Plagiostropha flexus is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
Distribution This marine species is endemic to Australia and occurs in the demersal zone off Croker Island, Gulf of Carpentaria, Northern Territory, Australia at a depth of .
References
Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295 Wells, F.E. 1991. A revision of the Recent Australian species of the turrid genera Clavus, Plagiostropha, and Tylotiella (Mollusca: Gastropoda). Journal of the Malacological Society of Australasia 12: 1–33