White shell, up to 6cm long, distinctive by absence of slit or apical hole, though there is a small indent in the ... [details]
Sowerby's original description used the spelling ruppellii. However, the name honors the German naturalist Eduard ... [details]
R. asperum in <139> and R. asper in MacDonald <296>. [details]
Pinaxia treated as a subgenus of Thais in Vaught [details]