Silverstripe-Biblio17<style face="normal" font="default" size="100%">Opinion 2481: Clausilia index Mousson, 1863,&nbsp;Clausilia semilamellata Mousson, 1863, Clausilia derasa Mousson,&nbsp;1863 (Gastropoda, Stylommatophora, Clausiliidae): specific names&nbsp;conserved by suppression of the respective senior synonyms,&nbsp;Clausilia unilamellata Mousson, 1856, Clausilia multilamellata&nbsp;Mousson, 1856 and Clausilia firmata Mousson, 1856</style>