Colus (lat. colus, distaff) is a genus of sea snails, marine gastropod mollusks in the family Buccinidae, the true whelks.
The name Colus is not available from Humphrey, 1797 (published in a work placed on the Official Index). Most recent authors use the name Colus Röding, 1798 for the genus instead of Sipho Bruguière, 1792. Iredale (1919b) mentioned: "This name cannot be defended by anyone" and was rejected by the ICZN (Op. 21). Also Tritonofusus Beck, 1874 cannot be used because of the rules of priority.
Species within the genus Colus include:
Colus aurariae Fraussen, Rosado, Afonso & Monteiro, 2009
Colus azygosorius Tiba, 1980
Colus barbarinus Dall, 1919
Colus bukini Kantor, 1984
Colus glaber (Kobelt, 1876)
Colus gracilis (da Costa, 1778)
Colus griseus (Dall, 1889)
Colus halimeris (Dall, 1919)
Colus holboelli (Møller, 1842)
Colus islandicus (Mohr, 1786)
Colus jeffreysianus (Fischer P., 1868)
Colus kujianus Tiba, 1973
Colus minor (Dall, 1925)
Colus pubescens (A. E. Verrill, 1882)
Colus pulcius (Dall, 1919)
Colus pygmaeus (Gould, 1841)
Colus rushii (Dall, 1889)
Colus sabini (Gray J.E., 1824)
Colus stimpsoni (Mørch, 1868)
Colus syrtensis (Packard, 1867)
Colus terraenovae Bouchet & Warén, 1985
Colus turgidulus (Friele, 1877)
Names brought into synonymy
Colus callorhinus (Dall, 1877): synonym of Plicifusus rodgersi (Gould, 1860)
Colus dautzenbergi Dall, 1916: synonym of Anomalisipho verkruezeni (Kobelt, 1876)
Colus esychus (Dall, 1907): synonym of Aulacofusus esychus (Dall, 1907)
Colus howsei (J.T.Marshall, 1902): synonym of Colus jeffreysianus (P. Fischer, 1868)
Colus jessoensis (Schrenck, 1863): synonym of Retifusus jessoensis (Schrenck, 1863)
Colus latericeus (Møller, 1842): synonym of Retifusus latericeus (Möller, 1842)
Colus roseus (Dall, 1877): synonym of Retifusus roseus (Dall, 1877)
Colus ryukyuensis Lan, 2002: synonym of Calagrassor poppei (Fraussen, 2001)
Species represented in the fossil record
†Colus altus
†Colus gracilis
†Colus hollboelli
†Colus islandicus
†Colus pygmaeus
†Colus stimpsoni
