Ethalia omphalotropis explained

Ethalia omphalotropis is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.^[1]

Description

The small, semi-transparent shell has an ovate-discoidal shape. Its colour is white and entirely devoid of coloured markings. The 3½ convex whorls increase rapidly in size with deeply marked sutures. The body whorl has a spherical periphery. This species has a peculiar sharp keel surrounding the umbilicus. The aperture has an almost circular shape.^[2]

Distribution

This marine species occurs off Japan.

References

• Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.

External links

• To World Register of Marine Species

Notes and References

1. Bouchet, P. (2014). Ethalia omphalotropis A. Adams, 1863. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=732107 on 2014-06-29
2. Web site: A. . Adams. Ann. Mag. 1865, p. 266 . 2014-06-30 . https://web.archive.org/web/20160303212838/http://www.forgottenbooks.com/readbook_text/The_Annals_and_Magazine_of_Natural_History_1863_1000884511/275 . 2016-03-03 . dead .