Cavolinia gibbosa

Abstract

Cavolinia gibbosa (d'Orbigny, 1835) (Figs 4 A-B) Description. – A large Cavolinia (L 9.5 mm) with markedly protruding dorsal lip, straight ventral lip base, and marked caudal spine. The dorsal shell has very weak longitudinal ribs, otherwise smooth. Ventral part of the shell globose with weak transverse riblets. The lateral spines point slightly in caudal direction. Translucent with narrow brown line along ventral lip. Remarks. – This large species is easily recognised based on the markedly protruding dorsal lip. Distribution. – Very few specimens of this large species have been found on the middle shelf Batu Mat coral bank and at the Royal Charlotte atoll (both at 20 m depth).

Authors 4

1. Han
2. J. G. M.
3. Raven Aachen

   Naturalis Biodiversity Center

   Affiliation as printed

   Research Associate, Naturalis Biodiversity Center, Leiden, The Netherlands. E-mail: han. raven @ naturalis. nl; https: // orcid. org / 0000 - 0002 - 5305 - 0795

4. David J. Marshall

   Universiti Brunei Darussalam

   Affiliation as printed

   Environmental and Life Sciences, Faculty of Science, Universiti Brunei Darussalam, Brunei Darussalam. https: // orcid. org / 0000 - 0003 - 3771 - 5950 * Corresponding author. E-mail: david. marshall @ ubd. edu. bn