abdiplex, Semeloidea abdiplex (Marwick, 1931) † (FOSSIL)
actinophora, Erycina actinophora (Dall, 1900) † (FOSSIL)
acupuncta, Melliteryx acupuncta (Hedley, 1902)
adamsi, Byssobornia adamsi (Yokoyama, 1924)
adansoni, Lasaea adansoni Dall, 1899
adansoni hinemoa, Lasaea adansoni hinemoa Finlay, 1928 - syn of: Lasaea hinemoa Finlay, 1928
adansoni rossiana, Lasaea adansoni rossiana Finlay, 1928 - syn of: Lasaea hinemoa Finlay, 1928
adansoni turtoni, Lasaea adansoni turtoni Bartsch, 1915 - syn of: Lasaea turtoni Bartsch, 1915
adansoniana, Poronia adansoniana Récluz, 1843 - syn of: Lasaea adansoni Dall, 1899
adansonii, Lasaea adansonii Cantraine, 1835 - syn of: Lasaea adansoni Dall, 1899
adansonii, Cycladina adansonii Cantraine, 1835 - syn of: Lasaea adansoni Dall, 1899
aequata, Aligena aequata Conrad, 1843 † (FOSSIL)
affinis, Erycina affinis Deshayes, 1858 † (FOSSIL)
agulhasensis, Rochefortia agulhasensis Jaeckel & Thiele, 1931
ambotruncata, Arthritica ambotruncata Laws, 1944 † (FOSSIL)
angulata, Melliteryx angulata Laws, 1936 † (FOSSIL)
aotea, Hemilepton aotea Maxwell, 1992 † (FOSSIL)
aradae, Erycina aradae Biondi-Giunti, 1859 - syn of: Abra prismatica (Montagu, 1808)
arcta, Erycina arcta Deshayes, 1858 † (FOSSIL)
arthuri, Waldo arthuri Valentich-Scott, Ó Foighil & Li, 2013
aturensis, Erycina aturensis Cossmann & Peyrot, 1911 † (FOSSIL)
auriculata, Myllita auriculata Smith, 1891
australis, Lasaea australis (Lamarck, 1818)
australis, Rochefortia australis (Vélain, 1877)
australis, Lepton australis Angas, 1878
australis, Erycina australis Deshayes, 1856
bakeri, Erycina bakeri Dall, 1916 - syn of: Neaeromya californica (Dall, 1899)
balaklavense, Macrodiceras balaklavense (Pcelincev, 1959) † (FOSSIL)
balliana, Erycina balliana Dall, 1916 - syn of: Lucinoma annulatum (Reeve, 1850)
bartrumi, Myllita bartrumi (Laws, 1940) † (FOSSIL)
bartrumi, Zemyllita bartrumi Laws, 1940 † - syn of: Myllita bartrumi (Laws, 1940) † (FOSSIL)
baudoni, Planikellya baudoni (Deshayes, 1858) † (FOSSIL)
benthicola, Myllita benthicola Cotton & Godfrey, 1938
beringensis, Rochefortia beringensis (Dall, 1916)
bernayi, Erycina bernayi Deshayes, 1858 † (FOSSIL)
bexhavenensis, Semeloidea bexhavenensis Saether, Sha Jingeng, Little & Campbell, 2016 † (FOSSIL)
bibsae, Cymatioa bibsae (Nowell-Usticke, 1969)
bidentata, Diarmaidia bidentata (Montague, 1803)
bidentifera, Borniola bidentifera (Powell, 1933)
bielzi, Erycina bielzi Brusina, 1865 - syn of: Abra tenuis (Montagu, 1803)
bifurca, Arthritica bifurca (Webster, 1908)
biocculta, Erycina biocculta de Folin, 1867 - syn of: Kellia suborbicularis (Montagu, 1803)
brevitas, Borniola brevitas (Laws, 1944) † (FOSSIL)
californica, Neaeromya californica (Dall, 1899)
californica, Orobitella californica Dall, 1899 - syn of: Neaeromya californica (Dall, 1899)
calva, Myllita calva Laseron, 1956
calvertensis, Erycina calvertensis Glenn, 1904 † (FOSSIL)
cancellata, Eupoleme cancellata Leach, 1852 - syn of: Lepton squamosum (Montague, 1803)
capensis, Melliteryx capensis (Sowerby, 1889)
cardioides, Erycina cardioides Lamarck, 1818 - syn of: Chioneryx cardioides (Lamarck, 1818)
carolinensis, Erycina carolinensis Dall, 1900 † (FOSSIL)
carriei, Borniola carriei (Lamy, 1911)
catalaunensis, Erycina catalaunensis Cossmann, 1883 † (FOSSIL)
catalinae, Erycina catalinae Dall, 1916 - syn of: Lasaea adansoni Dall, 1899
cema, Ceratobornia cema Narchi, 1966
cerritensis, Aligena cerritensis Arnold, 1903 - syn of: Aligena trigonalis (Carpenter, 1857)
chacei, Orobitella chacei (Dall, 1916)
chiclaya, Ceratobornia chiclaya (Olsson, 1961)
cistula, Lasaea cistula Keen, 1938 - syn of: Lasaea adansoni Dall, 1899
cistula, Lasaea cistula Keen, 1938 - syn of: Lasaea adansoni Dall, 1899
coani, Rochefortia coani Valentich-Scott, 1998
cokeri, Aligena cokeri Dall, 1909
colmani, Lasaea colmani Ó Foighil & Thiriot-Quiévreux, 1999
colpoica, Amerycina colpoica (Dall, 1913)
colpoica, Erycina colpoica Dall, 1913 - syn of: Amerycina colpoica (Dall, 1913)
compacta, Rochefortia compacta (Gould, 1861)
complanata, Erycina complanata Sowerby, 1822 - syn of: Atactodea erycinaea (Lamarck, 1818)
compressa, Neaeromya compressa (Dall, 1899)
compressa, Squillaconcha compressa (Dall, 1899)
compressa, Rochefortia compressa Dall, 1913 - syn of: Kurtiella compressa (Dall, 1913)
concentricum, Lepton concentricum (Gould, 1861)
consanguinea, Lasaea consanguinea (Smith, 1879)
convexum, Lepton convexum Clark, 1852 - syn of: Hemilepton nitidum (Turton, 1822)
cooki, Cymatioa cooki (Willet, 1937) † (FOSSIL)
coronata, Erycina coronata Dall, 1916 - syn of: Neaeromya californica (Dall, 1899)
costulatum, Lepton costulatum Von Martens, 1885 - syn of: Waldo parasiticus (Dall, 1876)
crassa, Aligena crassa (Kautsky, 1940) † (FOSSIL)
crassidens, Lasaea undulata crassidens Deshayes (FOSSIL)
crassiformis, Arthritica crassiformis Powell, 1933
crassitesta, Arthritica crassitesta Laws, 1950 † (FOSSIL)
crenulata, Erycina crenulata Scacchi, 1836 - syn of: Bornia sebetia (Costa, 1830)
cuenoti, Erycina cuenoti Lamy, 1908 - syn of: Litigiella glabra (Fischer, 1873)
cultrata, Amerycina cultrata Keen, 1971
cumingii, Pythina cumingii Adams, 1856 - syn of: Barrimysia cumingii (Adams, 1856)
cuneata, Pythinella cuneata (Verrill & Bush, 1898)
cuneata, Pythinella cuneata Monterosato, 1878 - syn of: Montacuta voeringi Friele, 1877
curryi, Semeloidea curryi Jeffery & Tracey, 1997 † (FOSSIL)
curta, Erycina curta Koenen † (FOSSIL)
dawsoni, Boreacola dawsoni Jeffreys, 1864 - syn of: Altenaeum dawsoni (Jeffreys, 1864)
decapitata, Borniola decapitata (Powell, 1939)
defrancei, Erycina defrancei Recluz, 1844 † (FOSSIL)
degrangei, Scacchia degrangei (Cossmann & Peyrot, 1911) † (FOSSIL)
deltoideum, Lepton deltoideum Wood, 1840 † - syn of: Bornia deltoidea Wood, 1840 † (FOSSIL)
denticulata, Erycina denticulata Deshayes, 1856 - syn of: Lionelita denticulata (Deshayes, 1856)
depressa, Erycina depressa Nyst, 1836 † (FOSSIL)
deshayesiana, Pythina deshayesiana (Hinds, 1845)
deshayesii, Myllita deshayesii D'Orbigny & Récluz, 1850
diegoana, Aligena diegoana Hertlein & Grant, 1972
digitatus, Waldo digitatus Zelaya & Ituarte, 2013
dingleyi, Lasaea dingleyi Laws, 1950 † (FOSSIL)
dispar, Arthritica dispar Laws, 1940 † (FOSSIL)
distorta, Lozouetia distorta Cosel, 1995
divae, Mancikellia divae (Van Aartsen & Carrozza, 1997)
donaciformis, Semeloidea donaciformis Bartrum & Powell, 1928 † (FOSSIL)
dubia, Cymatioa dubia (Deshayes, 1856)
dubia, Erycina dubia Deshayes, 1856 - syn of: Scintilla dubia (Deshayes, 1856)
eastera, Lasaea eastera Raines & Huber, 2012
effosa, Melliteryx effosa (Hutton, 1885) † (FOSSIL)
egretta, Diarmaidia egretta (Olsson, 1961)
electilis, Cymatioa electilis (Berry, 1963)
elevata, Aligena elevata (Stimpson, 1851)
elliptica, Scacchia elliptica Scacchi, 1833 - syn of: Scacchia oblonga (Philippi, 1836)
ellipticum, Lepton ellipticum Carpenter, 1857 - syn of: Kurtiella elliptica (Carpenter, 1857)
elongata, Arthritica elongata Laws, 1936 † (FOSSIL)
emmonsi, Erycina emmonsi Dall, 1899
eocaenica, Pythina eocaenica Raincourt, 1884 † (FOSSIL)
exserta, Scacchia exserta Linden, 1996
fabagella, Lepton fabagella Conrad, 1832 - syn of: Kellia suborbicularis (Montagu, 1803)
fabulina, Erycina fabulina Dall, 1900 † (FOSSIL)
fernandina, Erycina fernandina Dall, 1899
ferruginosa, Rochefortia ferruginosa Dall, 1916 - syn of: Kurtiella tumida (Carpenter, 1864)
filicaticola, Pythinella filicaticola (Olsson, 1914) † (FOSSIL)
filosa, Byssobornia filosa (Hedley, 1902)
finlayi, Arthritica finlayi Laws, 1950 † (FOSSIL)
finlayi, Myllita finlayi Marwick, 1924 † (FOSSIL)
floridana, Orobitella floridana (Dall, 1899)
floridana, Neaeromya floridana Dall, 1899 - syn of: Orobitella floridana (Dall, 1899)
floridana, Erycina floridana Vanatta, 1904
fluctusculpturata, Temblornia fluctusculpturata (Maury, 1910) † (FOSSIL)
fontenayi, Erycina fontenayi Mittre, 1841 - syn of: Lasaea adansoni Dall, 1899
fortidentata, Melliteryx fortidentata (Smith, 1904)
foucardi, Erycina foucardi Deshayes, 1858 † (FOSSIL)
fragilis, Myllita fragilis (Laws, 1936) † (FOSSIL)
franciscana, Erycina franciscana Récluz, 1845 - syn of: Tellimya ferruginosa (Montague, 1808)
frenchiensis, Lepton frenchiensis Gatliff & Gabriel, 1916
furtiva, Melliteryx furtiva Laws, 1950 † (FOSSIL)
gemmata, Myllita gemmata Tate, 1879
geoffroyi, Semeloidea geoffroyi Payraudeau, 1826 - syn of: Bornia geoffroyi (Payraudeau, 1826)
glabrum, Lepton glabrum Fischer, 1873 - syn of: Litigiella glabra (Fischer, 1873)
golischi, Rochefortia golischi Dall, 1916 - syn of: Kurtiella pedroana (Dall, 1899)
grebnitzskii, Rochefortia grebnitzskii Dall, 1916 - syn of: Kellia suborbicularis (Montagu, 1803)
grippi, Rochefortia grippi Dall, 1912
hawaiiensis, Lasaea hawaiiensis Dall, Bartsch & Rehder, 1938
helenae, Lasaea helenae Soot-Ryen, 1959 - syn of: Lasaea petitiana (Récluz, 1843)
helmsi, Arthritica helmsi (Hedley, 1915)
hindmarshensis, Myllita hindmarshensis Ludbrook, 1955 † (FOSSIL)
hinemoa, Lasaea hinemoa Finlay, 1928
huberi, Amerycina huberi Valentich-Scott, 2012
hulmei, Arthritica hulmei Ponder, 1965
io, Rochefortia io Bartsch, 1915 - syn of: Benthocardiella io (Bartsch, 1915)
irradiata, Erycina irradiata Cossmann, 1892 † (FOSSIL)
irregularis, Erycina irregularis Recluz, 1844 † (FOSSIL)
jaeckeli, Melliteryx jaeckeli Huber, 2015
japonica, Lasaea japonica Keen, 1938 - syn of: Lasaea undulata (Gould, 1861)
japonica, Arthritica japonica Lützen & Takahashi, 2003
jingchunae, Diarmaidia jingchunae Coan & Valentich-Scott, 2012
jipijapa, Neaeromya jipijapa (Olsson, 1961)
johnjagti, Erycina johnjagti Marquet, Lenaerts & Laporte, 2012 † (FOSSIL)
jozinae, Aligena jozinae Van Aartsen & Carrozza, 1997 - syn of: Kelliopsis jozinae Van Aartsen & Carrozza, 1998
jozinae, Kelliopsis jozinae Van Aartsen & Carrozza, 1998
kaawaensis, Borniola kaawaensis Bartrum & Powell, 1928 † (FOSSIL)
kozlowskii, Macrodiceras kozlowskii Karczewski, 1969 † (FOSSIL)
lacerum, Lepton lacerum Jeffreys, 1873
lamarckiana, Erycina lamarckiana Recluz, 1844 † (FOSSIL)
latens, Erycina latens Deshayes, 1858 † (FOSSIL)
laterodentata, Aligena laterodentata Harry, Britton & Nunley, 1980
lediforme, Lepton lediforme Olsson, 1961 - syn of: Kurtiella lediforme (Olsson, 1961)
lepida, Borniola lepida (Hedley, 1906)
lepidoformis, Lepton lepidoformis Olsson, 1961 - syn of: Tryphomyax lepidoformis (Olsson, 1961)
lepidum, Lepton lepidum Say, 1826
lepisma, Lepton lepisma Monterosato, 1878 - syn of: Vasconiella jeffreysiana (Fischer, 1873)
liancurtensis, Erycina liancurtensis Cossmann, 1896 † (FOSSIL)
limpida, Orobitella limpida (Dall, 1899)
linella, Erycina linella Dall, 1899
longicallis, Erycina longicallis Philippi, 1844 - syn of: Abra longicallus (Scacchi, 1835)
longidentata, Erycina longidentata Deshayes, 1858 † (FOSSIL)
longifossulum, Hemilepton longifossulum (Cossmann, 1896) † (FOSSIL)
longipes, Ceratobornia longipes (Stimpson, 1855)
longipes, Lepton longipes Stimpson, 1855 - syn of: Ceratobornia longipes (Stimpson, 1855)
longum, Macrodiceras longum Karczewski, 1969 † (FOSSIL)
mactroides, Melliteryx mactroides (Hanley, 1857)
mactroides, Pythina mactroides Hanley, 1857 - syn of: Melliteryx mactroides (Hanley, 1857)
magnum, Macrodiceras magnum Karczewski, 1969 † (FOSSIL)
maltzani, Boreacola maltzani (Verkrüzen, 1875)
maoria, Lasaea maoria (Powell, 1933)
margarita, Neaeromya margarita (Olsson, 1961)
mariana, Properycina mariana Cerulli-Irelli, 1908 † (FOSSIL)
marylandica, Erycina marylandica Glenn, 1904 † (FOSSIL)
matsumotoi, Paraborniola matsumotoi Habe, 1958
maura, Scacchia maura Linden, 1996
meroeum, Lepton meroeum Carpenter, 1864 - syn of: Kellia suborbicularis (Montagu, 1803)
mikkelsenae, Amerycina mikkelsenae Valentich-Scott, 2012
milda, Rochefortia milda Bartsch, 1915 - syn of: Neolepton atlanticum (Smith, 1890)
miliaris, Lasaea miliaris Philippi, 1845
minoensis, Squillaconcha minoensis (Itoigawa, 1960) † (FOSSIL)
miocenica, Semeloidea miocenica Laws, 1932 † (FOSSIL)
mirifica, Melliteryx mirifica Powell & Bartrum, 1929 † (FOSSIL)
molinae, Rochefortia molinae Ramorino, 1968 - syn of: Mysella molinae (Ramorino, 1968)
moloti, Aligena moloti Staadt, 1904 † (FOSSIL)
mortoni, Rochefortia mortoni Valentich-Scott, 1998
muris, Aligena muris (Rosewater, 1984)
myaciformis, Neaeromya myaciformis Dall, 1916
nassauensis, Planikellya nassauensis Marquet, Lenaerts & Laporte, 2012 † (FOSSIL)
neozelanica, Borniola neozelanica Powell, 1937
neozelanicum, Lepton neozelanicum Laws, 1950 † (FOSSIL)
nipponensis, Erycina nipponensis Nomura & Hatai, 1940
nipponica, Lasaea nipponica (Linnaeus, 1758)
nitida, Hemilepton nitida Turton, 1822 - syn of: Hemilepton nitidum (Turton, 1822)
nitidissima, Erycina nitidissima Deshayes, 1857 † (FOSSIL)
nitidum, Hemilepton nitidum (Turton, 1822)
nitidum laevis, Lepton nitidum laevis Jeffreys, 1864 - syn of: Hemilepton nitidum (Turton, 1822)
nitidum lineolata, Lepton nitidum lineolata Jeffreys, 1864 - syn of: Hemilepton nitidum (Turton, 1822)
nitidum pisidialis, Lepton nitidum pisidialis Jeffreys, 1864 - syn of: Hemilepton nitidum (Turton, 1822)
nucea, Aligena nucea Dall, 1913
nucleola, Erycina nucleola Récluz, 1843 - syn of: Kurtiella bidentata (Montagu, 1803)
obliqua, Neaeromya obliqua (Harry, 1969)
oblonga, Orobitella oblonga (Carpenter, 1857)
oblonga, Scacchia oblonga (Philippi, 1836)
oblonga, Lasaea oblonga Carpenter, 1857 - syn of: Aligena trigonalis (Carpenter, 1857)
oblongus, Pristes oblongus Carpenter, 1864
obsoleta, Erycina obsoleta Deshayes, 1858 † (FOSSIL)
occidentalis, Pythinella occidentalis (Smith, 1885)
orbicularis, Aligena orbicularis (Wood, 1840) † (FOSSIL)
orientale, Lepton orientale (Melvill, 1910)
ovalis, Hitia ovalis Dall, Bartsch & Rehder, 1938
ovata, Erycina ovata Philippi, 1836 - syn of: Abra segmentum (Récluz, 1843)
ovata, Scacchia ovata Philippi, 1844
ovatum, Lepton ovatum Tate, 1886 - syn of: Montacuta meridionalis Tate, 1887
palliopapillata, Parabornia palliopapillata Simone, 2001
papyracea, Erycina papyracea Deshayes, 1856 - syn of: Scintillona papyracea (Deshayes, 1856)
parasiticus, Waldo parasiticus (Dall, 1876)
parengaensis, Lasaea parengaensis Powell, 1935
parrussetensis, Mancikellia parrussetensis (Giribet & Peñas, 1999)
parva, Melliteryx parva (Deshayes, 1856)
parvula, Erycina parvula Deshayes, 1858 † (FOSSIL)
pasca, Borniola pasca Raines & Huber, 2012
paucitentaculatus, Waldo paucitentaculatus Zelaya & Ituarte, 2013
paula, Pythina paula Adams, 1856 - syn of: Curvemysella paula (Adams, 1856)
pcelincevi, Macrodiceras pcelincevi Karczewski, 1969 † (FOSSIL)
peculiaris, Pythina peculiaris Adams, 1856 - syn of: Curvemysella paula (Adams, 1856)
pellucida, Erycina pellucida Lamarck, 1805 † (FOSSIL)
perfragilis, Arthritica perfragilis Laws, 1950 † (FOSSIL)
periscopiana, Erycina periscopiana Dall, 1899
peruviana, Aligena peruviana (Olsson, 1961)
peruviana, Orobitella peruviana Olsson, 1961 - syn of: Aligena peruviana (Olsson, 1961)
petitiana, Lasaea petitiana (Récluz, 1843)
philippinensis, Salpocola philippinensis (Habe & Kanazawa, 1981)
pinguis, Myllitella vivens pinguis Marwick
pisum, Erycina pisum Scacchi, 1836 - syn of: Kellia suborbicularis (Montagu, 1803)
plenilunium, Scacchia plenilunium Melvill & Standen, 1907 - syn of: Pisidium plenilunium (Melvill & Standen, 1907)
polita, Myllita polita May, 1924
polonicum, Macrodiceras polonicum Karczewski, 1969 † (FOSSIL)
powelli, Borniola powelli (Crozier, 1966)
praecursor, Myllita praecursor (Laws, 1940) † (FOSSIL)
prismatica, Semierycina prismatica (Monterosato, 1878)
prismatica, Erycina prismatica Cossmann & Peyrot, 1912 - syn of: Hemilepton nitidum (Turton, 1822)
profunda, Borniola profunda (Dell, 1952)
proxima, Erycina proxima de Folin, 1867 - syn of: Kellia suborbicularis (Montagu, 1803)
pruna, Erycina pruna Glenn, 1904 † (FOSSIL)
pulchra, Cymatioa pulchra (Philippi, 1849)
pumila, Mancikellia pumila Wood, 1848 - syn of: Mancikellia divae (Van Aartsen & Carrozza, 1997)
puncticulata, Melliteryx puncticulata (Yokoyama, 1924) † (FOSSIL)
puncticulatus flexussa, Melliteryx puncticulatus flexussa Habe, 1960 - syn of: Melliteryx puncticulata (Yokoyama, 1924) †
pusilla, Erycina pusilla Philippi, 1836 - syn of: Ervilia castanea (Montagu, 1803)
pustulosa, Aligena pustulosa Dall, 1898 † (FOSSIL)
quadrata, Borniola quadrata (Dell, 1956)
quadrata, Neaeromya quadrata Gabb, 1873
radiata, Borniola radiata (Hedley, 1905)
radiatula, Erycina radiatula Deshayes, 1858 † (FOSSIL)
radiolata, Planikellya radiolata (Lamarck, 1806) † (FOSSIL)
regifica, Erycina regifica Olsson, 1914 † (FOSSIL)
reikoae, Lasaea reikoae Suzuki & Kosuge, 2010
renieri, Erycina renieri Philippi, 1836 - syn of: Abra alba (Wood, 1802)
reniformis, Borniola reniformis (Suter, 1908)
reniformis, Rochefortia reniformis Suter, 1908 - syn of: Borniola reniformis (Suter, 1908)
retifera, Rhamphidonta retifera (Dall, 1899)
rickardia, Erycina rickardia Glenn, 1904 † (FOSSIL)
rodriguensis, Scacchia rodriguensis (Oliver & Holmes, 2004)
rodriguesensis, Scacchia rodriguesensis Oliver & Holmes, 2004
rubra, Lasaea rubra Montagu, 1803 - syn of: Lasaea adansoni Dall, 1899
rubra major, Lasaea rubra major Bucquoy, Dautzenberg & Dollfus, 1892 - syn of: Lasaea adansoni Dall, 1899
rubra pallida, Lasaea rubra pallida Jeffreys, 1864 - syn of: Lasaea adansoni Dall, 1899
rubra subviridis, Lasaea rubra subviridis Stearns, 1894 - syn of: Lasaea adansoni Dall, 1899
rugata, Platomysia rugata Habe, 1951
rugifera, Neaeromya rugifera (Carpenter, 1864)
rugosa, Platomysia rugosa Habe, 1951 - syn of: Platomysia rugata Habe, 1951
sagamiensis, Squillaconcha sagamiensis (Habe, 1961)
sagamiensis, Boreacola sagamiensis Kuroda & Habe, 1971 - syn of: Callomysia sagamiensis (Kuroda & Habe, 1971)
santarosae, Erycina santarosae Dall, 1916 - syn of: Kellia suborbicularis (Montagu, 1803)
sechura, Aligena sechura (Olsson, 1961)
semele, Rochefortia semele Dall, 1924 - syn of: Rochefortina sandwichensis (Smith, 1885)
semen, Arthritica semen (Menke, 1843)
semipecten, Erycinopsis semipecten (Cossmann) † (FOSSIL)
setoutiana, Erycina setoutiana Taki & Sato, 1938
sibogae, Melliteryx sibogae Prashad, 1932
singularis, Isorobitella singularis Keen, 1962 - syn of: Aligena trigonalis (Carpenter, 1857)
singularis, Orobitella singularis Keen, 1962 - syn of: Aligena trigonalis (Carpenter, 1857)
solenoides, Erycina solenoides King, 1832 - syn of: Darina solenoides (King & Broderip, 1832)
solida, Orobitella solida Cosel, 1995
solidula, Semeloidea solidula (Deshayes, 1858) † (FOSSIL)
solidulum, Lepton solidulum Schilder & Schilder, 1938
souverbiana, Lasaea souverbiana Huber, 2015
speciosa, Erycina speciosa Glenn, 1904 † (FOSSIL)
spirale, Macrodiceras spirale Karczewski, 1969 † (FOSSIL)
squamosum, Lepton squamosum (Montague, 1803)
squillina, Parabornia squillina (Boss, 1965)
stearnsi, Neaeromya stearnsi Dall, 1899
stowei, Myllita stowei (Hutton, 1873)
striata, Aligena striata Lea, 1843 † (FOSSIL)
striata, Lasaea striata Tokunaga, 1906 - syn of: Chavania striata (Tokunaga, 1906)
striatissima, Erycina striatissima Cerulli-Irelli, 1908 † (FOSSIL)
subangulata, Erycina subangulata Gray, 1825 - syn of: Paphies subtriangulata (Wood, 1828)
sublaevis, Pythinella sublaevis (Carpenter, 1857) - syn of: Kurtiella sublaevis (Carpenter, 1857)
subquadrata, Neaeromya subquadrata (Gabb, 1872)
subradiata, Erycina subradiata (Gould, 1861)
subsinuata, Squillaconcha subsinuata (Lischke, 1871)
subtrigonum, Lepton subtrigonum Fischer, 1875 - syn of: Lepton subtrigonum Jeffreys, 1873
subtrigonum, Lepton subtrigonum Jeffreys, 1873
subviridis, Lasaea subviridis Dall, 1899 - syn of: Lasaea adansoni Dall, 1899
sykesi, Arculus sykesi (Chaster, 1895)
sykesii, Arculus sykesii Chaster, 1895 - syn of: Arculus sykesi (Chaster, 1895)
symmetrica, Planikellya symmetrica (Deshayes, 1858) † (FOSSIL)
taieriensis, Borniola taieriensis (Powell, 1939)
tasmanica, Myllita tasmanica (Tenison-Woods, 1875)
tasmanica, Anapa tasmanica Tenison-Woods, 1876 - syn of: Atactodea cuneata (Lamarck, 1818)
tenera, Scacchia tenera Jeffreys, 1881
texasiana, Aligena texasiana Harry, 1969
texta, Planikellya texta (Cossmann, 1887) † (FOSSIL)
translucida, Planikellya translucida (Lamarck, 1807) † (FOSSIL)
transversarium, Lepton transversarium Cossmann, 1896 † (FOSSIL)
trapezialis, Waldo trapezialis Zelaya & Ituarte, 2002
triangulata, Temblornia triangulata (Anderson & Martin, 1914) † (FOSSIL)
trigona, Erycina trigona Brusina, 1865 - syn of: Abra tenuis (Montagu, 1803)
trigonale, Lepton trigonale Tate, 1879
trigonalis, Aligena trigonalis (Carpenter, 1857)
trigonalis, Lasaea trigonalis Carpenter, 1857 - syn of: Aligena trigonalis (Carpenter, 1857)
trigonalis, Orobitella trigonalis Carpenter, 1857 - syn of: Aligena trigonalis (Carpenter, 1857)
trigonalis, Isorobitella trigonalis Carpenter, 1857 - syn of: Aligena trigonalis (Carpenter, 1857)
trigonum, Lepton trigonum de Folin, 1877 - syn of: Lepton subtrigonum Jeffreys, 1873
tumbesiana, Diplodontina tumbesiana (Stempell, 1899)
tumida, Erycina tumida Brusina, 1865 - syn of: Abra alba (Wood, 1802)
tumida, Rochefortia tumida Carpenter, 1864 - syn of: Kurtiella tumida (Carpenter, 1864)
turbacoensis, Erycina turbacoensis Anderson, 1929 - syn of: Semele laevis (Sowerby, 1833)
turtoni, Lasaea turtoni Bartsch, 1915
undulata, Lasaea undulata (Gould, 1861)
undulata, Planikellya undulata (Lamarck, 1806) † (FOSSIL)
undulata crassidens, Lasaea undulata crassidens Deshayes, 1858 † (FOSSIL)
uvasana, Semeloidea uvasana (Dickerson, 1915) † (FOSSIL)
vadosa, Boreacola vadosa Bernard, 1979 - syn of: Boreacola maltzani (Verkrüzen, 1875)
veneris, Erycina veneris Vélain, 1877 - syn of: Neolepton veneris (Vélain, 1877)
vesicularis, Erycina vesicularis Recluz, 1844 † (FOSSIL)
viastellata, Rochefortia viastellata Hedley, 1909 - syn of: Fastimysia viastellata (Hedley, 1909)
violacea, Erycina violacea Scacchi, 1836 - syn of: Lasaea adansoni Dall, 1899
virgata, Temblornia virgata (Gardner, 1942) † (FOSSIL)
vivens, Myllitella vivens Finlay, 1926
vivens pinguis, Myllitella vivens pinguis Marwick, 1928
yamakawai, Byssobornia yamakawai (Yokoyama, 1922)
zorni, Scacchia zorni Van Aartsen & Fehr-de Wal, 1985
zorrita, Neaeromya zorrita (Olsson, 1961)
zorritensis, Diarmaidia zorritensis (Olsson, 1961)
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