''Clanculus berthelotii'' 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
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 Trochidae, the top snails.
Description
The size of the shell varies between 5 mm and 11 mm. The small shell has a globose-conic shape and is very similar in form to ''
Clanculus corallinus''. The five
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 are acutely granose-lirate. They are brown, below the
sutures more or less maculated with blackish. The base of the shell is dotted with white. 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 encircled by 11 sharply granose ridges, those of the base profoundly separated by deep grooves, wider than the ridges. The
aperture is as in ''Clanculus corallinus'', but the tooth at base of
columella is more pointed and smaller.
H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
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Distribution
This species occurs in the North Atlantic Ocean (the Azores, Madeira
)
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and the Canary Islands
The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Morocc ...
)
References
* d'Orbigny A. D., 1839–1842: ''Mollusques, Echinodermes, Foraminifères et Polypiers recueillis aux Iles Canaries par MM. Webb et Berthelot et décrits par Alcide d'Orbigny. Mollusques''; Béthune, Paris
* Thorson G., 1967: ''Clanculus bertheloti d’Orbigny, 1839: eine brutpflegende prosobranchiate Schnecke aus der Brandungszone von Teneriffa''. Zeitschrift für Morphologie und Ökologie der Tiere 60(1–3): 162–175
* Gofas, S.; Le Renard, J.; Bouchet, P. (2001). ''Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification''. Collection Patrimoines Naturels, 50: pp. 180–213
External links
*
{{DEFAULTSORT:Clanculus Berthelotii
berthelotii
Gastropods described in 1840