''Syrnola pyrrha'' 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.
[Rosenberg, G. (2011). ''Syrnola pyrrha'' (Bartsch, 1915). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=588493 on 2012-01-12]
Description
The shell has an elongate-conic shape. it is creamy yellow, with a narrow, golden brown band situated about one-fourth of the distance between the
apex and
suture posterior to the suture. (The whorls of the protoconch are decollated). The
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 of the
teleoconch are slightly rounded, and feebly shouldered at the summit. They are marked with numerous fine, slightly retractive, incremental lines, and exceedingly fine, spiral striatums. The periphery of the
body whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk.
In gastropods
In gastropods, the b ...
is well rounded. The base of the shell is slightly produced, well rounded, and marked like the
spire. The
aperture is subquadrate. The posterior angle is obtuse. The
outer lip is thin. The inner lip is flexuous, slightly reflected, and provided with a moderately strong fold a little anterior to its insertion. The parietal wall is glazed with a thin callus.
P. Bartsch (1915), Report on the Turton Collection of South African Marine Mollusks; United States National Museum, Bulletin 91, p. 73
/ref>
Distribution
The type specimen of this marine species was found off Port Alfred
A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Ha ...
, South Africa.
References
External links
To World Register of Marine Species
{{Taxonbar, from=Q13655694
Pyramidellidae
Gastropods described in 1915