A revision of the Recent Australian species of the turrid genera Clavus, Plagiostropha, and Tylotiella (Mollusca: Gastropoda)

Abstract

Species of the drilliine genera Clavus (16 species), Plagiostropha (2 species), and Tylotiella (1 species) from Australian waters are revised. Four new species of Clavus are described from off Western Australia. Clavus viduus (Reeve, 1845) is regarded as a synonym of C. unizonalis (Lamarck, 1822). Clavus lamberti (Montrouzier, 1860), C. laetus (Hinds, 1843) and C. obliquatus (Reeve, 1845) and tentatively C. flammulatus Montfort, 1810 are recorded from Australia for the first time. Clavus undatus (Hedley, 1907) from New South Wales is recorded for the first time from Western Australia. The genus Plagiostropha Melvill, 1927 is separated from Clavus. Two species are recorded from Australia, one of which is described as new. Tylotiella pica (Reeve, 1843) is recorded from the Australian Indian Ocean territory of Christmas Island, but not continental Australia.