Neptunea 9(3)

Click on the cover to discover the contents of the papers

About the variability of Bolma jacquelineae (Marche-Marchad, 1957) (Mollusca: Gastropoda: Turbinidae), p. 1-2, pl. I-IX, by Frank Nolf

Nolf (2005) introduced the species name Bolma christianeae for specimens of a Bolma from Angola half a decade ago. These shells showed several differences with the similar B. jacquelineae (Marche-Marchad, 1957). However, after studying more than fifty specimens from São Tomé (Gulf of Guinea) it must be admitted that both belong to the same species. We can assume the population living in waters off Angola is merely a local form of B. jacquelineae, living at a depth of about 75 m. Intermediates between both species can occasionally be found at depths of 25-45 m in the Gulf of Guinea.

Keywords: Mollusca, TURBINIDAE, Bolma christianeae, Bolma jacquelineae, W Africa, variability, local form.

Fusinus rostratus (Olivi, 1792) (Mollusca: Gastropoda: Fasciolariidae) a rock dweller in the intertidal zone of the Bay of Morlaix, Brittany, France, p. 12-13, 3 plates, by Frank Nolf

Recently (2006-2008), specimens of Fusinus rostratus (Olivi, 1792) were found in the Bay of Morlaix (Brittany, France) (Le Duff, Grall & Quiniou, 2008; Nolf, 2009). These specimens were obtained from beam trawlers at a depth of 7-9 m on a bottom of dead shells or muddy maerl. In August 2010 the author caught one live specimen in about the same area at low tide.

Keywords: Mollusca, FASCIOLARIIDAE, Fusinus rostratus, invader, Brittany, France, Mediterranean Sea, intertidal zone.
Some remarks about Phenacovolva patriciae Nolf, 2008 (Mollusca: Gastropoda: Ovulidae), p. 16, by Frank Nolf

The present paper makes clear that the holotype of Phenacovolva patriciae is deposited in the RBINS and not in the MNHN as wrongly stated by Lorenz & Fehse (2009).

Keywords: Mollusca, OVULIDAE, Phenacovolva patriciae, holotype.
Europicardium nolfi (Mollusca: Bivalvia: Cardiidae) a new species from Angola, p. 17-19, 9 plates, by Frank Swinnen

Since more than forty years (1966) an aberrant form of Europicardium caparti is present in the collection Nolf (Oostende, Belgium). This specimen was trawled by Belgian fishermen working for the PEMARCO in the North of Angola. A decade ago another specimen was obtained from Mussulo Bay by a Portuguese shell collector. It turned out that these shells belong to an undescribed species, which can only be confused with E. caparti (Nicklès, 1955).

Keywords: Mollusca, CARDIIDAE, Europicardium, new taxon, W Africa.