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Taxon profile

species

Acteon danaida W. H. Dall, 1881

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Allogastropoda »  family Acteonidae »  genus Acteon

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Acteon danaida

Author: Dall, W.H.

Taxon in country check-lists*

North America: United States of America, South America: Brazil

* List of countries might not be complete

Description

Shell elongated, moderately pointed, polished, white, and having about six whorls ; spiral sculpture of (on the spire) six, or (on the last whorl) over twenty-five punctate grooves, more crowded anteriorly, but with two or three coarser than the rest, just in advance of the suture ; between these original grooves in the latter half of the last whorl intercalary single or double grooves appear, which are seldom quite as deep as the originals, and at first are not punctate, but at last, and especially near the anterior extreme of the shell, become nearly as well marked as the original series ; transverse sculpture consisting only of lines of growth, by a peculiar thickening of certain of which when they cross the grooves the punctate appearance is produced ; nucleus eroded, minute ; suture appressed, distinct, but the thin appressed anterior margin seems peculiarly liable to erosion, which in some cases takes place so as to produce the appearance of a channelled suture ; whorls slightly rounded ; outer lip thin, simple, somewhat produced in the middle, passing imperceptibly into the thin twisted pillar, which is slightly reflected, and bears one inconspicuous, very oblique fold ; body with a thin layer of callus; aperture rounded in front, rather narrow, pointed behind; no umbilical chink in this or any of the preceding species. Lon. of shell, 11.0 ; of last whorl, 7.75; of aperture, 6.25. Max. lat. of shell, 5.25 ; of aperture, 3.0 mm.
An elegant and excessively punctate species, which looks as if it might have been pelted by a shower of little coins.
Dall, W.H., 1881. Reports on the results of dredging under the supervision of Alexander Agassiz, in the Gulf of Mexico and in the Caribbean Sea, 1877–79. Preliminary report on the Mollusca.
Type Locality: Blake sta. 43, south of Dry Tortugas
Range: 30.98°N to 9.02°S; 82.85°W to 34.18°W
Depth: 370 to 620 m
Maximum Reported Size: 11 mm
Distribution: USA: Georgia, South of Dry Tortugas, Florida; Brazil: Alagoas
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Acteon danaida Dall, 1881]
Data retrieved on: 23 November 2013

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