Heliacus
| Heliacus | |
|---|---|
 | |
| Shell of Heliacus fallaciosus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Family: | Architectonicidae |
| Genus: | Heliacus d'Orbigny, 1842 |
| Type species | |
| Solarium herberti Deshayes, 1830 | |
| Synonyms | |
| |
Heliacus is a genus of gastropods belonging to the family Architectonicidae.
General characteristics
(Original description in French) The operculum is corneous and conical, increasing in diameter from the apex to the base; its inner side is smooth with a central point; all the rest is composed of spirally coiled lamellae which decrease in diameter and are always fringed at their circumference. The shell is usually higher than the other sundials, with a narrower umbilicus.
(Described as Gyriscus in Latin) The shell is turbinate, conico-turreted, and umbilicate; the apex is blunt, with the tip involuted; the whorls are rounded and transversely girdled; the aperture is subcircular, with the margins sharp and joined by a callus, the columellar lip being reflected. The operculum is corneous (horny), multispiral on the upper part, and provided with a stylet-like process on the lower part.
Distribution
The Heliacus species are typically found in warm-temperate to tropical waters globally, from the intertidal zone down to the subtidal and occasionally deeper.
Species
- † Heliacus albertinae (Sacco, 1892)
- Heliacus anaglyptus Woodring, 1959 [citation needed]
- † Heliacus angularis Makiyama, 1927
- † Heliacus antu S. N. Nielsen & Frassinetti, 2007
- Heliacus areola (Gmelin, 1791)
- Heliacus asteleformis (Powell, 1965)
- † Heliacus bahamondei Frassinetti & Covacevich, 1981
- †Heliacus berthae (O. Boettger, 1902)
- Heliacus bisulcatus (d'Orbigny, 1842)
- Heliacus caelatus (Hinds, 1844)
- Heliacus cerdaleus (Melvill & Standen, 1903)
- † Heliacus chonos S. N. Nielsen & Frassinetti, 2007
- Heliacus corallinus Garrard, 1978
- Heliacus costatus (Schepman, 1909)
- Heliacus cylindricus (Gmelin, 1791)
- † Heliacus darraghi Garrard, 1978
- † Heliacus deningeri (K. Martin, 1914)
- Heliacus discoideus (Pease, 1868)
- Heliacus enoshimensis (Melvill, 1891)
- Heliacus fallaciosus (Tiberi, 1872)
- Heliacus fenestratus (Hinds, 1844)
- Heliacus geminus Bieler, 1993
- † Heliacus globosus Harzhauser & Landau, 2023
- Heliacus hyperionis Bieler, 1993
- Heliacus imperfectus Suter, 1917 [citation needed]
- Heliacus implexus (Mighels, 1845)
- Heliacus infundibuliformis (Gmelin, 1791)
- Heliacus jeffreysianus (Tiberi, 1867)
- † Heliacus lowei Durham, 1950
- Heliacus madurensis (Schepman, 1909)
- Heliacus malani (Dautzenberg, 1910)
- Heliacus mazatlanicus Pilsbry & H.N.Lowe, 1932
- Heliacus mighelsi (Philippi, 1853)
- Heliacus miser (Dujardin, 1837)
- † Heliacus morningtonensis Garrard, 1978
- Heliacus nereidis Bieler, 1993
- Heliacus oceanitis Bieler, 1993
- † Heliacus otwayanus Garrard, 1978
- Heliacus otwayanus Garrard, 1978
- Heliacus planispira Pilsbry & H.N.Lowe, 1932
- Heliacus ponderi Garrard, 1978
- Heliacus proteus Bieler, 1993
- † Heliacus radiatus (Borson, 1821)
- † Heliacus reticulatus Dockery, 1993
- † Heliacus robertsae Durham, 1950
- Heliacus reticulatus Dockery, 1993
- Heliacus rotula Kilburn, 1975
- Heliacus splendidus Poppe & Tagaro, 2026
- † Heliacus stefanmeszarosi Biskupič, 2024
- Heliacus sterkii (Pilsbry & Vanatta, 1908)
- Heliacus stramineus (Gmelin, 1791)
- † Heliacus taverai Frassinetti & Covacevich, 1981
- Heliacus trochoides (Deshayes, 1830)
- Heliacus turritus Bieler, 1987
- Heliacus variegatus (Gmelin, 1791)
- Heliacus verdensis Bieler, 1984
- Heliacus virgatus (Hinds, 1844)
- † Heliacus wannonensis (Tenison Woods, 1879)
- Heliacus willianseverii Tenório, Barros, Francisco & Silva, 2011
- Heliacus worsfoldi Quinn, 1981
References
- 1 2 MolluscaBase eds. (2025). MolluscaBase. Heliacus A. d'Orbigny, 1842. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=137663 on 2025-11-13
- 1 2 "Heliacus d'Orbigny, 1842". www.gbif.org. Retrieved 13 October 2021.
- ↑ Orbigny, A. d'. (1841-1853). Mollusques. In: R. de la Sagra (ed.). Histoire physique, politique et naturelle de l'Ile de Cuba. Arthus Bertrand, Paris.
This article incorporates text from this source, which is in the public domain. - ↑ Tiberi, N. (1867). "Diagnose du nouveau genre méditerranéen Gyriscus". Journal de Conchyliologie. 15: 303. This article incorporates text from this source, which is in the public domain.
- SeaLifeBase
- Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
- Bieler, R. (1987). Die Gattungen der Architectonicidae (Gastropoda: Allogastropoda). Teil 4: Heliacus (Pyrgoheliacus) n. subgen. und Architectonica (Adelphotectonica) n. subgen. Archiv für Molluskenkunde. 117 (4/6): 203-215, pls. 1-2
- Bieler, R. (1993). Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda). Abhandlungen des Naturwissenschaftlichen Vereins in Hamburg. NF. 30: 1-376
External links
- Bieler, R. (1993). Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda). Abhandlungen des Naturwissenschaftlichen Vereins in Hamburg. NF. 30: 1-376, T. (1936). "Bieler, R. (1993). Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda). Abhandlungen des Naturwissenschaftlichen Vereins in Hamburg. NF. 30: 1-376". Records of the Australian Museum. 19 (5): 327.
{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link) - Iredale, T. (1957). "An exciting find". Proceedings of the Royal Zoological Society of New South Wales. 1955–1956: 124.
- Rochebrune, A.T. de (1881). "Sur un type nouveau de la famille des Cyclostomaceae". Bulletin de la Société Philomatique de Paris. 7 (5): 110.
Wikimedia Commons has media related to Heliacus.