Colombian Longtail Snake, White-headed Snake or Panda Bear Snake are common names for Enuliophis sclateri.
This species occurs from eastern Honduras to central Colombia on the Atlantic versant, and from the central Pacific versant of Costa Rica to eastern Panama (Savage 2002, McCranie 2004).
It is a mainly nocturnal and terrestrial species that feeds on small reptile eggs. Enulius sclateri is a small and slender snake, reaching 55 cm in total length. This species is harmless to humans.
It was my first sighting of this relatively rare snake.