Faunus ater (Lava Snail, Devil Lava Snail or Black Devil Snail) is a species of brackish water snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae. Faunus ater is the only species within the genus Faunus.
This species is distributed throughout the archipelagos and large islands of the Indo-West Pacific region. It has been recorded from Thailand, Malaysia, Indonesia, New Guinea, Papua New Guinea, the Philippines and as far west as Sri Lanka. The snails we offer originate from Thailand.
The periostracum is thick, and the color of the periostracum is dark brown or black. The shell has about 20 whorls. The apical whorls may be eroded in older snails. The aperture is ovate and white. The shell is unique am