''Megastomia simplex'', common name the simple pyramid shell, is a species of

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 ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

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 ...

mollusk in the family Pyramidellidae, the pyrams and their allies.of Tasmania : ''Syrno
A guide to the seashell and other marine mollusks a simplex''
/ref>MolluscaBase eds. (2022). MolluscaBase. Megastomia simplex (Angas, 1871). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=722616 on 2022-07-17

Description

The white, rather solid shell has a smooth appearance. The length of the shell measures . The teleoconch contains 7½ rather flat

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 floral ...

s . They are a little angulated at the suture. The aperture is lirate within. Its plait is sharp and transverse.G.W. Tryon, Manual of Conchology vol. VIII p. 363; 1889
/ref>

Distribution

The type specimen of this marine species was found off Port Jackson, New South Wales, Australia.

References

Pyramidellidae Gastropods described in 1871 {{Pyramidellidae-stub