- labecula A. Adams, 1852 = Nassarius burchardi (family Nassariidae – Nassariinae)

- labiata Perry, 1811 = Semicassis labiata (family Tonnidae – Phaliinae)

- labiata Tenison Woods, 1876 = Crossea labiata (family Turbinidae – Skeneinae)

- labrotoma May, 1919 = Pisinna labrotoma (family Anabathridae)

- lacertinum Gould, 1861 = Cacozeliana granaria (family Cerithiidae – Bittiinae)

- lachryma Sowerby, 1832 = Proterato lachryma (family Triviidae – Eratoinae)

- lachrymosus May & Torr, 1912 = Acanthochitona coxi (family Acanthochitonidae – Acanthochitoninae)

- lactarius Iredale, 1925 = Stilapex lactarius (family Eulimidae)

- lactea A. Adams, 1853 (non Lamarck) = Callucina lacteola (family Lucinidae)

- lactea Angas, 1867 = Syrnola angasi (family Pyramidellidae – Syrnolinae)

- lactea Deshayes, 1830 = Cancellaria lactea (family Cancellariidae – Cancellariinae)

- lactea Hedley, 1902 = Mysella lactea (family Galeommatidae)

- lactea Hutton, 1880 = Austroginella muscaria (family Marginellidae – Marginellinae)

- lacteola Tate, 1897 = Callucina lacteola (family Lucinidae)

- lacteola Verco, 1909 = Filodrillia lacteola (family Conidae – Clathurellinae)

- lacteum Reeve, 1847 = Cominella lineolata (family Buccinidae – Buccininae)

- laetus Philippi, 1850 = Phasianotrochus irisodontes (family Trochidae – Trochinae)

- laevigata Donovan, 1808 = Haliotis laevigata (family Haliotidae)

- laevigata Sowerby, 1832 = Cancellaria lactea (family Cancellariidae – Cancellariinae)

- laevigata Sowerby, 1853 = Eumarcia fumigata (family Veneridae – Tapetinae)

- laeviplicata Laseron, 1948 = Alaginella ochracea (family Marginellidae – Marginellinae)

- lagopus Lamack, 1818 = Tawera lagopus (family Veneridae – Chioninae)

- lallemantianus Crosse & Fischer, 1865 = Guraleus lallemantianus (family Conidae – Mangeliinae)

- lalli Cotton, 1954 = Semicassis pyrum (family Tonnidae – Phaliinae)

- lamarckii Gray, 1838 = Callista kingii (family Veneridae – Pitariinae)

- lamellata Lamarck, 1818 = Circomphalus disjecta (family Veneridae – Chioninae)

- lamellosa Sowerby, 1896 = Nepotilla lamellosa (family Conidae – Rhaphitominae)

- lamellosa Watson, 1881 = Gazameda tasmanica (family Turritellidae – Turritellinae)

- laminatus Petterd, 1884 = Gemixystus laminatus (family Muricidae – Trophoninae)

- lampas rubicunda Perry, 1811 = Charonia lampas rubicunda (family Ranellidae – Cymatiinae)

- laperousi Schrenk, 1861 = Crassostrea gigas (family Ostreidae – Crassostreinae)

- largicrescens Tate, 1899 = Laevidentalium largicrescens (family Laevidentaliidae)

- largillierti Philippi, 1849 = Venerupis largillierti (family Veneridae – Tapetinae)

- laseroni Kershaw, 1955 = Zalipais inscriptum (family Turbinidae – Skeneinae)

- lata Marshall & Houart, 2011 = Pagodula lata (family Muricidae – Trophoninae)

- laterna Cotton, 1952 = Pisinna varicifera (family Anabathridae)

- laterna Lamarck, 1818 = Laternula laterna (family Laternulidae)

- latesulcata Tenison Woods, 1878 = Cuspidaria latesulcata (family Cuspidariidae)

- latistrigata Angas, 1865 = Patelloida latistrigata (family Lottiidae – Patelloidinae)

- lauretanae Tenison Woods, 1878 = Terebra lauretanae (family Terebridae – Terebrinae)

- lauta A. Adams, 1862 = Diala suturalis (family Dialidae)

- lawleyanum Crosse, 1863 = Batillariella estuarina (family Batillariidae)

- layardi Petterd, 1884 = Lironoba layardi (family Rissoidae – Rissoinae)

- lefroyi Beddome, 1882 = Propeleda ensicula (family Nuculanidae – Nuculaninae)

- legrandi Beddome, 1882 = Melanella legrandi (family Eulimidae)

- legrandi Beddome, 1883 = Asperdaphne legrandi (family Conidae – Rhaphitominae)

- legrandi Petterd, 1879 = Fossarina legrandi (family Trochidae – Trochinae)

- legrandi Tate, 1894 = Zeidora legrandi (family Fissurellidae – Emarginulinae)

- legrandi Tenison Woods, 1875 = Fusinus undulatus (family Fasciolariidae – Fusininae)

- legrandi Tenison Woods, 1876 = Calliostoma legrandi (family Calliostomatidae – Calliostomatinae)

- legrandi Tenison Woods, 1876 = Zafra legrandi (family Columbellidae – Atiliinae)

- legrandi Tenison Woods, 1878 = Austromitra analogica (family Costellariidae)

- lehmanni Menke, 1843 = Notogibbula lehmanni (family Trochidae – Trochinae)

- lehmanni Menke, 1843 = Prothalotia lehmanni (family Trochidae – Trochinae)

- leia Cotton, 1944 = Mesoginella turbinata (family Marginellidae – Marginellinae)

- lene Hedley, 1918 = Anabathron lene (family Anabathridae)

- lentiginosa Coen, 1949 = Notocypraea declivis (family Cypraeidae – Pustulariinae)

- lentiginosus Sowerby, 1840 = Ischnochiton lentiginosus (family Ischnochitonidae – Ischnochitoninae)

- lepida Hedley, 1906 = Borniola lepida (family Galeommatidae)

- leptodons Reid, 1991 = Rossia leptodons (family Sepiolidae – Rossiinae)

- leptosceles Watson, 1879) = Laevidentalium leptosceles (family Laevidentaliidae)

- lesueuri Fischer, 1877 = Prothalotia lehmanni (family Trochidae – Trochinae)

- lesueuri Iredale, 1929 = Sassia eburnea (family Ranellidae – Cymatiinae)

- letourneuxiana Crosse & Fischer, 1865 = Turrella letourneuxiana (family Conidae – Mangeliinae)

- leuca Miller, 1995 = Paradoris dubia (family Discodorididae)

- leucomphalus Verco, 1905 = Clanculus leucomphalus (family Trochidae – Trochinae)

- leucophaea Reeve, 1855 = Polinices sordida (family Naticidae – Naticinae)

- leucostigma Philippi, 1845 = Phasianotrochus eximius (family Trochidae – Trochinae)

- leucostoma Gaskoin, 1852 = Mitrella leucostoma (family Columbellidae – Atiliinae)

- leucostoma Mayblom, 1951 = Livonia mammilla (family Volutidae – Cymbiinae)

- leucozona A. Adams & Angas, 1864 = Belloliva leucozona (family Olivellidae)

- levidensis Kesteven, 1902 = Agnewia tritoniformis (family Muricidae – Rapaninae)

- levifida Iredale, 1929 = Penion mandarinus (family Buccinidae – Siphonaliinae)

- levis Hombron & Jacquinot, 1851 = Astele armillatum (family Calliostomatidae – Calliostomatinae)

- levis Verco, 1895 = Haustrum flindersi (family Muricidae – Haustrinae)

- licinus (Hedley and Petterd, 1906) = Emozamia licinus (family Muricidae – Coralliophilinae)

- limaeformis Cotton, 1930 = Condylocardia limaeformis (family Condylocardiidae – Condylocardiinae)

- limaeformis Reeve, 1858 = Vulsella spongiarum (family Malleidae)

- limbata Philippi, 1849 = Cellana solida (family Nacellidae)

- limbatus Quoy & Gaimard, 1834 = Clanculus limbatus (family Trochidae – Trochinae)

- limicola Reeve, 1860 = Laternula rostrata (family Laternulidae)

- lincolnensis Crosse & Fischer, 1865 = Microcolus dunkeri (family Fasciolariidae – Fasciolariinae)

- lincolnensis Reeve, 1859 = Mitrella lincolnensis (family Columbellidae – Atiliinae)

- lincolnensis Verco, 1907 = Thracia lincolnensis (family Thraciidae)

- lineare Reeve, 1847 = Cominella lineolata (family Buccinidae – Buccininae)

- lineata Angas, 1865 = Guraleus pictus (family Conidae – Mangeliinae)

- lineata Gray, 1825 = Bullina lineata (family Bullinidae)

- lineata Lamarck, 1822 = Phasianotrochus eximius (family Trochidae – Trochinae)

- lineata Petterd, 1884 = Alvania strangei (family Rissoidae – Rissoinae)

- lineata Sowerby, 1835 = Diodora lineata (family Fissurellidae – Emarginulinae)

- lineolaris Gould, 1861 = Leiopyrga lineolaris (family Trochidae – Umboniinae)

- lineolata Lamarck, 1809 = Cominella lineolata (family Buccinidae – Buccininae)

- lineolata Quoy & Gaimard, 1832 = Sepioloidea lineolata (family Sepiadariidae – Sepiolinae)

- lineolata Tryon, 1883 = Pseudamycla dermestoidea (family Columbellidae – Atiliinae)

- lineolatus Blainville, 1825 = Ischnochiton lineolatus (family Ischnochitonidae – Ischnochitoninae)

- lineum Hedley, 1907 = Amygdalum lineum (family Mytilidae)

- lingua-felis ex parte Reeve, 1858 = Vulsella spongiarum (family Malleidae)

- lintea Hedley & May, 1908 = Rissoina rhyllensis (family Rissoidae – Rissoininae)

- lipuros Scheltema, 1989 = Falcidens lipuros (family Chaetodermatidae)

- lirata Angas, 1880 = Rissoina nivea (family Rissoidae – Rissoininae)

- lirata Angas, 1880 = Rissoina nivea (family Rissoidae – Rissoininae)

- liratus H. Adams & Angas, 1864 = Leptochiton liratus (family Lepidopleuridae)

- lirella Reeve, 1853 = Nassarius pauperatus (family Nassariidae – Nassariinae)

- lischkeanus Dunker, 1882 = Babelomurex lischkeanus (family Muricidae – Coralliophilinae)

- lissum Suter, 1908 = Zalipais inscriptum (family Turbinidae – Skeneinae)

- littoralis Laseron, 1953 = Cuna concentrica (family Condylocardiidae – Cuninae)

- littoralis Laseron, 1954 = Liotella johnstoni (family Turbinidae – Skeneinae)

- littorinoides Tenison Woods, 1876 = Haustrum vinosum (family Muricidae – Haustrinae)

- livida Lamarck, 1818 = Gari livida (family Psammobiidae)

- livida Lamarck, 1818 = Soletellina biradiata (family Psammobiidae)

- lividum Philippi, 1846 = Bembicium melanostoma (family Littorinidae – Lacuninae)

- lividus Kiener, 1850 = Phasianotrochus eximius (family Trochidae – Trochinae)

- lobatus Carpenter, 1892 = Eudoxochiton inornata (family Ischnochitonidae – Callochitoninae)

- lodderae Hedley, 1903 = Eulima lodderae (family Eulimidae)

- lodderae May, 1911 = Dentimargo lodderae (family Marginellidae – Marginellinae)

- lodderae Petterd, 1884 = Lodderia lodderae (family Tornidae – Vitrinellinae)

- lodderae Petterd, 1884 = Scalenostoma lodderae (family Eulimidae)

- lodderae Tate & May, 1900 = Zeidora lodderae (family Fissurellidae – Emarginulinae)

- longicymba Blainville, 1825 = Stenochiton longicymba (family Ischnochitonidae – Ischnochitoninae)

- longifilis Mörch, 1862 = Serpulorbis sipho (family Vermetidae – Vermetinae)

- lorigera Steenstrup, 1875 = Lycoteuthis lorigera (family Lycoteuthidae)

- lubrica Gould, 1861 = Theora lubrica (family Semelidae)

- lubricatum Sowerby, 1869 = Laevidentalium lubricatum (family Laevidentaliidae)

- lucinalis Lamarck, 1818 = Petricola divergens (family Petricolidae)

- luminosa Sasaki, 1915 = Eucleoteuthis luminosa (family Ommastrephidae)

- lurida Hedley, 1907 = Anachis lurida (family Columbellidae – Atiliinae)

- lutea Lamarck, 1822 = Philippia lutea (family Architectonicidae – Architectonicinae)

- luteofuscus May, 1920 = Anabathron luteofuscus (family Anabathridae)

- luteus Quoy & Gaimard, 1834 = Bembicium melanostoma (family Littorinidae – Lacuninae)