original description
(of Pleurotoma (Drillia) layardi G. B. Sowerby III, 1897) Sowerby, G. B. III. (1897). <i>Appendix to marine shells of South Africa: a catalogue of all the known species with references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured</i>. London: G.B. Sowerby, 42 pp., 8 pls. , available online at https://www.biodiversitylibrary.org/page/13297112
page(s): 2, pl. 8, figs 3, 4. [details]
From editor or global species database
Type locality Orignial 'Pondoland' locality restricted to Dwesa [E. Cape] by Kilburn (1988: 239) [details]