Amphidromus columellaris is a species of air-breathing tree snail, an arboreal gastropod mollusk in the family Camaenidae.
Subspecies Amphidromus columellaris columellaris Möllendorff, 1892 Amphidromus columellaris gloriosus Fulton, 1896
Description Amphidromus webbi is large, with a shell length ranging from and a diameter of .
(Original description in Latin) The sinistral shell is narrowly perforate, slenderly conico-oblong, somewhat solid and very lightly striate. it is glossy, pale yellow, painted with rather broad, sometimes interrupted green streaks, brownish above, with 3 rosy bands, one at the suture, another below the periphery, the third at the umbilical region, often surrounded by other green, more rarely brown, bands.
The spire is turreted-conical, with a rounded, blackish apex. The shell contains 7 whorls. These are rather flat, slowly increasing, separated by an appressed, white-margined suture, the body whorl slightly ascending anteriorly. The aperture is slightly oblique, narrow and somewhat ear-shaped. The peristome is slightly expanded, white-lipped internally, with the margins joined by a thin, translucent callus. The columella is very spirally twisted and almost revolute towards the perforation.
Distribution Amphidromus sowerbyi was found on Lesser Sunda Islands and Tanimbar Islands Indonesia.
References
External links
Fulton Hugh C. (1896a) A list of the species of Amphidromus Albers, with critical notes and descriptions of some hitherto undescribed species and varieties. Annals and Magazine of Natural History, Series 6 vol. 17: p. 79