A new subgenus and three new species of Brazilian deep waters Olivella (Mollusca, Gastropoda, Olivellidae) collected by the RV Marion Dufresne in 1987

Publication Type:Journal Article
Year of Publication:2003
Authors:Absalão, R. S., Pimenta A. D.
Keywords:Brazil, Recent

Anasser n. subgen., a new subgenus of Olivella Swainson, 1831, is proposed based on the absence of any kind of pillar structure and the presence of a parietal callus reaching the apertural end but not above it. Three new species are described from Brazilian deep waters: Olivella (Anasser) careorugula n. sp. is medium sized, oblong outline, whorls strongly convex and with a large subsutural white band; Olivella (Olivina) hyphala n. sp. is large, relatively bigbelled and presents a milk-white subsutural belt; and Olivella (Olivina) klappenbachi n. sp. is medium sized, roughly obconic, resembling a whirligig with protoconch large and rounded.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith