Subsessor is a genus of snake in the family Homalopsidae. The genus is monotypic, containing the sole species Subsessor bocourti. The species is commonly known as Bocourt's mud snake or Bocourt's water snake and has traditionally been placed in the genus Enhydris.
Both the specific name, bocourti, and the common name, Bocourt's water snake, refer to French zoologist Marie Firmin Bocourt.
A robust snake, S. bocourti can surpass 1 m (3.3 ft) in length.
S. bocourti feeds on frogs, fishes, and crustaceans.
S. bocourti is a live bearing species, giving birth to, on average, 3-8 fully formed neonate snakes.
