MolluscaBase name details
original description
Cooke, A. H. (1922). On <i>Alopia cyclostoma</i> Bielz, <i>A. canescens</i> (Charp.) and <i>A. deaniana</i>, n. sp. <em>Journal of Conchology.</em> 16(9): 302-306, pl. 9., available online at https://www.biodiversitylibrary.org/page/31904959
page(s): 304, pl. 9 figs 4, 9 [details]