Amphithalamus incidatus is a species of minute sea snails, marine gastropod mollusks or micromollusks in the family Anabathridae.
Subspecies Amphithalamus incidatus incidatus (Frauenfeld, 1867) Amphithalamus incidatus maoria (Ponder, 1968)
Description The length of the shell attains 1.4 mm, its diameter 0.7 mm.
(Original description in Latin) The shell is conical, robust, brown, smooth, and weakly shiny. It possesses five flat whorls, with edges sharply constricted on both sides, so that the suture lies as if in a deepened groove. The aperture is rounded, angled at the top, and measures less than half the shell's height; its rim is thickened.
Distribution This species is endemic to Australia and occurs off New South Wales, Queensland, South Australia, Tasmania, Victoria and Western Australia.
References
Chapman, M.G., Underwood, A.J. & Blockley, D. 2008. Effects of method of deployment of artificial units of habitat on microgastropod colonization. Marine Ecology Progress Series 366: 49-57 Cotton, B.C. 1944. Recent Australian species of the family Rissoidae (Mollusca). Transactions of the Royal Society of South Australia 68(2): 286-314 Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.
External links Ponder, W.F. 1983. Review of the genera of the Barleeidae. Records of the Australian Museum 35: 231-281 Biolib.cz: image
External links Seashells of New South Wales: image and description