Subgenus (Thracia) W. E. Leach in H. M. D. de Blainville, 1824

(3-2-3-1-3-8-0-19-7-0-0-0-0)

adamsi N. MacGinitie, 1959
(3-2-3-1-3-8-0-19-7-1-0-0-0)
Adams Thracia
Ref. Amer. Fish. Soc., 1988 p 48

anconensis A. A. Olsson, 1961
(3-2-3-1-3-8-0-19-7-2-0-0-0)
Size 1.5" long
Ref. Keen, 1971 p 295 bw

beringi W. H. Dall, 1915
(3-2-3-1-3-8-0-19-7-3-0-0-0)
Bering Thracia
Ref. Abbott, 1974 p 559
Amer. Fish. Soc., 1988 p 48

carnea O. A. L. Morch, 1861
(3-2-3-1-3-8-0-19-7-4-0-0-0)
[=Macoma (Psammacoma) siliqua (C. B. Adams, 1852)]
Ref. Bernard, 1983 p 45

challisiana W. H. Dall, 1915

(3-2-3-1-3-8-0-19-7-5-0-0-0)
Challis Thracia
Ref. Abbott, 1974 p 559
Amer. Fish. Soc., 1988 p 48

colpoica W. H. Dall, 1915
(3-2-3-1-3-8-0-19-7-6-0-0-0)
Size 0.75" long
Ref. Keen, 1971 p 295 bw

conradi J. P. Couthouy, 1838
(3-2-3-1-3-8-0-19-7-7-0-0-0)
Conrad Thracia, Conrad's Thracia
Size 3"-4" long
Ref. Abbott, 1974 p 558 bw
Abbott & Dance, 1982 p 374 c
Amer. Fish. Soc., 1988 p 48
Morris, 1973 p 100 bw

corbuloidea H. M. D. de Blainville, 1824
(3-2-3-1-3-8-0-19-7-8-0-0-0)
Corbula Thracia, Corbuloid Thracia
Size 2"
Ref. Abbott & Dance, 1982 p 374 c
Amer. Fish. Soc., 1988 p 48
Syn. [?=Thracia morrisoni R. E. Petit, 1964]
Thracia philippiana F. Nordsieck, 1969
Ref. Abbott, 1974 p 559

curta T. A. Conrad, 1837
(3-2-3-1-3-8-0-19-7-9-0-0-0)
Short Thracia, Short Western Thracia
Size 1"-1.5" long
Ref. Abbott, 1974 p 559 bw
Amer. Fish. Soc., 1988 p 48
Keen, 1971 p 295 bw

devexa G. O. Sars, 11878
(3-2-3-1-3-8-0-19-7-10-0-0-0)
Sloping Thracia
Ref. Amer. Fish. Soc., 1988 p 48

diegensis W. H. Dall, 1915
(3-2-3-1-3-8-0-19-7-11-0-0-0)
[=Asthenothaerus villosior P. P. Carpenter, 1864]
Ref. Keen, 1971 p 297

distorta G. Montagu, 1808
(3-2-3-1-3-8-0-19-7-12-0-0-0)
Distorted Thracia
Ref. Abbott, 1974 p 559
Amer. Fish. Soc., 1988 p 48

morrisoni R. E. Petit, 1964
(3-2-3-1-3-8-0-19-7-13-0-0-0)
Morrison Thracia, Morrison's Thracia
Size 0.75-1"
Ref. Amer. Fish. Soc., 1988 p 48
Syn. ? Thracia corbuloidea H. M. D. de Blainville, 1824
Ref. Abbott, 1974 p 559

myopsis H. P. C. Moller, 1842
(3-2-3-1-3-8-0-19-7-14-0-0-0)
Arctic Thracia
Ref. Abbott, 1974 p 559 d
Amer. Fish. Soc., 1988 p 48

nitida A. E. Verrill, 1884
(3-2-3-1-3-8-0-19-7-15-0-0-0)
Shining Thracia
Size 1" long
Ref. Abbott, 1974 p 559 bw
Morris, 1973 p 100 bw

phaseolina J. B. P. A. de Lamarck, 1822
(3-2-3-1-3-8-0-19-7-16-0-0-0)
Kidneybean Thracia
Ref. Abbott, 1974 p 559
Amer. Fish. Soc., 1988 p 48

philippiana F. Nordsieck, 1969
(3-2-3-1-3-8-0-19-7-17-0-0-0)
[=Thracia corbuloidea H. M. D. de Blainville, 1824]
Ref. Abbott, 1974 p 559

pubescens (R. Pulteney, 1799) [T]
(3-2-3-1-3-8-0-19-7-18-0-0-0)
Pubescent Thracia
Size 2.3" long
Ref. Abbott, 1974 p 558
Abbott & Dance, 1982 p 374 c

rugosa J. B. P. A. de Lamarck, 1818
(3-2-3-1-3-8-0-19-7-19-0-0-0)
Rugose Thracia
Ref. Abbott, 1974 p 559
Amer. Fish. Soc., 1988 p 48

septentrionalis J. G. Jeffreys, 1872
(3-2-3-1-3-8-0-19-7-20-0-0-0)
Northern Thracia
Size 0.75"-1" long
Ref. Amer. Fish. Soc., 1988 p 48
Morris, 1973 p 100 bw
Syn. Thracia truncata J. W. Mighels & Adams, 1842, not T. Brown, 1827
Ref. Abbott, 1974 p 559

squamosa P. P. Carpenter, 1856
(3-2-3-1-3-8-0-19-7-21-0-0-0)
Size 1.25" long
Ref. Keen, 1971 p 295 bw

stimpsoni W. H. Dall, 1886
(3-2-3-1-3-8-0-19-7-22-0-0-0)
Stimpson Thracia
Ref. Abbott, 1974 p 559 d
Amer. Fish. Soc., 1988 p 48

trapezoides T. A. Conrad, 1849
(3-2-3-1-3-8-0-19-7-23-0-0-0)
Common Pacific Thracia, Pacific Thracia, Trapezoid Thracia
Size 2" long
Ref. Abbott, 1974 p 558 bw
Amer. Fish. Soc., 1988 p 48
Morris, 1966 p 49 bw

truncata J. W. Mighels & Adams, 1842 [not T. Brown, 1827]
(3-2-3-1-3-8-0-19-7-24-0-0-0)
[=Thracia septentrionalis J. G. Jeffreys, 1872]
Ref. Abbott, 1974 p 559