Subgenus (Lyonsia) W. H. Turton, 1822

(3-2-3-1-3-3-0-13-3-0-0-0-0)
Ref. Bernard, 1979 p 58
Bernard, 1983 p 63

arenosa (H. P. C. Moller, 1842)
(3-2-3-1-3-3-0-13-3-1-0-0-0)
Sand Lyonsia, Sanded Lyonsia, Sandy Lyonsia
Size 0.5"-0.75" long
Ref. Amer. Fish. Soc., 1988 p 47
Bernard, 1979 p 58
Morris, 1966 p 46 bw
Morris, 1973 p 97 bw
Syn. Lyonsia (Lyonsia) gibbosa A. Hancock, 1846;
Lyonsia (Lyonsia) sibirica J. W. Leche, 1883
Ref. Abbott, 1974 p 555
Syn. Lyonsia (Lyonsia) arenosa sibirica J. W. Leche, 1883;
Lyonsia (Lyonsia) gibbosa A. Hancock, 1846 [not A. d'Orbigny, 1850];
Lyonsia (Lyonsia) ventricosa A. A. Gould, 1861;
Lyonsia (Pandorina) flabellata A. A. Gould, 1861;
Osteodesma aeruginosa J. W. Mighels, 1844;
Pandorina arenosa H. P. C. Moller, 1842;
Pandorina becki J. W. Leche, 1878
Ref. Bernard, 1983 p 63
Syn. Lyonsia (Lyonsia) arenosa siberica J. W. Leche, 1883;
Lyonsia (Lyonsia) gibbosa A. Hancock, 1846;
Lyonsia (Lyonsia) ventricosa A. A. Gould, 1861;
Lyonsia (Pandorina) flabellata A. A. Gould, 1861;
Pandora arenosa H. P. C. Moller, 1842
Ref. Wagner, 1984 p 73 bw

siberica J. W. Leche, 1883
(3-2-3-1-3-3-0-13-3-1-1-0-0)
[=Lyonsia (Lyonsia) arenosa (H. P. C. Moller, 1842)]
Ref. Bernard, 1983 p 63
Wagner, 1984 p 73

bracteata (A. A. Gould, 1850)
(3-2-3-1-3-3-0-13-3-2-0-0-0)
Scaly Lyonsia
Ref. Amer. Fish. Soc., 1988 p 47
Syn. Lyonsia (Lyonsia) pugetensis W. H. Dall, 1913;
Mya striata authors [not G. Montagu, 1815];
Osteodesma bracteata A. A. Gould, 1850
Ref. Bernard, 1983 p 63

braziliensis A. A. Gould, 1850
(3-2-3-1-3-3-0-13-3-3-0-0-0)
[=Lyonsia (Philippina) beana (A. d'Orbigny, 1842)]
Ref. Abbott, 1974 p 555

bulla W. H. Dall, 1881
(3-2-3-1-3-3-0-13-3-4-0-0-0)
Ref. Abbott, 1974 p 555

californica authors, not T. A. Conrad, 1837
(3-2-3-1-3-3-0-13-3-5-0-0-0)
[=Lyonsia (Lyonsia) nesiotes W. H. Dall, 1915]
Ref. Bernard, 1983 p 64

californica T. A. Conrad, 1837
(3-2-3-1-3-3-0-13-3-6-0-0-0)
California Lyonsia
Size 1" long
Ref. Amer. Fish. Soc., 1988 p 47
Morris, 1966 p 46 bw
Syn. Lyonsia (Lyonsia) haroldi W. H. Dall, 1915;
Lyonsia (Lyonsia) nesiotes W. H. Dall, 1915;
Lyonsia (Lyonsia) pugetensis W. H. Dall, 1913
Ref. Abbott, 1974 p 555
Syn. Lyonsia (Lyonsia) californica haroldi W. H. Dall, 1915;
Lyonsia (Lyonsia) gouldii W. H. Dall, 1915;
Lyonsia (Lyonsia) hyalina authors [not T. A. Conrad, 1831];
Mya striata authors [not G. Montagu, 1815];
Osteodesma nitidum A. A. Gould, 1853 [not Mya nitida O. Fabricius, 1798]
Ref. Bernard, 1983 p 63

haroldi W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-6-1-0-0)
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837]
Ref. Bernard, 1983 p 63

nesiotes W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-6-2-0-0)
[=Lyonsia (Lyonsia) nesiotes W. H. Dall, 1915]
Ref. Bernard, 1983 p 64

coruscans A. Scacchi, 1833
(3-2-3-1-3-3-0-13-3-7-0-0-0)
[=Lyonsia (Lyonsia) striata G. Montagu, 1815]
Ref. Abbott, 1974 p 555

delicata L. Marincovich, 1973
(3-2-3-1-3-3-0-13-3-8-0-0-0)
Ref. Bernard, 1983 p 63

diaphana P. P. Carpenter, 1856
(3-2-3-1-3-3-0-13-3-9-0-0-0)
[=Entodesma (Entodesma) pictum (G. B. Sowerby, 1834)]
Ref. Bernard, 1983 p 63
[=Entodesma inflatum (T. A. Conrad, 1837)]
Ref. Keen, 1971 p 291

elegantula T. Soot-Ryen, 1957
(3-2-3-1-3-3-0-13-3-10-0-0-0)
Ref. Bernard, 1983 p 63

floridana T. A. Conrad, 1849
(3-2-3-1-3-3-0-13-3-11-0-0-0)
Florida Lyonsia
Ref. Amer. Fish. Soc., 1988 p 47
Morris, 1973 p 98 bw
[see also as Subgenus under Genus hyalina]

fretalis W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-12-0-0-0)
Ref. Bernard, 1983 p 64

gibbosa A. Hancock, 1846 [not A. d'Orbigny, 1850]
(3-2-3-1-3-3-0-13-3-13-0-0-0)
[=Lyonsia (Lyonsia) arenosa (H. P. C. Moller, 1842)]
Ref. Abbott, 1974 p 555
Bernard, 1983 p 63
Wagner, 1984 p 73

gouldii W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-14-0-0-0)
Gould Lyonsia
Size 0.75" long
Ref. Abbott, 1974 p 555
Amer. Fish. Soc., 1988 p 47
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837
Ref. Bernard, 1983 p 63
Syn. Osteodesma nitidum A. A. Gould, 1853 [not O. Fabricius, 1798]
Ref. Keen, 1971 p 291 bw

granulifera A. E. Verrill & K. J. Bush, 1898
(3-2-3-1-3-3-0-13-3-15-0-0-0)
Granulate Lyonsia
Ref. Abbott, 1974 p 555 d
Amer. Fish. Soc., 1988 p 47

haroldi W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-16-0-0-0)
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837]
Ref. Abbott, 1974 p 555

hyalina authors, not T. A. Conrad, 1831
(3-2-3-1-3-3-0-13-3-17-0-0-0)
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837]
Ref. Bernard, 1983 p 63

hyalina (T. A. Conrad, 1831)
(3-2-3-1-3-3-0-13-3-18-0-0-0)
Glassy Lyonsia
Size 0.5"-0.75" long
Ref. Abbott, 1974 p 554 bw
Amer. Fish. Soc., 1988 p 47
Morris, 1973 p 98 bw
Syn. Mya hyalina T. A. Conrad, 1831
Ref. Wagner, 1984 p 73 bw

floridana T. A. Conrad, 1849
(3-2-3-1-3-3-0-13-3-18-1-0-0)
Ref. Abbott, 1974 p 555
[see also as a Genus]

hyalina T. A. Conrad, 1831
(3-2-3-1-3-3-0-13-3-18-2-0-0)
Ref. Abbott, 1974 p 554

inflata T. A. Conrad, 1837
(3-2-3-1-3-3-0-13-3-19-0-0-0)
[=Entodesma (Agriodesma) pictum (G. B. Sowerby, 1834)]
Ref. Abbott, 1974 p 556
[=Entodesma (Entodesma) pictum (G. B. Sowerby, 1834)]
Ref. Bernard, 1983 p 63

magnifica W. H. Dall, 1913
(3-2-3-1-3-3-0-13-3-20-0-0-0)
Ref. Abbott, 1974 p 555 d

major S. Locard
(3-2-3-1-3-3-0-13-3-21-0-0-0)
[=Lyonsia (Allogramma) formosa J. G. Jeffreys, 1881]
Ref. Abbott, 1974 p 555

montagui T. Brown, 1845
(3-2-3-1-3-3-0-13-3-22-0-0-0)
[=Lyonsia (Lyonsia) striata G. Montagu, 1815]
Ref. Abbott, 1974 p 555

navicuch authors [not A. Adams & L. A. Reeve, 1850]
(3-2-3-1-3-3-0-13-3-23-0-0-0)
[=Entodesma (Entodesma) cuneatum (J. E. Gray, 1828)]
Ref. Bernard, 1983 p 63

nesiotes W. H. Dall, 1915
(3-2-3-1-3-3-0-13-3-24-0-0-0)
Island Lyonsia
Ref. Amer. Fish. Soc., 1988 p 47
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837]
Ref. Abbott, 1974 p 555
Syn. Lyonsia (Lyonsia) californica authors [not T. A. Conrad, 1837];
Lyonsia (Lyonsia) californica nesiotes W. H. Dall, 1915
Ref. Bernard, 1983 p 64

norwegica (J. F. Gmelin, 1791) [T]
(3-2-3-1-3-3-0-13-3-25-0-0-0)
Ref. Abbott, 1974 p 554
Syn. Mya norwegica J. F. Gmelin, 1791
Ref. Bernard, 1979 p 58

d'Orbignyi P. Fischer, 1857
(3-2-3-1-3-3-0-13-3-26-0-0-0)
[=Lyonsia (Philippina) beana (A. d'Orbigny, 1842)]
Ref. Abbott, 1974 p 555

panamensis W. H. Dall, 1908
(3-2-3-1-3-3-0-13-3-27-0-0-0)
Ref. Bernard, 1983 p 64
Keen, 1971 p 291 d

picta [pictum] G. B. Sowerby, 1834
(3-2-3-1-3-3-0-13-3-28-0-0-0)
[=Entodesma (Entodesma) pictum (G. B. Sowerby, 1834)]
Ref. Bernard, 1983 p 63

pugetensis W. H. Dall, 1913
(3-2-3-1-3-3-0-13-3-29-0-0-0)
Giant Lyonsia, Puget Lyonsia
Size 1" long
Ref. Amer. Fish. Soc., 1988 p 47
Morris, 1966 p 46 bw
[=Lyonsia (Lyonsia) californica T. A. Conrad, 1837]
Ref. Abbott, 1974 p 555
[=Lyonsia (Lyonsia) bracteata (A. A. Gould, 1850)]
Ref. Bernard, 1983 p 63

saxicola W. Baird, 1863
(3-2-3-1-3-3-0-13-3-30-0-0-0)
[=Agriodesma saxicola (W. Baird, 1863)]
Ref. Baird, 1983 p 63

sibirica J. W. Leche, 1883
(3-2-3-1-3-3-0-13-3-31-0-0-0)
[=Lyonsia (Lyonsia) arenosa H. P. C. Moller, 1842]
Ref. Abbott, 1974 p 555

striata G. Montagu, 1815
(3-2-3-1-3-3-0-13-3-32-0-0-0)
Striate Lyonsia
Size 0.5" long
Ref. Amer. Fish. Soc., 1988 p 48
Morris, 1966 p 47 bw
Syn. Lyonsia (Lyonsia) coruscans A. Scacchi, 1833;
Lyonsia (Lyonsia) montagui T. Brown, 1845
Ref. Abbott, 1974 p 555

ventricosa A. A. Gould, 1861
(3-2-3-1-3-3-0-13-3-33-0-0-0)
[=Lyonsia (Lyonsia) arenosa (H. P. C. Moller, 1842)]
Ref. Bernard, 1983 p 63
Wagner, 1984 p 73