This nerite has a low spire, and is highly variable in colour and pattern, although diamonds and lines are common. It has a white to grey columellar callous with a weakly dentate edge to the white inner lip and a white aperture. The operculum is whitish with some grey colour or brownish.
Clithon spp.
Class Gastropoda
Infraclass Neritimorpha
Order Neritopsida
Suborder Neritina
Superfamily Neritoidea
Family Neritidae
Subfamily Neritininae
Genus Clithon Montfort, 1810 (type species Nerita corona Linnaeus, 1758) (Synonyms Corona Récluz, 1850; Pictoneritina Iredale, 1936).
The specific status of the northern Australian taxa is uncertain.
This brackish to freshwater nerite lives in the lower reaches of mostly tidal streams. As with other neritids, egg capsules are small, oval and white.
Known from a few coastal streams in northern Australia, from Kimberley to north-eastern Queensland.
There are apparently two or more species of Clithon that extend into freshwater in norhern Australia but their identification is problematic.
Cabat, A. R. & Finet, Y. (1992). Catalogue of the Neritidae (Mollusca: Gastropoda) described by Constant A. Recluz including the location of the type specimens. Revue suisse de Zoologie 99: 223-253.
Eichhorst, T. E. (2016). Neritidae of the World. Volumes 1 & 2. ConchBooks, Harxheim.
