Achatina chilensis (R. P. Lesson, 1830) accepted as Plectostylus chilensis (R. P. Lesson, 1830) (basis of record)
Achatina couroupa R. P. Lesson, 1830 accepted as Lissachatina fulica (Bowdich, 1822) (original description)
Arca oceanica R. P. Lesson, 1831 accepted as Anadara oceanica (R. P. Lesson, 1831) (original description)
Arion ascensionis R. P. Lesson, 1831 (original description)
Auricula (Conovulus) sciuri R. P. Lesson, 1831 (original description)
Auricula (Conovulus) viola R. P. Lesson, 1831 accepted as Melampus viola (R. P. Lesson, 1831) (original description)
Auricula fluviatilis R. P. Lesson, 1831 (original description)
Auricula mioxi R. P. Lesson, 1831 (original description)
Auricula vespertilionis R. P. Lesson, 1831 accepted as Cassidula vespertilionis (R. P. Lesson, 1831) (original description)
Buchanania R. P. Lesson, 1831 (original description)
Buchanania onchidioides R. P. Lesson, 1831 (original description)
Bulimus chilensis R. P. Lesson, 1830 accepted as Plectostylus chilensis (R. P. Lesson, 1830) (original description)
Bulimus shongii R. P. Lesson, 1830 accepted as Placostylus hongii (R. P. Lesson, 1830) accepted as Maoristylus hongii (R. P. Lesson, 1830) (original description)
Calyptraea (Calypeopsis) R. P. Lesson, 1831 accepted as Crucibulum Schumacher, 1817 (original description)
Calyptraea (Calypeopsis) quiriquinae R. P. Lesson, 1831 accepted as Crucibulum quiriquinae (R. P. Lesson, 1831) (original description)
Calyptraea (Calypeopsis) rugosa R. P. Lesson, 1831 accepted as Crucibulum scutellatum (W. Wood, 1828) (original description)
Calyptraea (Calypeopsis) tubifera R. P. Lesson, 1831 accepted as Crucibulum spinosum (G. B. Sowerby I, 1824) (original description)
Calyptraea (Crepidula) monoxyla R. P. Lesson, 1831 accepted as Maoricrypta monoxyla (R. P. Lesson, 1831) (original description)
Calyptraea (Crepipatella) R. P. Lesson, 1831 accepted as Crepipatella R. P. Lesson, 1831 (original description)
Calyptraea (Crepipatella) adolphei R. P. Lesson, 1831 accepted as Crepipatella peruviana (Lamarck, 1822) (original description)
Calyptraea (Crepipatella) chiliensis R. P. Lesson, 1831 (original description)
Calyptraea (Crepipatella) depressa R. P. Lesson, 1831 (original description)
Calyptraea (Sigapatella) R. P. Lesson, 1831 accepted as Sigapatella R. P. Lesson, 1831 (original description)
Calyptraea (Sigapatella) novaezelandiae R. P. Lesson, 1831 accepted as Sigapatella novaezelandiae (R. P. Lesson, 1831) (original description)
Calyptraea (Sigapatella) scutum R. P. Lesson, 1831 (original description)
Calyptraea (Trochatella) R. P. Lesson, 1831 accepted as Trochita Schumacher, 1817 (original description)
Calyptraea (Trochatella) araucana R. P. Lesson, 1831 (original description)
Calyptraea navicella R. P. Lesson, 1831 accepted as Crepidula navicella (R. P. Lesson, 1831) (original description)
Clausilia punctatissima R. P. Lesson, 1831 accepted as Bahiensis punctatissimus (R. P. Lesson, 1831) (original description)
Cleodora quadrispinosa R. P. Lesson, 1831 accepted as Clio cuspidata (Bosc, 1801) (original description)
Clio quadrispinosa Rang, 1831 accepted as Clio cuspidata (Bosc, 1801) (original description)
Clithon coronoides R. P. Lesson, 1831 accepted as Clithon corona (Linnaeus, 1758) (original description)
Clithon nigrispinis R. P. Lesson, 1831 (original description)
Clithon undatus R. P. Lesson, 1831 accepted as Clithon spinosum (G. B. Sowerby I, 1825) (original description)
Clithon variabilis R. P. Lesson, 1831 accepted as Clithon corona (Linnaeus, 1758) (original description)
Columbella paytensis R. P. Lesson, 1831 (original description)
Conoelix swainsonii R. P. Lesson, 1830 (original description)
Cyclas nepeanensis R. P. Lesson, 1831 accepted as Corbicula australis (Deshayes, 1830) (original description)
Cyclostoma lutea R. P. Lesson, 1831 (original description)
Cyclostoma massena R. P. Lesson, 1831 accepted as Leptopoma massena (R. P. Lesson, 1831) (original description)
Cyclostoma vitreum R. P. Lesson, 1831 accepted as Leptopoma perlucidum (Grateloup, 1840) (original description)
Cyrena (Cyprina) keraudrenia R. P. Lesson, 1831 accepted as Batissa violacea (Lamarck, 1818) (original description)
Cyrena papua R. P. Lesson, 1831 accepted as Geloina papua (R. P. Lesson, 1831) (original description)
Eolidia lottini R. P. Lesson, 1831 accepted as Phidiana lottini (R. P. Lesson, 1831) (original description)
Fissurella costata R. P. Lesson, 1831 (original description)
Fissurella nigra R. P. Lesson, 1831 (original description)
Fissurella obovalis R. P. Lesson, 1831 (original description)
Fissurella radiosa R. P. Lesson, 1831 (original description)
Helicigona (Helix) ferussacii R. P. Lesson, 1831 accepted as Papuina ferussacii (R. P. Lesson, 1831) (original description)
Helicina lutea R. P. Lesson, 1831 (original description)
Helicina margaritacea R. P. Lesson, 1831 (original description)
Helicina miniata R. P. Lesson, 1831 accepted as Orobophana miniata (R. P. Lesson, 1831) (original description)
Helicina zonata R. P. Lesson, 1831 (original description)
Helisiga R. P. Lesson, 1831 (original description)
Helisiga sanctaehelenae R. P. Lesson, 1831 (original description)
Helix (Caracolla) papua R. P. Lesson, 1831 accepted as Trochomorpha papua (R. P. Lesson, 1831) (original description)
Helix (Caracolla) planorbis R. P. Lesson, 1831 accepted as Trochomorpha froggatti (Iredale, 1941) (original description)
Helix (Pileolus) R. P. Lesson, 1831 accepted as Megalacron I. Rensch, 1934 (original description)
Helix (Pileolus) gabertii R. P. Lesson, 1831 (original description)
Helix (Pileolus) tuffetii R. P. Lesson, 1831 accepted as Megalacron coniformis (A. Férussac, 1821) (original description)
Helix atrorubra R. P. Lesson, 1831 (original description)
Helix cheiri R. P. Lesson, 1831 (original description)
Helix discoides R. P. Lesson, 1831 (original description)
Helix fasciolata R. P. Lesson, 1831 accepted as Planispira zonaria (Linnaeus, 1767) (original description)
Helix lemniscata R. P. Lesson, 1831 (original description)
Helix lituus R. P. Lesson, 1831 accepted as Papuina lituus (R. P. Lesson, 1831) (original description)
Helix multizona R. P. Lesson, 1831 accepted as Papuina multizona (R. P. Lesson, 1831) (original description)
Helix radama R. P. Lesson, 1826 accepted as Ampelita madagascariensis (Lamarck, 1816) (basis of record)
Helix rangii R. P. Lesson, 1831 accepted as Figuladra lessoni (L. Pfeiffer, 1846) (original description)
Helix rufa R. P. Lesson, 1831 accepted as Hemiplecta rufa (R. P. Lesson, 1831) (original description)
Helix sordidus R. P. Lesson, 1831 accepted as Bostryx sordidus (R. P. Lesson, 1831) (original description)
Helix tortilabia R. P. Lesson, 1831 accepted as Cristigibba tortilabia (R. P. Lesson, 1831) (original description)
Littorina novaehiberniae R. P. Lesson, 1831 accepted as Littoraria scabra (Linnaeus, 1758) (original description)
Loligo oualaniensis R. P. Lesson, 1830 accepted as Sthenoteuthis oualaniensis (R. P. Lesson, 1830) (original description)
Mactra radiosa R. P. Lesson, 1831 (original description)
Melania aspera R. P. Lesson, 1831 accepted as Thiara aspera (R. P. Lesson, 1831) (original description)
Melania blossevilliana R. P. Lesson, 1831 accepted as Stenomelania plicaria (Born, 1778) (original description)
Melania doreyana R. P. Lesson, 1831 accepted as Mieniplotia scabra (O. F. Müller, 1774) (original description)
Melania erosa R. P. Lesson, 1831 (original description)
Melania fauna R. P. Lesson, 1831 (original description)
Melania graciosa R. P. Lesson, 1831 (original description)
Melania inermis R. P. Lesson, 1831 accepted as Balanocochlis glans (von dem Busch, 1842) (original description)
Melania mauriciae R. P. Lesson, 1831 accepted as Melanoides tuberculata (O. F. Müller, 1774) (original description)
Melania offachiensis R. P. Lesson, 1831 accepted as Stenomelania plicaria (Born, 1778) (original description)
Melania spinescens R. P. Lesson, 1831 accepted as Mieniplotia scabra (O. F. Müller, 1774) (original description)
Melania terebra R. P. Lesson, 1831 accepted as Melanoides tuberculata (O. F. Müller, 1774) (original description)
Melania waigiensis R. P. Lesson, 1831 accepted as Stenomelania waigiensis (R. P. Lesson, 1831) (original description)
Monoceros giganteum R. P. Lesson, 1831 accepted as Chorus giganteus (R. P. Lesson, 1831) (original description)
Natica glauca R. P. Lesson, 1830 accepted as Hypterita helicoides (Gray, 1825) (original description)
Navicella depressa R. P. Lesson, 1831 (original description)
Navicella zebra R. P. Lesson, 1831 accepted as Septaria porcellana (Linnaeus, 1758) (original description)
Nerea R. P. Lesson, 1831 accepted as Scyllaea Linnaeus, 1758 (original description)
Nerea punctata R. P. Lesson, 1831 accepted as Scyllaea fulva Quoy & Gaimard, 1824 (original description)
Nerita novaeguineae R. P. Lesson, 1831 (original description)
Nerita novaehiberniae R. P. Lesson, 1831 accepted as Nerita ascensionis Gmelin, 1791 (original description)
Nerita otaitensis R. P. Lesson, 1831 accepted as Nerita plicata Linnaeus, 1758 (original description)
Neritina (Neripteron) R. P. Lesson, 1831 accepted as Neripteron R. P. Lesson, 1831 (original description)
Neritina (Neripteron) mauriciae R. P. Lesson, 1831 accepted as Neripteron mauriciae (R. P. Lesson, 1831) (original description)
Neritina (Neripteron) taitensis R. P. Lesson, 1831 accepted as Neripteron taitense (R. P. Lesson, 1831) (original description)
Neritina amphibia R. P. Lesson, 1831 accepted as Neritodryas cornea (Linnaeus, 1758) (original description)

Chilean Exclusive Economic Zone for Trochus ater R. P. Lesson, 1831 
Society Islands for Terebra caerulescens var. otaitensis R. P. Lesson, 1831