MolluscaBase taxon details
original description
(of Pleurotoma (Drillia) variabilis E. A. Smith, 1877) Smith, E. A. (1877). Diagnoses of new species of Pleurotomidae in the British Museum. <em>Annals and Magazine of Natural History.</em> ser. 4, 19: 488-501., available online at https://www.biodiversitylibrary.org/page/19241774
page(s): 495. [details]
basis of record
Kilburn R.N. (1988). Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 4. Subfamilies Drillinae, Crassispirinae and Strictispirinae. <em>Annals of the Natal Museum.</em> 29(1): 167-320.
page(s): 276, figs 237-238 (holotype figured). [details]
additional source
Patterson Edward, J. K.; Ravinesh, R. & Biju Kumar, A. (2022). Molluscs of the Gulf of Mannar, India and adjacent waters: A fully illustrated guide. Suganthi Devadason Marien Research Institute & Department of Aquatic Biology and Fisheries, University of Kerala. Tuticorin. i-xx, 1-524.
page(s): 251, text fig. [details]