Genus Zirfaea J. E. Gray, 1840[1842] [ex W. E. Leach, ms, 1842]

(3-4-3-2-1-1-3-43-0-0-0-0-0)
Ref. Amer. Fish. Soc., 1988 p 47
Bernard, 1983 p 60
Lindner, 1977 p 117
Syn. Thurlosia W. E. Leach in Catlow & L. A. Reeve, 1845;
Zirfaea, authors; Zirphaea authors;
Zyrphaea authors
Ref. Vaught, 1989 p 138
Syn. Thurlosia ex W. E. Leach, ms, Catlow & L. A. Reeve, 1845;
Zirphaea ex W. E. Leach, ms, J. E. Gray, 1852;
Zyrphaea S. Clessin, 1891
Ref. Abbott, 1974 p 544
Vokes, 1980 p 188

crispata (C. v Linne, 1758) [T]
(3-4-3-2-1-1-3-43-0-1-0-0-0)
Great Piddock, Oval Piddock
Ref. Abbott, 1974 p 544 bw
Amer. Fish. Soc., 1988 p 47
Lindner, 1977 pl 63 c
Syn. Mya crispata C. v Linne, 1758
Ref. Bernard, 1983 p 60

dentata authors [not W. M. Gabb, 1866]
(3-4-3-2-1-1-3-43-0-2-0-0-0)
[=Zirfaea pilsbryii H. N. Lowe, 1931]
Ref. Bernard, 1983 p 60

gabbi authors [not G. W. Tryon, 1863]
(3-4-3-2-1-1-3-43-0-3-0-0-0)
[=Zirfaea pilsbryii H. N. Lowe, 1931]
Ref. Bernard, 1983 p 60

pilsbryi authors [not H. N. Lowe, 1931]
(3-4-3-2-1-1-3-43-0-4-0-0-0)
[=Barnea (Anchomasa) subtruncata (G. B. Sowerby, 1834)]
Ref. Bernard, 1983 p 60

pilsbryi [pilsbryii] H. N. Lowe, 1931
(3-4-3-2-1-1-3-43-0-5-0-0-0)
Pacific Rough Piddock, Pilsbry Piddock
Ref. Abbott, 1974 p 544 bw
Amer. Fish. Soc., 1988 p 47
Syn. ? Pholas (Pholas) constricta G. B. Sowerby, 1849 [not R. A. Philippi, 1829 or Romer, 1851];
Pholas (Pholas) crispata authors [not C. v Linne, 1758];
Zirfaea dentata authors [not W. M. Gabb, 1866];
Zirfaea gabbi authors [not G. W. Tryon, 1863]
Ref. Bernard, 1983 p 60