Sowerby, G. B. I. (1843). Monograph of the genus Cyclostoma. In G. B. Sowerby II (ed.), Thesaurus conchyliorum, or monographs of genera of shells. Vol. 1 (3): 89-156, pl. 23-31. London, privately published. [23 June].
298015
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]