WoRMS taxon details
Semicassis pyrum (Lamarck, 1822)
591450 (urn:lsid:marinespecies.org:taxname:591450)
accepted
Species
Cassidea multisecta H. J. Finlay, 1924 † · unaccepted (junior subjective synonym)
Cassidea stadialis Hedley, 1914 · unaccepted (junior subjective synonym)
Cassis nivea Brazier, 1872 · unaccepted (junior subjective synonym)
Cassis pirum · unaccepted (misspelling)
Cassis pyrum Lamarck, 1822 · unaccepted (superseded combination)
Cassis striatus F. W. Hutton, 1873 † · unaccepted (invalid: junior homonym of Cassis...)
invalid: junior homonym of Cassis striatus J. Sowerby, 1812; Cassidea multisecta Finlay, 1924 is a replacement name
Cassis tumida Petterd, 1886 · unaccepted (junior subjective synonym)
Phalium pyrum (Lamarck, 1822) · unaccepted (superseded combination)
Phalium stadiale (Hedley, 1914) · unaccepted (synonym)
Semicassis (Semicassis) pyrum (Lamarck, 1822) · alternative representation
Semicassis pyrum f. hamiltoni (A. W. B. Powell, 1928) · unaccepted (synonym)
Semicassis pyrum pyrum (Lamarck, 1822) · unaccepted (no subspecies distinction in use)
Xenogalea denda Cotton, 1945 · unaccepted (junior subjective synonym)
Xenogalea finlayi Iredale, 1927 · unaccepted (junior subjective synonym)
Xenogalea halli Cotton, 1954 · unaccepted (junior subjective synonym)
Xenogalea mawsoni Cotton, 1945 · unaccepted (junior subjective synonym)
Xenogalea powelli H. J. Finlay, 1928 · unaccepted (junior subjective synonym)
Xenogalea pyrum (Lamarck, 1822) · unaccepted (superseded combination)
Xenogalea spectabilis Iredale, 1929 · unaccepted (junior subjective synonym)
Xenogalea stadialis (Hedley, 1914) · unaccepted (synonym)
Xenogalea wilsoni Cotton, 1954 · unaccepted (junior subjective synonym)
Xenophalium (Xenogalea) abernethyi Dell, 1956 · unaccepted (junior subjective synonym)
Xenophalium (Xenogalea) matai A. W. B. Powell, 1952 · unaccepted > junior subjective synonym
Xenophalium abernethyi Dell, 1956 · unaccepted (junior subjective synonym)
Xenophalium finlayi (Iredale, 1927) · unaccepted (synonym)
Xenophalium hamiltoni A. W. B. Powell, 1928 · unaccepted (junior subjective synonym)
Xenophalium harrisonae A. W. B. Powell, 1928 · unaccepted (junior subjective synonym)
Xenophalium matai A. W. B. Powell, 1952 · unaccepted > junior subjective synonym
Xenophalium pyrum (Lamarck, 1822) · unaccepted (superseded combination)
Xenophalium pyrum pyrum (Lamarck, 1822) · unaccepted (superseded combination)
Xenophalium wanganuiense A. W. B. Powell, 1928 † · unaccepted (junior subjective synonym)
- Forma Semicassis pyrum f. hamiltoni (A. W. B. Powell, 1928) accepted as Semicassis pyrum (Lamarck, 1822) (synonym)
- Subspecies Semicassis pyrum pyrum (Lamarck, 1822) accepted as Semicassis pyrum (Lamarck, 1822) (no subspecies distinction in use)
marine, brackish, fresh, terrestrial
recent + fossil
(of Cassis pyrum Lamarck, 1822) Lamarck, [J.-B. M.] de. (1822). <i>Histoire naturelle des animaux sans vertèbres</i>. Tome septième, 711 pp. Paris, published by the author. , available online at http://www.biodiversitylibrary.org/item/47433
page(s): 226 [details]
page(s): 226 [details]
Type locality contained in Australian part of the Tasman Sea
type locality contained in Australian part of the Tasman Sea [from synonym] [view taxon] [details]
MolluscaBase eds. (2025). MolluscaBase. Semicassis pyrum (Lamarck, 1822). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=591450 on 2025-07-12
Date
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The webpage text is licensed under a Creative Commons
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Nomenclature
original description
(of Cassis pyrum Lamarck, 1822) Lamarck, [J.-B. M.] de. (1822). <i>Histoire naturelle des animaux sans vertèbres</i>. Tome septième, 711 pp. Paris, published by the author. , available online at http://www.biodiversitylibrary.org/item/47433
page(s): 226 [details]
original description (of Xenogalea finlayi Iredale, 1927) Iredale, T. (1927). A review of Australian helmet shells (family Cassididae — phylum Mollusca). <em>Records of the Australian Museum.</em> 15(5): 321-354, pls 31-32., available online at http://australianmuseum.net.au/journal/Iredale-1927-Rec-Aust-Mus-155-321354
page(s): 342 [details] Available for editors
[request]
original description (of Xenophalium hamiltoni A. W. B. Powell, 1928) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 639, figs 25,26 [details]
original description (of Cassis nivea Brazier, 1872) Brazier, J. (1872). Description of three new species of marine shells from Australia. <em>Proceedings of the Zoological Society of London.</em> 1872: 616-617., available online at https://biodiversitylibrary.org/page/28612044
page(s): 616, pl. 46, fig. 1 [details]
original description (of Cassis striatus F. W. Hutton, 1873 †) Hutton, F. W. (1873). Catalogue of the Tertiary Mollusca and Echinodermata of New Zealand, in the collection of the Colonial Museum. <em>Didsbury, Government Printer, Wellington.</em> xvi + 48 pp. [details]
original description (of Xenogalea halli Cotton, 1954) Cotton, B. C. (1954). Family Cassididae. <em>Royal Society of South Australia Malacological Section No. 4 [4 pages].</em> [details]
original description (of Cassis tumida Petterd, 1886) Petterd, W. F. (1886). New species of Tasmanian marine shells. <em>Papers and Proceedings of the Royal Society of Tasmania for 1885.</em> 320-321., available online at https://www.biodiversitylibrary.org/page/31752357
page(s): 321 [details]
original description (of Cassidea stadialis Hedley, 1914) Hedley, C. (1914). Mollusca. in: Biological Results of the Fishing Experiments carried out by the F.I.S. "Endeavour" 1909-14 (H. C. Dannevig, Commonwealth Director of Fisheries), volume II, part 2: 63-74, pls 8-12. , available online at https://www.biodiversitylibrary.org/page/12036241#page/85/mode/1up
page(s): 72 [details]
original description (of Cassidea multisecta H. J. Finlay, 1924 †) Finlay H.J. (1924). Some necessary changes in the names of New Zealand Mollusca. <em>Proceedings of the Malacological Society of London.</em> 16: 99-107.
page(s): 101 [details] Available for editors [request]
original description (of Xenogalea powelli H. J. Finlay, 1928) Finlay, H. J. (1928). The Recent Mollusca of the Chatham Islands. <em>Transactions of the New Zealand Institute.</em> 59: 232-286.
page(s): 247 [details] Available for editors [request]
original description (of Xenogalea denda Cotton, 1945) Cotton, B. C. (1945). Southern Australian Gastropoda. Part I. Streptoneura. <em>Transactions of the Royal Society of South Australia.</em> 69(1): 150-171., available online at https://www.biodiversitylibrary.org/page/41565010 [details]
original description (of Xenophalium wanganuiense A. W. B. Powell, 1928 †) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 637 [details]
original description (of Xenophalium harrisonae A. W. B. Powell, 1928) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 640 [details]
original description (of Xenophalium (Xenogalea) abernethyi Dell, 1956) Dell, R. K. (1956). The archibenthal Mollusca of New Zealand. <em>Dominion Museum Bulletin.</em> 18: 1-235.
page(s): 86 [details]
original description (of Xenogalea spectabilis Iredale, 1929) Iredale, T. (1929). Mollusca from the continental shelf of eastern Australia. No 2. <em>Records of the Australian Museum.</em> 17(4): 157-189 [4 September 1929]., available online at http://australianmuseum.net.au/journal/Iredale-1929-Rec-Aust-Mus-174-157189
page(s): 178 [details] Available for editors [request]
original description (of Xenogalea mawsoni Cotton, 1945) Cotton, B. C. (1945). Southern Australian Gastropoda. Part I. Streptoneura. <em>Transactions of the Royal Society of South Australia.</em> 69(1): 150-171., available online at https://www.biodiversitylibrary.org/page/41565010 [details]
original description (of Xenophalium (Xenogalea) matai A. W. B. Powell, 1952) Powell, A. W. B. (1952). New Zealand molluscan systematics, with descriptions of new species. Part 1. <em>Records of the Auckland Institute and Museum.</em> 4: 169-185., available online at https://www.biodiversitylibrary.org/page/60717671
page(s): 178 [details]
original description (of Xenogalea wilsoni Cotton, 1954) Cotton, B. C. (1954). Family Cassididae. <em>Royal Society of South Australia Malacological Section No. 4 [4 pages].</em> [details]
basis of record Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. <em>in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.</em> Canterbury University Press, Christchurch. [details]
page(s): 226 [details]
original description (of Xenogalea finlayi Iredale, 1927) Iredale, T. (1927). A review of Australian helmet shells (family Cassididae — phylum Mollusca). <em>Records of the Australian Museum.</em> 15(5): 321-354, pls 31-32., available online at http://australianmuseum.net.au/journal/Iredale-1927-Rec-Aust-Mus-155-321354
page(s): 342 [details] Available for editors
[request]original description (of Xenophalium hamiltoni A. W. B. Powell, 1928) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 639, figs 25,26 [details]
original description (of Cassis nivea Brazier, 1872) Brazier, J. (1872). Description of three new species of marine shells from Australia. <em>Proceedings of the Zoological Society of London.</em> 1872: 616-617., available online at https://biodiversitylibrary.org/page/28612044
page(s): 616, pl. 46, fig. 1 [details]
original description (of Cassis striatus F. W. Hutton, 1873 †) Hutton, F. W. (1873). Catalogue of the Tertiary Mollusca and Echinodermata of New Zealand, in the collection of the Colonial Museum. <em>Didsbury, Government Printer, Wellington.</em> xvi + 48 pp. [details]
original description (of Xenogalea halli Cotton, 1954) Cotton, B. C. (1954). Family Cassididae. <em>Royal Society of South Australia Malacological Section No. 4 [4 pages].</em> [details]
original description (of Cassis tumida Petterd, 1886) Petterd, W. F. (1886). New species of Tasmanian marine shells. <em>Papers and Proceedings of the Royal Society of Tasmania for 1885.</em> 320-321., available online at https://www.biodiversitylibrary.org/page/31752357
page(s): 321 [details]
original description (of Cassidea stadialis Hedley, 1914) Hedley, C. (1914). Mollusca. in: Biological Results of the Fishing Experiments carried out by the F.I.S. "Endeavour" 1909-14 (H. C. Dannevig, Commonwealth Director of Fisheries), volume II, part 2: 63-74, pls 8-12. , available online at https://www.biodiversitylibrary.org/page/12036241#page/85/mode/1up
page(s): 72 [details]
original description (of Cassidea multisecta H. J. Finlay, 1924 †) Finlay H.J. (1924). Some necessary changes in the names of New Zealand Mollusca. <em>Proceedings of the Malacological Society of London.</em> 16: 99-107.
page(s): 101 [details] Available for editors
[request]original description (of Xenogalea powelli H. J. Finlay, 1928) Finlay, H. J. (1928). The Recent Mollusca of the Chatham Islands. <em>Transactions of the New Zealand Institute.</em> 59: 232-286.
page(s): 247 [details] Available for editors
[request]original description (of Xenogalea denda Cotton, 1945) Cotton, B. C. (1945). Southern Australian Gastropoda. Part I. Streptoneura. <em>Transactions of the Royal Society of South Australia.</em> 69(1): 150-171., available online at https://www.biodiversitylibrary.org/page/41565010 [details]
original description (of Xenophalium wanganuiense A. W. B. Powell, 1928 †) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 637 [details]
original description (of Xenophalium harrisonae A. W. B. Powell, 1928) Powell, A. W. B. (1928). The recent and Tertiary cassids of New Zealand and a study in hybridisation. <em>Transactions of the New Zealand Institute.</em> 59: 629-642., available online at https://paperspast.natlib.govt.nz/periodicals/TPRSNZ1928-59.2.6.16
page(s): 640 [details]
original description (of Xenophalium (Xenogalea) abernethyi Dell, 1956) Dell, R. K. (1956). The archibenthal Mollusca of New Zealand. <em>Dominion Museum Bulletin.</em> 18: 1-235.
page(s): 86 [details]
original description (of Xenogalea spectabilis Iredale, 1929) Iredale, T. (1929). Mollusca from the continental shelf of eastern Australia. No 2. <em>Records of the Australian Museum.</em> 17(4): 157-189 [4 September 1929]., available online at http://australianmuseum.net.au/journal/Iredale-1929-Rec-Aust-Mus-174-157189
page(s): 178 [details] Available for editors
[request]original description (of Xenogalea mawsoni Cotton, 1945) Cotton, B. C. (1945). Southern Australian Gastropoda. Part I. Streptoneura. <em>Transactions of the Royal Society of South Australia.</em> 69(1): 150-171., available online at https://www.biodiversitylibrary.org/page/41565010 [details]
original description (of Xenophalium (Xenogalea) matai A. W. B. Powell, 1952) Powell, A. W. B. (1952). New Zealand molluscan systematics, with descriptions of new species. Part 1. <em>Records of the Auckland Institute and Museum.</em> 4: 169-185., available online at https://www.biodiversitylibrary.org/page/60717671
page(s): 178 [details]
original description (of Xenogalea wilsoni Cotton, 1954) Cotton, B. C. (1954). Family Cassididae. <em>Royal Society of South Australia Malacological Section No. 4 [4 pages].</em> [details]
basis of record Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. <em>in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.</em> Canterbury University Press, Christchurch. [details]
Other
additional source
Darragh, T. A. (2023). A taxonomic revision of Australian Cenozoic Cassidae and Tonnidae species (Mollusca, Gastropoda). <em>Alcheringa: An Australian Journal of Palaeontology.</em> 48(1): 168-190., available online at https://doi.org/10.1080/03115518.2023.2268689 [details] Available for editors [request]
additional source Darragh, T. A. (2024). A checklist of Australian marine Cenozoic Mollusca. <em>Memoirs of Museum Victoria.</em> 83: 37-206.
page(s): 81 [details] Available for editors [request]
[request]additional source Darragh, T. A. (2024). A checklist of Australian marine Cenozoic Mollusca. <em>Memoirs of Museum Victoria.</em> 83: 37-206.
page(s): 81 [details] Available for editors
[request]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
| Language | Name | |
|---|---|---|
| English | pear bonnet [from synonym] | [details] |
| German | Birnen-Helmschnecke [from synonym] | [details] |
To Biodiversity Heritage Library (1 publication) (from synonym Xenogalea denda Cotton, 1945)
To Biodiversity Heritage Library (13 publications) (from synonym Cassis nivea Brazier, 1872)
To Biodiversity Heritage Library (4 publications)
To Biodiversity Heritage Library (5 publications) (from synonym Cassidea stadialis Hedley, 1914)
To Conchology (Semicassis pyrum)
To European Nucleotide Archive, ENA (Semicassis pyrum)
To GenBank (3 nucleotides; 1 proteins) (from synonym Cassis pyrum Lamarck, 1822)
To GenBank (3 nucleotides; 1 proteins)
To Malacopics (Semicassis pyrum (Lamarck, 1822) Australia, Victoria, Bass Strait, at 2 m depth, col...
To Museum of New Zealand Te Papa (M.001697; Xenophalium hamiltoni Powell, 1928; holotype) (from synonym Xenophalium hamiltoni A. W. B. Powell, 1928)
To Museum of New Zealand Te Papa (M.009752; Xenophalium (Xenogalea) abernethyi Dell, 1956; holotype) (from synonym Xenophalium (Xenogalea) abernethyi Dell, 1956)
To NMNH Extant Collection (Semicassis pyrum (1) 879263)
To Biodiversity Heritage Library (13 publications) (from synonym Cassis nivea Brazier, 1872)
To Biodiversity Heritage Library (4 publications)
To Biodiversity Heritage Library (5 publications) (from synonym Cassidea stadialis Hedley, 1914)
To Conchology (Semicassis pyrum)
To European Nucleotide Archive, ENA (Semicassis pyrum)
To GenBank (3 nucleotides; 1 proteins) (from synonym Cassis pyrum Lamarck, 1822)
To GenBank (3 nucleotides; 1 proteins)
To Malacopics (Semicassis pyrum (Lamarck, 1822) Australia, Victoria, Bass Strait, at 2 m depth, col...
To Museum of New Zealand Te Papa (M.001697; Xenophalium hamiltoni Powell, 1928; holotype) (from synonym Xenophalium hamiltoni A. W. B. Powell, 1928)
To Museum of New Zealand Te Papa (M.009752; Xenophalium (Xenogalea) abernethyi Dell, 1956; holotype) (from synonym Xenophalium (Xenogalea) abernethyi Dell, 1956)
To NMNH Extant Collection (Semicassis pyrum (1) 879263)
