MolluscaBase taxon details
original description
(of Helicina crassicostata G. B. Sowerby II, 1866) Sowerby, G. B. II. (1866). Second monograph of the genus <i>Helicina</i>, including the genera <i>Trochatella</i>, <i>Lucidella</i>, <i>Helicina</i>, <i>Schiascheila</i> [sic!] and <i>Alcadia</i>, of authors. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 3 (24-25): 277-302, pls 266-278. London, privately published. , available online at https://www.biodiversitylibrary.org/page/15940704
page(s): 282, pl. 268, fig. 97 [details]