colubridae. The genus is endemic to the Americas.

Geographic range
Species in the genus Enulius are found in northern Mexico, Central America, and northwestern South America.

Species and subspecies
The following species and subspecies are recognized as being valid.
 * Enulius bifoveatus McCranie & G. Köhler, 1999 - Guanaja long-tailed snake
 * Enulius flavitorques (Cope, 1868) - Pacific longtail snake
 * Enulius flavitorques flavitorques (Cope, 1868)
 * Enulius flavitorques sumichrasti Bocourt, 1883
 * Enulius flavitorques unicolor (Fischer, 1881)
 * Enulius oligostichus H.M. Smith, Arndt & Sherbrook, 1967 - Mexican longtail snake
 * Enulius roatanensis McCranie & G. Köhler, 1999 - Roatan long-tailed snake

Nota bene: A binomial authority or trinomial authority in parentheses indicates that the species or subspecies was originally described in a genus other than Enulius.

Etymology
The subspecific name, sumichrasti, is in honor of Swiss-born Mexican naturalist Adrien Jean Louis François de Sumichrast (1828–1882).