Cavolinia globulosa

Abstract

Cavolinia globulosa (Gray, 1850) (Figs 4 C-H) Description. – A medium large Cavolinia (L 5 mm) with rounded dorsal lip, ventral lip with median depression, and short caudal spine. The dorsal shell has five vaguely indicated broad longitudinal ribs, weaker towards the caudal spine mark, otherwise smooth. Ventral part of the shell globose with marked transverse riblets. The lateral spines point slightly in caudal direction. White with brown near the ventral lip. Remarks. – Differs from Cavolinia gibbosa in being smaller, much more globose, having a rounded dorsal lip, a more rounded ventral lip base and shorter caudal spine. Distribution. – A single specimen in the middle shelf mud near Batu Mat, Sarawak; several specimens on the continental slope off Sarawak (DD15, DD53, DD54) and a few on the outer shelf of Sabah (DD92); abundant in Brunei middle shelf (MES15, 25) and small numbers in Brunei outer shelf (MES24).

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