Ethalia

Ethalia is a genus of sea snails, marine gastropod mollusks in the subfamily Umboniinae of the family Trochidae, the top snails.^[3]

Ethalia
Two views of a shell of Ethalia sanguinea
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Trochidae
Genus:	Ethalia H. & A. Adams, 1854 [1]
Type species
Rotella guamensis Quoy & Gaimard, 1834
Synonyms
Liotrochus Fischer, 1879 [2] Umbonium (Ethalia) H. Adams & A. Adams, 1854

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.^[4]

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^[5]
• 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