Tectus is a genus of sea snails, marine gastropod mollusks in the family Tegulidae.
Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than long. The outer lip is lirate within. The columella is very short, vertical, with a strong spiral fold, ending anteriorly in a knob or point.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
Distribution This marine genus has a wide distribution. It occurs in the Persian Gulf, the Red Sea, in the Central and East Indian Ocean and off East Africa, Oceania, Indo-China, Indo-Malaysia, the Philippines, East India, Australia (New South Wales, Northern Territory, Queensland, Western Australia), Kermadec Islands, New Caledonia, Anadaman Islands.
Species Species within the genus Tectus include: † Tectus altavillensis (Defrance, 1828) Tectus architectonicus A. Adams, 1853 † Tectus athenasi (Vasseur, 1882) † Tectus aulacophorus (Cossmann & Pissarro, 1905) † Tectus bareti (Vasseur, 1882) † Tectus bourdoti (Cossmann & Pissarro, 1902) † Tectus branderi (Defrance, 1828) † Tectus britannus (Vasseur, 1882) † Tectus chavani Glibert, 1962 † Tectus chenui Le Renard, 1994 † Tectus cognatus (J. de C. Sowerby, 1840) † Tectus crenularis (Lamarck, 1804) Tectus (Tectus) dentatus (Forskål in Niebuhr, 1775) † Tectus extraconicus Gain, Belliard & Le Renard, 2019 Tectus fabrei (Montrouzier in Fischer, 1878) Tectus fenestratus (Gmelin, 1791) † Tectus fluctus Gain, Belliard & Le Renard, 2019 † Tectus fredevillensis Gain, Belliard & Le Renard, 2019 † Tectus funiculosus (Deshayes, 1832) † Tectus gabrielis (d'Orbigny, 1850) † Tectus gervillii Gain, Belliard & Le Renard, 2019 † Tectus leae Gain, Belliard & Le Renard, 2019 † Tectus margaritaceus (Deshayes, 1832) Tectus mauritianus (Gmelin, 1791) † Tectus monilifer (Lamarck, 1804) † Tectus montissanctipetri (Binkhorst, 1861) † Tectus morgani (Cossmann & Pissarro, 1905) Tectus noduliferus'''' (Lamarck, 1822) † Tectus ornatus (Lamarck, 1804) † Tectus planibasis Gain, Belliard & Le Renard, 2019 Tectus pyramis (Born, 1778) † Tectus richardi Gain, Belliard & Le Renard, 2019 Tectus royanus (Iredale, 1912) † Tectus spinalis Gain, Belliard & Le Renard, 2019 † Tectus subcanaliculatus (Deshayes, 1863) † Tectus torticostulus Gain, Belliard & Le Renard, 2019 Tectus triserialis (Lamarck, 1822)
Species brought into synonymy Tectus concavus (Gmelin, 1791): synonym of Infundibulum concavum (Gmelin, 1791) Tectus conus (Gmelin, 1791): synonym of Rochia conus (Gmelin, 1791) Tectus elatus (Lamarck, 1822): synonym of Rochia elata (Lamarck, 1822) Tectus magnificus Poppe, 2004: synonym of Rochia magnifica (Poppe, 2004) Tectus maximus (Koch in Philippi, 1844): synonym of Rochia maxima (Koch, 1844) Tectus niloticus (Linnaeus, 1767): synonym of Rochia nilotica (Linnaeus, 1767) Tectus pagodalis Montfort, 1810: synonym of Tectus mauritianus (Gmelin, 1791) Tectus tentorium (Gmelin, 1791): synonym of Trochus tentorium Gmelin, 1791 Tectus tabidus Reeve, L.A., 1861: synonym of Tectus pyramis (Born, 1778) Tectus virgatus (Gmelin, 1791): synonym of Rochia virgata (Gmelin, 1791)
References
Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). . XII, 195 pp Williams S.T., Karube S. & Ozawa T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined''. Zoologica Scripta 37: 483–506
External links
Montfort P. (Denys de). (1808-1810). Conchyliologie systématique et classification méthodique des coquilles. Paris: Schoell. Vol. 1: pp. lxxxvii + 409 . Vol. 2: pp. 676 + 16 Schumacher, C. F. (1817). Essai d'un nouveau système des habitations des vers testacés. Schultz, Copenghagen. iv + 288 pp., 22 pls. Swainson, W. (1840). A treatise on malacology or shells and shell-fish. London, Longman. viii + 419 pp