Aulopoma sphaeroideum is a species of small land snail with an operculum, terrestrial pulmonate gastropod mollusc in the family Cyclophoridae.
Distribution It is endemic to Sri Lanka.
Description It is about 19mm in length.
(Description in German by Kobelt) The height of the shell attains 9 mm, its diameter 13.5 : 11.25 mm
The shell is narrowly umbilicate, globose-conic, thin, and striated; it is white with indistinct red marbling. The periostracum is brownish. The apex is rather pointed and blackish. There are nearly 4 very rapidly increasing whorls, the bottom two of which are inflated, with the body whorl being briefly detached at the front. The aperture is oblique and circular, slightly angular at the top; the peristome is simple and straight. The operculum is pale, externally hollowed in the center, and consists of 5 convex, obliquely striated whorls.
References
Pfeiffer, L. (1857). Neue Landschnecken. Malakozoologische Blätter. 4 (3): 85-89. Cassel
External links Land snail diversity in Sri Lanka. An illustrated guide prepared for the launch of the Darwin Initiative programme Naggs, F. & Raheem, D. (2000). Photography by Harold Taylor. The Natural History Museum, London. pages i-xiii, 1-203. 246 coloured plates. (print), (compact disc) Snails of the world:Asia:the tropical region