Atys densus

Atys densus
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Cephalaspidea
Family:	Haminoeidae
Genus:	Atys
Species:	A. densus
Binomial name
Atys densus Brazier, 1877
Synonyms
Atys densaBrazier, 1877 (incorrect gender of species epithet)

Atys densus is a species of small tropical sea snail, a bubble snail, a marine opisthobranch gastropod mollusk in the family Haminoeidae, the haminoea bubble snails. ^[1]

Description

(Original description) The shell is small, oval, and thick, with a dirty white appearance. The surface is finely plicated and strongly striated in a transverse direction. Within the interstices, finer lines become visible when viewed under a lens. The aperture is narrow above but opens wide below. The outer lip is regularly arched; it is produced posteriorly, while anteriorly it is both twisted and produced, which allows it to partly cover the umbilicus. ^{[2] [3]}

Distribution

This marine species is endemic to Australia and occurs in the Torres Strait and off Queensland.

References

1. Atys densus Brazier, 1877 . 6 January 2026. Retrieved through: World Register of Marine Species .
2. Brazier, J. (1877). "Mollusca collected during the Chevert Expedition". Proceedings of the Linnean Society of New South Wales. 2: 86. Retrieved 6 January 2026. This article incorporates text from this source, which is in the public domain .
3. Tryon, George W., (George Washington), Pilsbry, Henry Augustus, Sharp, Benjamin (1893) - Manual of conchology, structural and systematic : with illustrations of the species; Ser.1,v.15 p. 272 This article incorporates text from this source, which is in the public domain .

• Marshall, J.G. & Willan, R.C. 1999. Nudibranchs of Heron Island, Great Barrier Reef. Leiden : Backhuys 257 pp.