Tylomelania gemmifera

Tylomelania gemmifera is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae.

Distribution
This species occurs in Malili lakes, Sulawesi, Indonesia. It occurs in one lake; the type locality is Lake Matano.

Description
The shell has 9-10 whorls.

The width of the shell is 13.5 mm. The height of the shell is 46.5 mm. The width of the aperture is 8 mm. The height of the aperture is 10.5 mm.