WoRMS source details

Haynes, A. 2005. An evaluation of members of the genera Clithon Montfort, 1810 and Neritina Lamarck 1816 (Gastropoda: Neritidae). Molluscan Research 25(2): 75-84.
The spermatophores, the male head region and penis and the operculum of 10 species of Clithon and 14 species of Neritina are described. The female reproductive systems of species of Clithon and Neritina are compared. The study confirmed that two genera can be recognised. Species of Clithon, whether spined (e.g., C. spinosa, C. corona) or not (e.g., C. olivaceus, C. oualaniensis), have a curved indentation along the middle of the operculum, spermatophores with a long filament, a penis pouch in the head region and a short vaginal duct. Neritina species are more variable but their spermatophores lack a long filament, they have no penis pouch and they have a long vaginal duct that leaves the vagina near the spermatophore sac.
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Clithon bicolor (Récluz, 1843) (additional source)
Clithon castaneum accepted as Clithon castanea (Hombron & Jacquinot, 1848) (basis of record)
Clithon corona (Linnaeus, 1758) (basis of record)
Clithon coronata [sic] accepted as Clithon coronatum (Leach, 1815) (basis of record)
Clithon diadema (Récluz, 1841) (additional source)
Clithon francoisi (Mabille, 1895) (additional source)
Clithon olivacea [sic] accepted as Clithon olivaceum (Récluz, 1843) (basis of record)
Clithon pritchardi (Dohrn, 1861) (basis of record)
Clithon spinosus [sic] accepted as Clithon spinosum (G. B. Sowerby I, 1825) (basis of record)
Neritina auriculata Lamarck, 1816 accepted as Neripteron auriculatum (Lamarck, 1816) (additional source)
Neritina canalis Sowerby I, 1825 (basis of record)
Neritina gagates Lamarck, 1822 (additional source)
Neritina granosa Sowerby I, 1825 (basis of record)
Neritina macgillivrayi Reeve, 1855 (basis of record)
Neritina neglecta Pease, 1861 accepted as Neripteron neglectum (Pease, 1861) (basis of record)
Neritina oweniana (W. Wood, 1828) (basis of record)
Neritina pulligera (Linnaeus, 1767) (additional source)
Neritina punctulata Lamarck, 1816 accepted as Nereina punctulata (Lamarck, 1816) (additional source)
Neritina taitensis Lesson, 1831 accepted as Neripteron taitense (Lesson, 1831) (basis of record)
Neritina turrita (Gmelin, 1791) (basis of record)
Neritina variegata Lesson, 1831 accepted as Vittina variegata (Lesson, 1831) (basis of record)
Neritina virginea (Linnaeus, 1758) (additional source)