Bythinellidae

Bythinellidae
Shell of Bythinella bouldouyrensis (paratype at MNHN, Paris)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Truncatelloidea
Family: Bythinellidae
Locard, 1893
Genera

See text

Bythinellidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the order Littorinimorpha.[1]

Characteristics

(Original description in French) The shell is small and either turban-shaped or tower-shaped, with a narrow umbilicus and an entire aperture. The operculum is horny or calcareous and may be concentric, spiral, or nearly spiral.[2]

Their minute shell is often colored. They are characterized by a calcareous operculum, a lobe on the upper surface of the neck. The ctenidium, the respiratory gill-comb, is very broad. They have a ciliary feeding habit. The kidney has a large extension towards the mantle.[3]

Genera

Genera in the family Bythinellidae include:

Genera brought into synonymy
  • Acrophlyctis Cossmann, 1888 †: synonym of Bythinella (Acrophlyctis) Cossmann, 1888 † represented as Bythinella Moquin-Tandon, 1856
  • Bithinella [sic]: synonym of Bythinella Moquin-Tandon, 1856 (incorrect subsequent spelling)
  • Bithynella Moquin-Tandon, 1856: synonym of Bythinella Moquin-Tandon, 1856 (incorrect subsequent spelling)
  • Bythynella: synonym of Bythinella Moquin-Tandon, 1856 (invalid: incorrect subsequent spelling)
  • Microna Frauenfeld, 1863: synonym of Bythinella Moquin-Tandon, 1856
  • Terrestribythinella Sitnikova, Starobogatov & V. Anistratenko, 1992: synonym of Bythinella Moquin-Tandon, 1856 (junior subjective synonym)

References

  1. ↑ MolluscaBase eds. (2020). MolluscaBase. Bythinellidae Locard, 1893. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=724571 on 2020-06-27
  2. ↑ Locard, A. (1893). Conchyliologie française. [I]. Les coquilles des eaux douces et saumâtres de France. Description des familles, genres et espèces. 1-327. Paris: J.-B. Balmlière. p. 71. Retrieved 18 May 2026. Public Domain This article incorporates text from this source, which is in the public domain.
  3. ↑ Lilly, M.M. (1953). "The mode of life and the structure and functioning of the reproductive ducts of Bithynia tentaculata (L.)". Proceedings of the Malacological Society of London. 30 (4–5): 87–110.
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