Argalista umbilicata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Colloniidae
Subfamily:	Colloniinae
Genus:	Argalista
Species:	A. umbilicata
Binomial name
Argalista umbilicata Powell, 1926

Argalista umbilicata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae. ^[1]

Contents

• Description
• Distribution
• References

Description

The height of the shell attains 1.9 mm, its diameter 2.75 mm.

This section needs expansion. You can help by adding to it. (October 2025)

Distribution

This marine species is endemic to New Zealand and occurs off South Island and Chatham Rise.

References

• Powell, A. W. B. (1926). Mollusca from 100 fathoms off Lyttelton, with descriptions of four new species, and also a new Pliocene fossil. Scientific Results of the New Zealand Government Trawling Expedition, 1907. Records of the Canterbury Museum. 3: 43–50.
• Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland
• 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