What is "boucardicus"

Boucardicus is a genus of land snails with an operculum, terrestrial gastropod mollusks in the family Cyclophoridae. It is endemic to Madagascar, consist 199 species and 5 subspecies. Type species is Boucardicus notabilis (Smith, 1892). Included species are very diverse, some species are medium sized (about 10 mm) with conical shell, some are small (height 1.5-3.5 mm) with cylindrical "pupilloid-like" shell.