Subgenus (Brachidontes) W. Swainson, 1840

(3-7-5-0-1-2-4-5-3-0-0-0-0)
Ref. Abbott, 1974 p 429

adamsianus (W. Dunker, 1857)
(3-7-5-0-1-2-4-5-3-1-0-0-0)
Adams Mussel, Stearns' Mussel
Ref. Amer. Fish. Soc., 1988 p 23
Syn. Mytilus (Mytilus) adamsianus W. Dunker, 1857;
Mytilus (Mytilus) cubitus authors, not T. Say, 1822;
Mytilus (Mytilus) puntarensis authors, not H. A. Pilsbry & H. N. Lowe, 1932;
Mytilus (Mytilus) stearnsii H. A. Pilsbry & W. J. Raymond, 1898
Ref. Bernard, 1983 p 18
Syn. Mytilus (Mytilus) stearnsi H. A. Pilsbry & W. J. Raymond, 1898
Ref. Keen, 1971 p 61 bw

blakeanus J. C. Melvill & R. Standen, 1914
(3-7-5-0-1-2-4-5-3-2-0-0-0)
Ref. Bernard, 1983 p 18

citrinus (P. F. Roding, 1798)
(3-7-5-0-1-2-4-5-3-3-0-0-0)
[=Brachidontes (Brachidontes) modiolus (C. v. Linne, 1767)]
Ref. Abbott, 1974 p 429

cubitus (T. Say, 1822)
(3-7-5-0-1-2-4-5-3-4-0-0-0)
[=Brachidontes (Brachidontes) modiolus (C. v. Linne, 1767)]
Ref. Abbott, 1974 p 429

granulatus (S. C. T. Hanley, 1843)
(3-7-5-0-1-2-4-5-3-5-0-0-0)
Syn. Mytilus (Mytilus) granulatus S. C. T. Hanley, 1843;
Mytilus (Mytilus) pilosus L. A. Reeve, 1858
Ref. Bernard, 1983 p 18

modiolus (C. v. Linne, 1767) [T]
(3-7-5-0-1-2-4-5-3-6-0-0-0)
Yellow Mussel
Ref. Amer. Fish. Soc., 1988 p 23
Syn. Brachidontes (Brachidontes) citrinus (P. F. Roding, 1798);
Brachidontes (Brachidontes) cubitus (T. Say, 1822)
Ref. Abbott, 1974 p 429 bw c

multiformis P. P. Carpenter, 1857 [(1855)]
(3-7-5-0-1-2-4-5-3-7-0-0-0)
Ref. Abbott, 1974 p 430

houstonius P. Bartsch & H. A. Rehder, 1939
(3-7-5-0-1-2-4-5-3-7-1-0-0)
[=Brachidontes (Brachidontes) puntarenensis (H. A. Pilsbry & H. N. Lowe, 1932)]
Ref. Bernard, 1983 p 18
Keen, 1971 p 61

playasensis (H. A. Pilsbry & A. A. Olsson, 1935)
(3-7-5-0-1-2-4-5-3-8-0-0-0)
Syn. Modiolus (Brachydontes) playasensis H. A. Pilsbry & A. A. Olsson, 1935;
Scolimytilus (Scolimytilus) esmeraldensis A. A. Olsson, 1961
Ref. Bernard, 1983 p 18
Syn. Scolimytilus (Scolimytilus) esmeraldensis A. A. Olsson, 1961
Ref. Keen, 1971 p 61 bw

puntarenensis (H. A. Pilsbry & H. N. Lowe, 1932)
(3-7-5-0-1-2-4-5-3-9-0-0-0)
Syn. Brachidontes (Brachidontes) multiformis houstonius P. Bartsch & H. A. Rehder, 1939;
Mytilus (Hormomya) puntarenensis H. A. Pilsbry & H. N. Lowe, 1932
Ref. Bernard, 1983 p 18
Syn. Brachidontes (Brachidontes) multiformis houstonius P. Bartsch & H. A. Rehder, 1939
Ref. Keen, 1971 p 61 bw d

purpuratus [purpurata] (J. B. P. A. de Lamarck, 1819)
(3-7-5-0-1-2-4-5-3-10-0-0-0)
Syn. Modiola purpurata J. B. P. A. de Lamarck, 1819;
Mytilus (Mytilus) bifurcatus P. Dautzenberg, 1896, not T. A. Conrad, 1837;
? Mytilus (Mytilus) exaratus R. A. Philippi, 1847;
Mytilus (Mytilus) exilis R. A. Philippi, 1847
Ref. Bernard, 1983 p 18

semilaevis (K. T. Menke, 1848)
(3-7-5-0-1-2-4-5-3-11-0-0-0)
Syn. Modiola semilaevis K. T. Menke, 1848;
Mytilus (Mytilus) multiformis P. P. Carpenter, 1857;
Scolimytilus (Scolimytilus) aequatorialis A. A. Olsson, 1961
Ref. Bernard, 1983 p 18
Syn. Mytilus (Mytilus) multiformis P. P. Carpenter, 1857;
Scolimytilus (Scolimytilus) aequatorialis A. A. Olsson, 1961
Ref. Keen, 1971 p 61 bw d

stearnsi H. A. Pilsbry & W. J. Raymond, 1898
(3-7-5-0-1-2-4-5-3-12-0-0-0)
[=Brachidontes (Aeidimytilus) adamsianus (W. Dunker, 1857)]
Ref. Abbott, 1974 p 430