Pila nevilliana
Pila nevilliana, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails.
Description
The length of the shell attains 35 mm, its diameter 28.5 mm.The species is considerably larger, stouter and more globose than Pila saxea, the spire is more swollen, the body whorl more transverse, the aperture broader above, the suture more oblique and the sculpture of the shell coarser and less regular. The external colour is deep chestnut, with which the interior is also tinged. The peristome is white. The scar of the operculum is relatively smaller and its central ridge broader and flatter.