Indrella
Indrella is a monotypic genus containing the single species Indrella ampulla, a tropical terrestrial air-breathing gastropod mollusk in the family Ariophantidae. It is endemic to the Western Ghats of India. I. ampulla is the only species in the genus Indrella, however the animal color is polymorphic: the visible soft parts of the snail can be various colors, including red and pale yellow. Shell description The shell of this species is like that of Vitrina, imperforate, with few whorls and with a very large aperture. The shell consists mainly of proteins with only small amounts of calcium carbonate. The shell is obliquely ovate and globose in shape and very thin. Half the thickness consists of epidermis, marked throughout with plicate line of growth, crossed by faint impressed spiral lines, and on the last whorl by shallow irregular furrows. The color of the shell is brownish olive, sometimes darker brown. Spire is small, convex and obtuse. The number of whorls is 3 and a half, rapidly increasing, the last much larger, rounded at the periphery and beneath. The aperture is very large, oblique, roundly oval, the same colour within as without, but smooth and glossy. The peristome is thin, membranaceous, columellar margin