Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
SuperOrdo: Eupulmonata
Ordo: Stylommatophora
SubOrdo: Helicina
InfraOrdo: Rhytidoidei
Superfamilia: Rhytidoidea
Familia: Rhytididae
Subfamilia: Rhytidinae
Genus: Schizoglossa
Species (4): S. gigantea – †S. major – S. novoseelandica – S. worthyae
Name
Schizoglossa Hedley, 1893
Gender: [feminine?]
Type Species: Daudebardia novoseelandica Pfeiffer, 1862
Fixation: original designation [see p. 391 [and monotypy]
References
Primary references
Hedley, C. 1893. Schizoglossa; a new genus of carnivorous snails. Proceedings of the Linnean Society of New South Wales (2), 7: 387–392, plates ix-x. BHL [first availability, see p. 391
Additional references
Powell, A.W.B. 1979. New Zealand Mollusca: marine, land and freshwater shells. William Collins Publishers Ltd: Auckland. ISBN 0-00-216906-1 Reference page. [see p. 347]
Schileyko, A. A. 2000. Treatise on Recent terrestrial pulmonate molluscs. Part 6. Ruthenica (Suppl. 2): 743.
Links
Schizoglossa in the World Register of Marine Species
Vernacular names
English: Paua slug
Schizoglossa, common name the Pāua slugs, is a genus of medium-sized to large predatory, air-breathing, land slugs, carnivorous terrestrial pulmonate gastropod molluscs in the family Rhytididae. They are currently classified by the New Zealand Department of Conservation as Nationally Vulnerable.[2]
Distribution
The genus is endemic to the North Island of New Zealand (including the Great Barrier Island),
Species and subspecies
Species and subspecies within the genus Schizoglossa include:[3]
Schizoglossa gigantea Powell, 1930
Schizoglossa major Powell, 1938 - subfossil only
Schizoglossa novoseelandica (Pfeiffer, 1862)
Schizoglossa novoseelandica novoseelandica (Pfeiffer, 1862)
Schizoglossa novoseelandica barrierensis Powell, 1949
Schizoglossa worthyae Powell, 1949
Description
The shell is small, rudimentary, auriform (ear-shaped) and is situated far back on the animal. The shell is incapable of containing the body, and is reduced to the function of a shield for the lungs and heart. The shell is paucispiral, and is nacreous within. The columella is excavated into a pit for the reception of the shell-muscle.[1]
The animal has no rachidian teeth.[1]
Ecology
Schizoglossa has eggs with a calcareous surface which lacks cuticle.[4]
References
This article incorporates public domain text from reference.[1]
Hedley C. (16 March 1893) "Schizoglossa: a new genus of carnivorous snails". Proceedings of the Linnean Society of New South Wales 7(III): 387-392. Linnean Society of New South Wales. Plate IX-X.
Mahlfeld, K.; Brook, F. J.; Roscoe, D. J.; Hitchmough, R. A.; Stringer, I. A.N. (2012). "The conservation status of New Zealand terrestrial Gastropoda excluding Powelliphanta". New Zealand Entomologist. 35 (2): 103–109. doi:10.1080/00779962.2012.686313. ISSN 0077-9962. S2CID 85205568.
New Zealand Mollusca
O'Connor A. C. (June) 1945. Notes on the Eggs of New Zealand Paryphantidae, With Description of a New Subgenus. Transactions of the Royal Society of New Zealand, volume 5, 1945-46, pages 54-57.
Further reading
Wikispecies has information related to Schizoglossa.
Powell, A. W. B. (1949). "The Paryphantidae of New Zealand: No. VI. Distribution, hybrids and new species of Paryphanta, Rhytida and Schizoglossa". Records of the Auckland Institute and Museum. 3: 347–367. ISSN 0067-0464. JSTOR 42906026. Wikidata Q58676678.
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