The Neritopsidae and the Neritidae of the Bracklesham Group (Early and Middle Eocene) of the Hampshire Basin

Gastropods of the families Neritopsidae and Neritidae in the Bracklesham Group (Early and Middle Eocene) of the Hampshire Basin, southern England, are reviewed and three previously undescribed taxa are introduced. The new species are; Pseudodostia selseyensis sp. nov., Pseudodostia traceyi sp. nov. and Clithon (Pictoneritina) stintoni sp. nov. A lectotype is designated for Nerita namnetica Vasseur, 1882. A neotype is designated for Neritopsis parisiensis Deshayes, 1864. New combinations introduced are: Pseudodostia namnetica (Vasseur, 1882), Clithon (Pictoneritina) passyanus (Deshayes, 1864) and Clithon (Pictoneritina) waltoni (Symonds, 2002).