Genus Diplothyra G. W. Tryon, 1862

(3-4-3-2-1-1-2-6-0-0-0-0-0)
Ref. Abbott, 1974 p 547
Amer. Fish. Soc., 1988 p 46
Bernard, 1983 p 60
Keen, 1971 p 278
Syn. Schroeteria G. W. Tryon, 1862
Ref. Vaught, 1989 p 138

curta (G. B. Sowerby, 1834)
(3-4-3-2-1-1-2-6-0-1-0-0-0)
Ref. Abbott, 1974 p 547
Keen, 1971 p 278 d
Syn. Pholas (Pholas) curta G. B. Sowerby, 1834
Ref. Bernard, 1983 p 60

smithii G. W. Tryon, 1862 [T]
(3-4-3-2-1-1-2-6-0-2-0-0-0)
Oyster Piddock, Smith's Martesia
Ref. Abbott, 1974 p 547
Amer. Fish. Soc., 1988 p 46