original description
(of Cyclostoma lithidion G. B. Sowerby I, 1843) Sowerby, G. B. I. (1843). Monograph of the genus <i>Cyclostoma</i>. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 1 (3): 89-156, pl. 23-31. London, privately published. [23 June]. , available online at https://biodiversitylibrary.org/page/11076319
page(s): 111, pl. 31, fig. 262 [details]
original description
(of Lithidion sulcatum Gray, 1850) Gray, J. E. (1850). [Descriptions of taxa] In: [Baird, W. & Gray, J. E.], <i>Nomenclature of molluscous animals and shells in the collection of the British Museum. Part I. Cyclophoridae</i>. British Museum, London. 69 pp. , available online at https://www.biodiversitylibrary.org/page/39306790 [details]
original description
(of Cyclostoma depressum G. B. Sowerby I, 1850) Sowerby, G. B. I. (1850). Descriptions of some additional species of <i>Cyclostoma</i>. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 2 (11): 157*–168*, pls 31A, 31B. London, privately published. , available online at https://www.biodiversitylibrary.org/page/43937435
page(s): 161, pl. 31b, figs 306, 307. [details]
original description
(of Lithidion marmorosum Godwin-Austen, 1881) Godwin-Austen, H. H. (1881). On the land-shells of the Island of Socotra collected by Prof. Bayley Balfour. Part I. Cyclostomaceae. <em>Proceedings of the Zoological Society of London.</em> 49 (2): 251-258, pls 27-28. London [August]., available online at https://www.biodiversitylibrary.org/page/30759398
page(s): 256 [details]
additional source
Neubert, E. (1998). Annotated checklist of the terrestrial and freshwater molluscs of the Arabian Peninsula with descriptions of new species. <em>Fauna of Arabia.</em> 17: 333-461.
page(s): 342, Figs 23-28 [details] Available for editors [request]
additional source
Neubert, E. (2009). The continental malacofauna of Arabia and adjacent areas. VI. Pomatiidae of Arabia, Socotra and northeast Africa, with descriptions of new genera and species (Gastropoda: Caenogastropoda: Littorinoidea). Fauna of Arabia, 24: 47-127. Riyadh / Basel [10 May].
page(s): 86, Plate 13 a–c, Fig. 9 [details] Available for editors [request]
From editor or global species database