Genus Cymatoica W. H. Dall, 1889+[1890]

(3-4-4-0-24-14-1-8-0-0-0-0-0)
Ref. Abbott, 1974 p 508
Amer. Fish. Soc., 1988 p 40
Bernard, 1983 p 44
Vaught, 1989 p 132
Vokes, 1980 p 145
[see also as Subgenus under Genus Macoma]
Ref. Keen, 1971 p 227

occidentalis W. H. Dall, 1890
(3-4-4-0-24-14-1-8-0-1-0-0-0)
[=Cymatoica undulata (S. C. T. Hanley, 1844)]
Ref. Abbott, 1974 p 508
[=Macoma (Cymatoica) undulata (S. C. T. Hanley, 1844)]
Ref. Keen, 1971 p 227

orientalis (W. H. Dall, 1890)
(3-4-4-0-24-14-1-8-0-2-0-0-0)
Western Tellin
Ref. Abbott, 1974 p 509 d
Amer. Fish. Soc., 1988 p 40

hendersoni H. A. Rehder, 1939
(3-4-4-0-24-14-1-8-0-2-0-1-0)
[may be a form]
Ref. Abbott, 1974 p 508 bw

orientalis (W. H. Dall, 1890)
(3-4-4-0-24-14-1-8-0-2-0-2-0)

undulata (S. C. T. Hanley, 1844) [T]
(3-4-4-0-24-14-1-8-0-3-0-0-0)
Syn. Cymatoica occidentalis W. H. Dall, 1890
Ref. Abbott, 1974 p 508 d
Syn. Tellina (Tellina) undulata S. C. T. Hanley, 1844
Ref. Bernard, 1983 p 44