Ethalia is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.
The species are moderate-sized. The orbicular shell is turbinately depressed. The whorls are convex, smooth or transversely striated, the last one rounded at the periphery. They have a mottled or streaked color-pattern. The umbilicus is partly closed by a callus deposit. The columellar lip ends anteriorly in an obtuse dilated callus. The callus emitted at the columellar-parietal angle of the aperture is tongue-shaped, closing the umbilicus except a rather narrow chink, or even entirely, in some species.
This genus occurs in the Central and East Indian Ocean, off East Africa, off Indo-Malaysia, and off Australia.
Species within the genus Ethalia include:
Ethalia bellardii (Issel, 1869)
Ethalia bysma Herbert, 1992
Ethalia carneolata Melvill, 1897
Ethalia catharinae Poppe, Tagaro & Dekker, 2006
Ethalia electra Herbert, 1992
Ethalia gilchristae Herbert, 1992
Ethalia guamensis (Quoy & Gaimard, 1834)
Ethalia minolina Melvill, 1897
Ethalia nitida A. Adams, 1863
Ethalia omphalotropis A. Adams, 1863
Ethalia polita A. Adams, 1862
Ethalia rufula Gould, 1861
Ethalia sanguinea Pilsbry, 1905
Ethalia striolata (A. Adams, 1855)
Species brought into synonymy
Ethalia (Ethaliella) Pilsbry, 1905: synonym of Ethaliella Pilsbry, 1905
Ethalia candida A. Adams, 1862: synonym of Leucorhynchia candida (A. Adams, 1862)
Ethalia capillata Gould, 1862: synonym of Ethaliella capillata (Gould, 1862)
Ethalia floccata G. B. Sowerby III, 1903: synonym of Ethaliella floccata (Sowerby, 1903)
Ethalia lirata E.A. Smith, 1871: synonym of Leucorhynchia lirata (E.A. Smith, 1871)
Ethalia multistriata A. E. Verrill, 1884: synonym of Solariorbis multistriatus (A. E. Verrill, 1884)
Ethalia perspicua A. Adams, 1861: synonym of Teinostoma perspicuum (A. Adams, 1861)
Ethalia philippii (A. Adams, 1855): synonym of Monilea philippii A. Adams, 1855
Ethalia plicata E. A. Smith, 1872: synonym of Leucorhynchia plicata (E. A. Smith, 1872)
Ethalia pulchella (A. Adams, 1855): synonym of Ethaliella pulchella (A. Adams, 1855)
Ethalia sobrina A. Adams, 1861: synonym of Lissotesta sobrina (A. Adams, 1861)
Ethalia striolata Kilburn, 1977: synonym of Ethalia carneolata Melvill, 1897
