Advena stoddartii flosculus (Cox, 1866:48)



Taxonomy & Nomenclature

Synonym/s: Helix flosculus Cox, 1866:695 (original combination); Carthaca flosculus (Cox, 1866:695); Quintalia flosculus (Cox, 1866:48)


Helix patescens was removed from the synonymy of this species by (Hyman et al., 2023).


Conservation Status

Extinct (Régnier et al., 2009; Cowie et al., 2017)

IUCN RedList status: Extinct



Norfolk Island, Australia


Biology & Ecology










Original scientific description:

Cox, J. C. (1866). Description d'espèces nouvelles provenant d'Australie et des îles Solomon et Norfolk. Journal de Conchyliologie 14: 45-48.


Other references:

Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.

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.

Cox, J. C. (1870). Descriptions of seventeen new species of land shells from the South Sea Islands, in the cabinet of Mr John Brazier of Sydney. Proceedings of the Zoological Society of London. 1870: 81-85.

Hyman, Isabel T., Caiza, Jennifer and Köhler, Frank. (2023). Systematic revision of the microcystid land snails endemic to Norfolk Island (Gastropoda: Stylommatophora) based on comparative morpho-anatomy and mitochondrial phylogenetics. Invertebrate Systematics 37(6): 334-443.

MolluscaBase eds. (2021). MolluscaBase. Quintalia flosculus (Cox, 1866). Accessed at: on 2022-03-26

MolluscaBase eds. (2023). MolluscaBase. Advena stoddartii flosculus (J. C. Cox, 1866). Accessed at: on 2023-07-26

Mollusc Specialist Group. (1996). Quintalia flosculus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. ( Downloaded on 28 January 2012.

Mollusc Specialist Group. 1996. Quintalia flosculus. The IUCN Red List of Threatened Species 1996: e.T19057A8803034. Accessed on 02 July 2022.

Pilsbry. (1892). Man. Conch. (Tyron), ser. 2, 8: 77.

Régnier, Claire, Fontaine, Benoît and Bouchet, Philippe. (2009). Not Knowing, Not Recording, Not Listing: Numerous Unnoticed Mollusk Extinctions. Conservation Biology 23(5): 1214-1221.

Sykes. (1900). Proc. Mal. Soc. (Lond.) 4: 143.


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