Assiminea sinensis
Assiminea sinensis is a species of minute, salt-tolerant snail with an operculum, an aquatic gastropod molluscs, or micromolluscs, in the family Assimineidae.
Description
The length of this species attains 5 mm, its diameter 3 mm.The shell is imperforate, ovate-conical, and rather solid. It is shining, nearly smooth and chestnut-brown. It is marked by a slightly faint impressed line below the suture. The spire is elongated and conical, with a somewhat acute apex. It has 7½ rather flattened whorls. The body whorl is compressed, scarcely convex, and furnished with no keel. The aperture is small and nearly vertical. The margins are joined by a somewhat obsolete callus. The outer lip is thin. The inner lip is arched, thickened, and dark chestnut-brown. It is subangulate below.