Amphidromus placidus is a species of medium-sized air-breathing tree snail, an arboreal gastropod mollusk in the family Camaenidae.
Description.
The length of the shell attains 31 mm, its diameter 16 mm.
(Original description) The sinistral shell is broadly conical, exhibiting a slight perforation and a thin structure. Its surface appears obliquely striate and somewhat angulate at the periphery. Comprising six slightly convex whorls, the apex presents a brown color. The apical whorls are white, transitioning to a pale lemon-color on the lower whorls. The columella is straight and rather thin, slightly expanded and white at its upper part. The outer lip displays a pale purple-brown hue and is expanded and slightly reflected.
Habitat.
This species lives in trees.
Distribution.
The type locality of this species is Borneo.