- MARJORIE FOGAN (1991) Mollusca in fiction
- ALAN J. KOHN (1991) Paintings of paralectotypes?: Conus of the Museum Ludovicae Ulricae
- ANDRZEJ WIKTOR & ADRIAN NORRIS (1991) Geomalacus malagensis sp. n. and some remarks concerning generic level systematics of Arionidae (Gastropoda:Pulmonata)
- KARL-OTTO NAGEL (1991) On some freshwater molluscs (Gastropoda and Bivalvia) from Sierra Leone
