Agathotoma candidissima

Agathotoma candidissima
	Shell of Agathotoma candidissima (specimen at MNHN, Paris)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Mangeliidae
Genus:	Agathotoma
Species:	A. candidissima
Binomial name
	Agathotoma candidissima; (C.B. Adams, 1845)
Synonyms[1]
	Agathotoma badia (Reeve, 1846); Agathotoma densestriata (C. B. Adams, 1850); Lachesis candidissima (C.B. Adams, 1845); Mangelia badia Reeve, 1846; Mangelia hornbeckii Reeve, 1846; Mangelia densestriata C. B. Adams, 1850; Pleurotoma badia Reeve, 1846; Pleurotoma candidissima Adams C. B., 1845 (basionym); Pleurotoma hexagona Pfeiffer, 1840; Pleurotoma (Mangilia) millestriata E. A. Smith, 1882; Pyrgocythara candidissima (Adams C. B., 1845);

+ Agathotoma candidissima, common name Cox's mangelia, is a species of sea snail, a marine gastropod mollusc in the family Mangeliidae.[1]

Description

The length of the shell varies between 4 mm and 11 mm.

The white oblong, turreted shell contains 7 or 8 whorls (the nucleus of the specimen has broken off). The axial sculpture consists of 7 to 8 ribs. The manner in which some of the ribs on the body whorl turn suddenly at right angles to the base of the columella is very remarkable. The penultimate and the three or four preceding ribs exhibit this character. At the upper ends, a little below the suture, the ribs are faintly angled ; and the dots on the base in the upper whorls and on the middle and lower part in the body whorl are so faint that they might be easily overlooked. There are also a few faint dots between the ribs, just below the suture. The aperture is elongate-ovate and covers about 3/7 of the total length of the shell. The outer lip is incrassate and on top slightly insinuate. The siphonal canal is short. The base of the shell is truncated.[2]

Distribution

This species occurs in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles. Fossils have been found from the Early Pleistocene to the Middle Pleistocene in Southern Florida.[3]

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References

Agathotoma candidissima (C.B. Adams, 1845). Retrieved through: World Register of Marine Species on 7 August 2011.
Smith, E.A. (1882) Diagnoses of new species of Pleurotomidae in the British Museum. Annals and Magazine of Natural History, series 5, 10, 206–218 (described as Pleurotoma (Mangilia) millestriata)
"Neogene Atlas of Ancient Life in the Southeast of the United States: Agathotoma candidissima". Archived from the original on 2017-02-27. Retrieved 2017-02-26.

Pfeiffer, L. 1840. Uebersicht der im Januar, Februar und März 1839 auf Cuba gesammelten Mollusken. Archiv für Naturgeschichte 6(1) 250-261
C.B. Adams, Specierum novarum conchyliorum, in Jamaica repertorum, synopsis; Proceedings of the Boston Society of Natural History.v. 2 (1845-1848)
Reeve, L. 1846. Monograph of the genus Mangelia. Conchologia Iconica 3 pls. 1-8
Adams, C. B. 1850. Descriptions of supposed new species of marine shells, which inhabit Jamaica. Contributions to Conchology 4 56-68.
Smith, E. A. 1882. Diagnoses of new species of Pleurotomidae in the British Museum. Annals and Magazine of Natural History (5)10 206-218
Fargo, W. G. 1953. Pliocene Mollusca of Southern Florida. Part II. The Pliocene Turridae of Saint Petersburg, Florida. Monographs of the Academy of Natural Sciences of Philadelphia 18 365-409, pls. 16-24
Rolán E., Fernández-Garcés E. & Redfern C. (2012) New records and description of four new species of the genus Agathotoma (Gastropoda, Mangeliidae) in the Caribbean. Novapex 13(2): 45-62.

External links

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[WoRMS-1] Agathotoma candidissima (C.B. Adams, 1845). Retrieved through: World Register of Marine Species on 7 August 2011.

[2] Smith, E.A. (1882) Diagnoses of new species of Pleurotomidae in the British Museum. Annals and Magazine of Natural History, series 5, 10, 206–218 (described as Pleurotoma (Mangilia) millestriata)

[3] "Neogene Atlas of Ancient Life in the Southeast of the United States: Agathotoma candidissima". Archived from the original on 2017-02-27. Retrieved 2017-02-26.