WoRMS name details
original description
(of Trochita helicoidea G. B. Sowerby II, 1883) Sowerby, G. B. II. (1883). Monograph of the family Calyptraeidae. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 5 (39-40): 55–74, pl. 445–453. London, privately published. , available online at https://www.biodiversitylibrary.org/page/16085046 page(s): 64, pl. 449 figs 53-54. [details]
basis of record
Kilburn, R.N. & Rippey, E. (1982) Sea Shells of Southern Africa. Macmillan South Africa, Johannesburg, xi + 249 pp. page(s): 57 [details]
additional source
Steyn, D.G. & Lussi, M. (1998) Marine Shells of South Africa. An Illustrated Collector's Guide to Beached Shells. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 46. [details]
additional source
Branch, G. M. (2002). Two Oceans. 5th impression. <em>David Philip, Cate Town & Johannesburg.</em> , available online at http://books.google.es/books?id=W_2QB8ftLgcC [details]
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