sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
s, marine
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
Raphitomidae
Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". '' Malacologia'' 47(1-2). . 3 ...
.
Description
The small shell is, subcylindrical. It contains few
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane flo ...
s. The base is concave. The sculpture consists of radial ribs latticed by spiral cords. The outer lip is slightly thickened and denticulate within. The sinus is shallow and subsutural.
Distribution
The species in this marine genus are endemic to
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
.
Species
Species within the genus ''Exomilus'' include:
* ''
Exomilus cancellatus
''Exomilus cancellatus'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Description
The length of the shell attains 4.5 mm, its diameter 1.5 mm.
(Original description) The small, fulvous brown shell i ...
'' (Beddome, 1883)
* ''
Exomilus compressus
''Exomilus compressus'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.MolluscaBase (2019). MolluscaBase. Exomilus compressus Fedosov & Puillandre, 2012. Accessed through: World Register of Marine Species at: ...
'' Fedosov & Puillandre, 2012
* ''
Exomilus cylindricus
''Exomilus cylindricus'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae
Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & ...
'' Laseron, 1954
* ''
Exomilus dyscritos
''Exomilus dyscritos'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Description
The length of the shell attains 9.1 mm, its diameter 2.7 mm.
(Oriignal description) The solid, white shell is long and narr ...
'' (Verco, 1906)
* ''
Exomilus edychrous
''Exomilus edychrous'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.Bouchet, P. (2015). Exomilus edychrous (Hervier, 1897). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at htt ...
'' (Hervier, 1897)
* ''
Exomilus lutarius
''Exomilus lutarius'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Description
The length of the shell attains 3 mm, its diameter 1.15 mm.
(Original description) The small, solid shell is cylindrical an ...
'' (Hedley, 1907)
* ''
Exomilus pentagonalis
''Exomilus pentagonalis'', common name the orange rib drillia, is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Description
The length of the shell attains 3.5 mm, its diameter 1.25 mm.
(Original d ...
'' (Verco, 1896)
* ''
Exomilus telescopialis
''Exomilus telescopialis'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Description
The length of the shell attains 4.5 mm, its diameter 1.25 mm.
(Original description) The minute shell is thin. It ...
'' (Verco, 1896)
;Species brought into synonymy:
* ''Exomilus anxius'' (Hedley, 1909): synonym of ''
Exomilus edychrous
''Exomilus edychrous'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.Bouchet, P. (2015). Exomilus edychrous (Hervier, 1897). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at htt ...
'' (Hervier, 1897)
* ''Exomilus compressa'' Fedosov & Puillandre, 2012: synonym of ''Exomilus compressus'' Fedosov & Puillandre, 2012
* ''Exomilus fenestratus'' (Tate & May, 1900): synonym of '' Gatliffena fenestrata'' (Tate & May, 1900)
* ''Exomilus perangulata'' Hervier, 1897 : synonym of ''
Mangelia orophoma
''Mangelia orophoma'' is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.Exomilopsis spica'' (Hedley, 1907)
References
* Hedley, 1919 ournal of the Royal Society of New South Wales, supplement to vol. 51: 79, 81* Powell, A.W.B. 1966. T''he molluscan families Speightiidae and Turridae, an evaluation of the valid taxa, both Recent and fossil, with list of characteristic species.'' Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 5: 1–184, pls 1–23