SierraiaSierraia is a genus of freshwater snails with an operculum, aquatic prosobranch gastropod mollusks in the family Bithyniidae.SpeciesSpecies in the genus Sierraia include:Sierraia expansilabrum Brown, 1988 - vulnerable, from Sierra LeoneSierraia leonensis Connolly, 1929 - vulnerable, from Sierra LeoneSierraia outambensis Brown, 1988 - critically endangered, from Sierra LeoneSierraia whitei Brown, 1988 - least concern, from Sierra LeoneDistributionThis genus occurs in Sierra Leone.