Tylomelania neritiformis

Tylomelania neritiformis is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae.
Tylomelania neritiformis is the type species of the genus Tylomelania. This type species was subsequently designated by Johannes Thiele in 1929.

Distribution

The type locality is the upper part of the Poso River in Sulawesi, Indonesia.

Description

The shell is small and thick, with a short spire and five whorls. It is black in color with a violet tint.