Monodonta


Monodonta is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.
The genus Monodonta was first separated from the Linnaean genus Trochus by Lamarck in 1801 with Trochus labio Linnaeus, 1758 given as the type species.
Labio is a junior homonym of Labio Oken, 1815, itself a synonym of Monodonta Lamarck, 1799

Description

The very heavy, thick, solid shell has a turbinate-conic shape. The shell is smooth or spirally ridged. The outer lip is plicate within. The short, porcellanous columella is strong, cylindrical, bulging or more or less toothed near or at the base. Between this tooth and the basal margin there is a square notch or channel. The aperture is as high as wide.

Distribution

The species of this marine genus occurs over a wide area: Central and East Indian Ocean, Indo-China, Indo-Malaysian Oceania, the Philippines, Japan and Australia.

Species

Species within the genus Monodonta include:Monodonta australis Monodonta canalifera Lamarck, 1816Monodonta confusa Tapparone-Canefri, 1874Monodonta gibbula Thiele, 1925Monodonta glabrata Gould, 1861Monodonta labio Monodonta lugubris Lamarck, 1822Monodonta nebulosa Forsskal in Niebuhr, 1775Monodonta neritoides Monodonta perplexa Pilsbry, 1889Monodonta vermiculata Monodonta viridis Lamarck, 1816
;Species brought into synonymy :Labio corrosa A. Adams, 1853: synonym of Diloma subrostratum Monodonta Philippi, 1847: synonym of Osilinus Philippi, 1847Monodonta adelaidae Philippi, 1849: synonym of Chlorodiloma adelaidae Monodonta aegyptiaca Lamarck, 1822: synonym of Rubritrochus declivis Monodonta alveolata A. Adams, 1853: synonym of Herpetopoma instrictum Monodonta angulifera A. Adams, 1853: synonym of Perrinia angulifera Monodonta belliaei Michaud, 1829: synonym of Homalopoma sanguineum Monodonta berthelotii d'Orbigny, 1840: synonym of Clanculus berthelotii Monodonta bourcierei Crosse, 1863: synonym of Herpetopoma instrictum Monodonta carchedonius Lamarck, 1822: synonym of Modulus carchedonius Monodonta clathrata A. Adams, 1853: synonym of Vaceuchelus clathratus Monodonta colubrina : synonym of Osilinus sauciatus Monodonta conica Gray, 1827: synonym of Thalotia conica Monodonta constellata : synonym of Trochus constellatus Souverbie in Souverbie & Montrouzier, 1863Monodonta constricta Lamarck, 1822: synonym of Austrocochlea constricta Monodonta coronaria Lamarck, 1816: synonym of Tectarius grandinatus Monodonta couturii Payraudeau, B.-C., 1826: synonym of Clanculus corallinus Monodonta crinita Philippi, 1849: synonym of Chlorodiloma crinita Monodonta dama : synonym of Monodonta nebulosa Forsskal in Niebuhr, 1775Monodonta draparnaudii Payraudeau, 1826: synonym of Phorcus articulatus Monodonta fischeri Montrouzier, 1866: synonym of Herpetopoma fischeri ; synonym of Herpetopoma exasperatum Monodonta foveolata A. Adams, 1853: synonym of Vaceuchelus clathratus Monodonta fragaroides Lamarck, 1822 : synonym of Phorcus turbinatus Monodonta fulgurata : synonym of Oxystele fulgurata Monodonta glomus Philippi, 1844: synonym of Clanculus jussieui Monodonta immanis Fischer, 1880: synonym of Monodonta labio Monodonta jussieui Payraudeau, 1826: synonym of Clanculus jussieui Monodonta kraussii Philippi, 1846: synonym of Clanculus kraussii Monodonta lessoni Payraudeau, 1826: synonym of Gibbula divaricata