Ethalia

Ethalia is a genus of sea snails, marine gastropod mollusks in the subfamily Umboniinae of the family Trochidae, the top snails.

Description
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.

Distribution
This marine genus occurs in the Central and East Indian Ocean, off East Africa, off Indo-Malaysia, and off Australia.

Species
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