Clathrodrillia tryoni

Clathrodrillia tryoni
Shell of Clathrodrillia tryoni (specimen at MNHN, Paris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Drilliidae
Genus:	Clathrodrillia
Species:	C. tryoni
Binomial name
Clathrodrillia tryoni (Dall, 1889)
Synonyms [1]
Drillia tryoniiDall, 1889 (original combination)

Clathrodrillia tryoni is a species of sea snail, a marine gastropod mollusk in the family Drilliidae. ^[1]

Description

The length of the shell varies between 8 mm and 18 mm.

(Original description) The appearance of the shell recalls Pyrgospira ostrearum (Stearns, 1872), but it is white, more acutely pointed, smaller, with a more gibbous varix in the adult, an umbilical chink on the columella, and a spirally threaded fasciole instead of a smooth one. The shell contains 8 moderately rounded whorls and a smooth protoconch. The sculpture shows 16–18 long transverse ribs extending across the whorls, fasciole and all. These are crossed by numerous (eleven on the last whorl but one) elevated, even, rounded threads, with about equal or wider interspaces. The threads are not swollen at the intersections. The suture is distinct. The fasciole but slightly excavated. On the body whorl, a quarter of a turn before the adult aperture is formed, is a prominent swollen rounded varix, or rib. The aperture is short. The body is callous. The columella is reflected, forming a distinct pseudo-umbilicus. The outer lip is thin, not lirate, and strongly arched. The short siphonal canal is curved. ^[2]

Distribution

This marine species occurs in the Caribbean Sea and in the Lesser Antilles (Barbados, Guadeloupe, Grenada and Saint Vincent and the Grenadines.

References

1. Bouchet, P. (2016). Clathrodrillia colombiana Fallon, 2016. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=871959 on 2016-08-04
2. Dall, W. H. 1889b. Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877–78) and in the Caribbean Sea (1879–80), by the U. S. Coast Survey Steamer 'Blake,' Bulletin of the Museum of Comparative Zoology 18 1–492, pls. 10–40 (described as Drillia tryonii)

• Fallon, P.J. (2016). "Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species". Zootaxa. 4090 (1): 1–363. doi:10.11646/zootaxa.4090.1.1. PMID   27394363.

External links

• "Clathrodrillia tryonii". Gastropods.com. Retrieved 15 January 2019.