Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p125
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 125/276)
Character Range: 498880–502059

Caiza J & Köhler F (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(5–6), 334–443.
Iredale T (1945) The land mollusca of Norfolk Island. Australian Zoologist 11, 46–71.
Ponder WF (1997) Conservation status, threats and habitat requirements of Australian terrestrial and freshwater mollusca. Memoirs of the Museum of Victoria 56, 421–430.
Smith BJ (1992) Non-marine Mollusca, in WWK Houston (ed) Zoological Catalogue of Australia Volume 8. Australian Government Publishing Service, Canberra.
TSSC (Threatened Species Scientific Committee) (2009c) Commonwealth Listing Advice on Mathewsoconcha phillipii. Department of the Environment, Water, Heritage and the Arts, Canberra.
Varman RVJP (1991) Conchological Survey 1983-90: Manuscript of Land Mollusca Fossiliferous and Present Day. Unpublished manuscript.

Advena stoddartii—Stoddart's glass-snail

Conservation significance
Endemic to the Norfolk Island Group.
EPBC Act Listing Status: Critically Endangered (listed as Quintalia stoddartii).
Non-statutory Listing Status: Listed as Extinct on the IUCN Red List (IUCN 2020).
Approved Conservation Advice: 19/12/2008 (DEWHA 2008e).

Description
The species has an imperforate, depressed conical shell with dimensions of at least 14mm diameter and 8mm height.

Distribution
Early records and sub-fossil material suggest this species once occurred on all three islands. In the early 1900s this species made up as much as 9% of total snail specimens collected on Norfolk Island. However, recent surveys have failed to locate this species; it was last collected at Ball Bay and Duncombe Bay in 1945, and is likely extinct on Norfolk Island.
No museum-held specimens from Phillip Island exist apart from the type material that was collected in 1834 (Hyman 2005). A specimen that is currently held in a private collection was collected from Phillip Island in the 1990s, indicating that this species may have survived. While no specimens were found in a single recent targeted survey, the lack of sampling from Phillip Island provides hope that it may still be extant there.

Ecology
Live-bearing.

Habitat
Saxicoline, under rocks (Smith 1992).

Threats
Major threats include habitat loss, fragmentation and degradation by land clearing and stock grazing, as well as the introduction of feral animals (notably rats) and invasive weeds. Drying conditions and lower soil moisture balances due to climate change remain a threat to endemic snails in the Norfolk Island Group.

Impact on other species
None known.

Risk assessment
Not undertaken as species is presumed extinct.

Management actions
Restore native forest habitat, control introduced weeds and predators (chickens, rodents), survey to determine the presence of any existing populations and if found to be extant, consider captive breeding.

Recovery target
Not applicable as species is presumed extinct.

Relevant literature
DEWHA (Department of the Environment, Water, Heritage and the Arts) (2008e) Approved Conservation Advice for Quintalia stoddartii (Stoddart's