Bulimulus duncanus Dall, 1893



Taxonomy & Nomenclature

Synonym/s: Naesiotus duncanus (Dall, 1893)


Conservation Status

Missing (Cowie et al., 2017)

Last record: late 1800's?

IUCN RedList status: Critically Endangered (Possibly Extinct)



Pinzón, Galápagos Islands, Ecuador


Biology & Ecology










Original scientific description:

Dall, W. H. (1893). Preliminary notice of new species of land-shells from the Galapagos Islands, collected by Dr. G. Baur. Nautilus 7(5): 52-56.


Other references:

Breure, Abraham S. H. and Borrero, F. J. (2008). An annotated checklist of the land snail family Orthalicidae (Gastropoda: Pulmonata: Orthalicoidea) in Ecuador, with notes on the distribution of the mainland species. Zootaxa 1768: 1-40.

Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.

Dall, W. H. (1896). Insular land-shell faunas, especially as illustrated by the data obtained by Dr. G. Baur in the Galapagos Islands. Proceedings of the Academy of Natural Sciences of Philadelphia: 395-460.

Dall, William Healey. (1900). Additions to the insular land-shell faunas of the Pacific coast, especially of the Galapagos and Cocos Islands. Proceedings of the Academy of Natural Sciences of Philadelphia [1900]: 88-106.

Dall, W. H. and Ochsner, W. H. (1928). Landshells of the Galapagos Islands. Proceedings of the California Academy of Sciences, 4th Series. 17(5): 141-185.

MolluscaBase eds. (2022). MolluscaBase. Bulimulus (Naesiotus) duncanus Dall, 1893. Accessed at: on 2022-04-02

Parent, C. (2003). Bulimulus duncanus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 17 June 2013.


<< Back to the Orthalicoidei database